[Federal Register Volume 63, Number 108 (Friday, June 5, 1998)]
[Rules and Regulations]
[Pages 31014-31096]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-14581]



[[Page 31013]]

_______________________________________________________________________

Part III





Environmental Protection Agency





_______________________________________________________________________



40 CFR Part 81



Identification of Ozone Areas Attaining the 1-Hour Standard and to 
Which the     1-Hour Standard Is No Longer Applicable; Final Rule

Federal Register / Vol. 63, No. 108 / Friday, June 5, 1998 / Rules 
and Regulations

[[Page 31014]]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 81

[FRL-6105-6]


Identification of Ozone Areas Attaining the 1-Hour Standard and 
to Which the 1-Hour Standard Is No Longer Applicable

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: On January 16, 1998, the EPA published a direct final rule to 
identify ozone areas where the 1-hour standard is no longer applicable. 
The 60-day comment period concluded on March 17, 1998. A total of ten 
adverse comment letters were received in response to this direct final 
rule. Therefore, on March 16, 1998, the Agency published a withdrawal 
of the direct final rule, thus converting the direct final rule to a 
proposal. Independent of the comments received, the EPA identified 
typographical errors of certain areas listed in its regulations on 
designation of areas for air quality planning purposes. This final rule 
summarizes all of the comments and EPA's responses, corrects the 
typographical errors of certain areas, and finalizes the determination 
that the 1-hour standard no longer applies for specific areas 
identified in this final action.

EFFECTIVE DATE: This action will be effective June 5, 1998.

ADDRESSES: Copies of the public comments and EPA's responses are 
available for inspection at the following address: Air and Radiation 
Docket and Information Center (6101), Attention: Docket No. A-97-42, 
U.S. Environmental Protection Agency, 401 M Street SW, Room M-1500, 
Washington, DC 20460, telephone (202) 260-7548, between 8:00 a.m. and 
4:00 p.m., Monday through Friday, excluding legal holidays.

FOR FURTHER INFORMATION CONTACT: Annie Nikbakht (policy) or Barry 
Gilbert (air quality data), Office of Air Quality Planning and 
Standards, Air Quality Strategies and Standards Division, Ozone Policy 
and Strategies Group, MD-15, Research Triangle Park, NC 27711, 
telephone (919) 541-5246/5238. In addition, the following Regional 
contacts may be called for individual information regarding monitoring 
data and policy matters specific for each Regional Office's geographic 
area:

    Region I--Richard P. Burkhart, (617) 565-3578
    Region II--Ray Werner, (212) 637-3706
    Region III--Marcia Spink, (215) 566-2104
    Region IV--Kay Prince, (404) 562-9026
    Region V--Todd Nettesheim, (312) 353-9153
    Region VI--Lt. Mick Cote, (214) 665-7219
    Region VII--Royan Teter, (913) 551-7609
    Region VIII--Tim Russ, (303) 312-6479
    Region IX--Morris Goldberg, (415) 744-1296
    Region X--William Puckett, (206) 553-1702.

SUPPLEMENTARY INFORMATION:

Table of Contents

I. Public Comments and EPA Responses
II. Discovered Errors in 40 CFR Part 81 Ozone Table
III. Final Rulemaking Action
IV. Other Regulatory Requirements

I. Public Comments and EPA Responses

    The following discussion summarizes and responds to the comments 
received on the direct final rule published on January 16, 1998 (63 FR 
2726), which was withdrawn due to adverse comments by a document 
published on March 16, 1998 (63 FR 12652), thus converting the direct 
final rule to a proposal (63 FR 2804, January 16, 1998).
    General Comment: The commenter voiced four major concerns: (1) the 
rule contradicts the requirements of the Clean Air Act (Act), (2) the 
rule uses an arbitrary and inconsistent methodology to determine where 
the 1-hour standard should be determined not to apply, (3) the rule 
discriminates against downwind areas affected by transported ozone and 
nitrogen oxides (NO<INF>X</INF>), and (4) the rule imposes uncertain 
and unfair burdens on small entities and others in southwestern 
Pennsylvania. The EPA should revoke the 1-hour standard everywhere, for 
the entire country.
    Comment: The Act does not give EPA the authority to establish 
different standards for different areas of the country, nor does it 
give EPA the authority to selectively revoke previously established 
standards in some areas of the country but not others.
    Response: The procedure for determining that the ozone national 
ambient air quality standards (NAAQS) no longer applies was established 
in the NAAQS rulemaking promulgated in July 1997. Since the rule for 
the new ozone NAAQS has been promulgated, effective September 16, 1997, 
(62 FR 38856, July 18, 1997), it is too late to raise issues in this 
rulemaking concerning the continued applicability of the 1-hour ozone 
standard to areas not attaining that standard.
    Comment: Although southwestern Pennsylvania attained the 1-hour 
standard for 6 straight years from 1989 through 1994, EPA refused to 
redesignate the region because of a dispute with the Commonwealth of 
Pennsylvania over whether the other requirements for redesignation had 
been met. When the Growth Alliance challenged EPA's illegal delay in 
acting on Pennsylvania's request to redesignate the region and its 
inappropriate consideration of 1995 emission data, EPA asserted that it 
would refuse to redesignate the region regardless of the decision about 
the appropriate air quality data to use because of the other 
requirements for redesignation. By revoking the standard in areas that 
may not have met the requirements for redesignation, EPA is now 
attempting to circumvent the same requirements of the Act that it has 
previously been so adamant to enforce in southwestern Pennsylvania.
    Response: On May 1, 1996, EPA disapproved the Commonwealth of 
Pennsylvania's request that EPA redesignate the Pittsburgh 
nonattainment area to attainment for ozone because the area violated 
the 1-hour ozone NAAQS and did not meet other Act requirements for 
redesignation (61 FR 19193). This decision was challenged. In an 
opinion filed on July 28, 1997, the U.S. Court of Appeals for the Third 
Circuit denied the Southwestern Pennsylvania Growth Alliance's petition 
for review and upheld EPA's decisions to disapprove Pennsylvania's 
redesignation request for the Pittsburgh area. Furthermore, the 
Pittsburgh area was not in attainment for 6 straight years. Compliance 
with the ozone NAAQS is determined using 3 consecutive years of data to 
account for year-to-year variations in emissions and meteorological 
conditions. The area first had air quality data that met the NAAQS in 
1992, considering the years 1990-1992, and continued to meet the 
standard in 1993 and 1994. Then, in 1995, the area once again violated 
the NAAQS. The area continues to be out of compliance with the 1-hour 
ozone NAAQS.
    As this action is not a redesignation, but rather a determination 
that the 1-hour NAAQS no longer applies to certain areas, pursuant to 
the regulations promulgated in July 1997 as part of the rulemaking 
regarding the ozone NAAQS, the redesignation requirements of section 
107(d)(3)(E) do not apply to this action. This action is

[[Page 31015]]

not an attempt to circumvent the requirements of redesignation, but 
instead simply follows the regulations previously adopted by EPA.
    Comment: There is a pending suit which challenges EPA's ability to 
redesignate upwind areas to attainment when their States have not 
complied with the requirements of section 110(a)(2)(D) of the Act, 
which requires that every State impose emission controls sufficient to 
prevent negative impacts on downwind areas. By revoking the 1-hour 
standard in areas that have attained it, but not requiring that the 
other requirements for redesignation be met, EPA appears to be 
attempting to escape a potentially adverse ruling.
    Response: The Agency views the process of determining where the 1-
hour standard no longer applies as not being subject to the 
requirements for redesignation. The regulations adopted by EPA that 
govern this process set forth only one criterion--attainment of the 1-
hour standard. Section 110(a)(2)(D) continues to apply to upwind States 
regardless of the applicability of the 1-hour standard to areas in 
those States. Therefore, a determination that the 1-hour standard does 
not apply in an upwind State has no bearing on the obligation of such a 
State to satisfy the requirements of section 110(a)(2)(D) as to any 
significant contribution from sources in that State to a downwind area 
that is not attaining the 1-hour NAAQS. This action is not an attempt 
to avoid any potentially adverse court ruling but is simply the 
carrying out of the regulations promulgated in July 1997.
    Comment: This method arbitrarily selects the 1994-1996 period of 
time to determine where the 1-hour standard will be revoked; an area 
that happens to experience meteorological conditions that were 
favorable for ozone during 1996 or early 1997 would be doomed to remain 
subject to the 1-hour standard, while an area that experienced the same 
meteorological conditions a year later would not. This arbitrariness is 
particularly unfair because a violation can occur at a particular time, 
not because of an inappropriate level of emissions, but because of 
variations in weather and temperature.
    Response: The 1994-1996 period was chosen because it was the most 
recent 3-year period that existed at the time of this rule for which 
EPA and the States had complete data. Attainment of the ozone NAAQS is 
determined using 3 consecutive years of data to account for variations 
in meteorological conditions, as well as variations in volatile organic 
compounds (VOC) and NO<INF>X</INF> emissions. The Ozone NAAQS is 
designed to take into account such variations. Since EPA cannot control 
the weather, it must control levels of ozone in the breathable air by 
controlling the concentration of NO<INF>X</INF> and VOC in the air. 
EPA's goal is to ensure that everyone is breathing healthy air, 
regardless of the weather. Later periods will be used in future 
actions. For instance, on May 18, 1998, the Agency proposed that the 1-
hour standard would no longer apply in 6 additional ozone areas based 
upon 1995-1997 air quality data (63 FR 27247).
    Comment: The EPA is removing the standard in some areas, not 
because there are no violations of the ozone standard, but because 
there are no ozone monitors to measure ozone. This discriminates 
against areas that have more ozone monitors.
    Response: The Agency has in place procedures to review all past 
monitoring and sources that contribute to violations, thus enabling the 
Agency to locate monitors in areas that are likely to violate. The EPA 
believes that the monitoring network in place for the 1-hour ozone 
standard adequately represents the Nation's air quality. Using past air 
quality monitoring and modeling data, EPA has located monitors in areas 
where violations of the 1-hour standard are likely to occur and has not 
located monitors in areas where the likelihood of violation is low. The 
design of the ozone network can be found in 40 CFR part 58.
    Comment: The EPA is proposing to revoke the 1-hour standard in 
upwind areas, while leaving it in place in downwind areas, despite the 
fact that it has been proven to be impossible for downwind areas to 
attain the 1-hour standard without additional emission controls in 
upwind areas. The EPA has failed to enforce section 110(a)(2)(D) which 
requires that every State impose emission controls sufficient to 
prevent negative impacts on downwind areas.
    Response: The EPA is addressing this issue in the Eastern United 
States through the NO<INF>X</INF> State implementation call (SIP) call, 
which EPA has proposed (62 FR 60318, November 7, 1997). The proposal 
would place uniform controls for NO<INF>X</INF> emissions in large 
geographic upwind areas that contain both attainment and nonattainment 
areas. The controls would reduce NO<INF>X</INF> emissions and, as a 
result, ozone levels. The EPA has also been petitioned, under section 
126(b) of the Act, to place controls on upwind stationary sources of 
NO<INF>X</INF> emissions. More generally, it should be noted that 
upwind sources are subject to section 110(a)(2)(D) regardless of 
whether the 1-hour standard continues to apply to them. Accordingly, a 
determination that the 1-hour standard does not apply to upwind areas 
does not preclude additional reductions in the upwind areas.
    Comment: The NO<INF>X</INF> SIP call will not be in effect until, 
at the earliest, 2002; southwestern Pennsylvania will continue to 
suffer from the effects of transported pollution for at least 5 
additional years. As a result, under the methodology that EPA has 
proposed, it is unlikely that the 1-hour standard could be revoked for 
southwestern Pennsylvania or other areas of the country that are 
affected by transport until well into the 21st century.
    Response: The Agency acknowledges that some areas will remain in 
nonattainment and subject to the 1-hour standard. Under the Act, areas 
are designated nonattainment as long as their air quality fails to meet 
the NAAQS, even if they are the victims of transport from upwind areas 
that may be designated attainment. The EPA is continuing this approach 
even when the 1-hour standard ceases to apply for areas that are 
attaining, but EPA is not thereby creating any inequities.
    Comment: Photochemical modeling conducted for southwestern 
Pennsylvania and approved by EPA demonstrated that even if all manmade 
emissions in southwestern Pennsylvania were eliminated the Pittsburgh 
area would still experience exceedances of the 1-hour standard.
    Response: The EPA has completed a preliminary review of the 
submitted modeling but has not issued any formal approval or 
disapproval. The modeling for Pittsburgh suggests that the area's air 
quality is affected by transport, but that manmade emissions from the 
Pittsburgh area also contribute to the area's nonattainment problem.
    Comment: The continuation of the standard in southwestern 
Pennsylvania means that this region will be bumped up to a serious 
nonattainment designation and be subject to additional controls during 
1998.
    Response: According to section 181(b)(2), if a nonattainment area 
fails to meet it attainment date, then the nonattainment area is 
subject to bump-up to the next higher classification. The Agency is 
considering administrative mechanisms to soften the regulatory burden 
that may be imposed on areas affected by overwhelming transport.
    Comment: It is impossible to determine exactly how the rule will 
affect any area or entity because EPA has not stated what the 
implications of the rule will be. In other words, even EPA does not yet 
know what the implications of its rule are, so it is impossible for it 
to certify that the rule

[[Page 31016]]

will not have a significant impact on a substantial number of small 
entities.
    Response: The Regulatory Flexibility Act (RFA), 5 U.S.C. 601(a), 
provides that whenever an agency is required to publish a general 
notice of rulemaking, it must prepare and make available a RFA. An RFA 
is required only for small entities that are directly regulated by the 
rule (see Mid-Tex Electric Cooperative, Inc. v. FERC, 773 F.2d 327 
(D.C. Cir. 1985)). Determining that the 1-hour standard ceases to apply 
does not subject any entities to additional requirements. Accordingly, 
the Administrator is justified in certifying that the rule will not 
have a significant economic impact on a substantial number of small 
entities.
    Comment: This new regulation will arbitrarily and inappropriately 
harm southwestern Pennsylvania by imposing a stricter ozone standard in 
our region than in any other community within 200 miles and by forcing 
southwestern Pennsylvania businesses to unnecessarily suffer higher 
regulatory costs than businesses in areas to our south and west. The 
rule will have potentially serious negative impacts on both air quality 
and economic development in our region.
    Response: The Agency acknowledges that some areas will remain in 
nonattainment and subject to the 1-hour standard regardless of the 
determination that the 1-hour standard ceases to apply elsewhere. Under 
the Act, areas are designated nonattainment as long as their air 
quality fails to meet the NAAQS. The goal of the Act, and the goal of 
EPA in implementing it, is to ensure that everyone is breathing healthy 
air. The Agency is examining administrative ways of reducing the 
regulatory burden that may be imposed on areas affected by overwhelming 
transport. It should also be noted that southwestern Pennsylvania would 
remain subject to controls under section 184 as part of the Ozone 
Transport Region (OTR) even if the 1-hour standard ceased to apply for 
the area.
    Comment: The commenter believes that the 1994-1996 data set used 
for purposes of revoking the 1-hour NAAQS is appropriate because the 
revisions to the NAAQS occurred in July 1997, and all moderate and 
lower classified areas should have recorded no violations for the 1994-
1996 timeframe. Thus, the commenter urges EPA not to revoke the 1-hour 
NAAQS based on a data set that includes 1997.
    Response: The EPA intends to determine that the 1-hour standard 
ceases to apply for areas that attain the 1-hour NAAQS on an annual 
basis in an effort to transition from the 1-hour standard to the new 8-
hour standard. Consequently, on May 18, 1998, EPA published a proposal 
to determine that the 1-hour NAAQS no longer applies to a number of 
areas based on complete, quality-assured air monitoring data for the 
timeframe 1995-1997 (63 FR 27247). Subsequently, such determinations 
will be based on the most recent 3 years of complete, quality-assured 
monitoring data, i.e., 1999 determinations will be based on 1996-1998 
monitoring data, etc. The commenters' rationale for limiting 
determinations to 1994-1996 monitoring data is unclear given the 
purpose of this and similar subsequent actions in transitioning to the 
new 8-hour ozone standard.
    Comment: The EPA has failed to consider data collected from earlier 
periods which is ``most recent'' for some areas. During 1991, data 
which were collected as part of the Lake Michigan Ozone Study support 
maintaining applicability of the 1-hour standard for several counties 
in Michigan, namely Benzie, Delta and Oceana. The commenter provides 
1991 data from these three counties: Benzie County--3 exceedances in 
1991; Delta County--2 exceedances in 1991; and Oceana County--4 
exceedances in 1991.
    Response: The EPA is making these determinations based on areas 
having air quality meeting the 1-hour standard. The 1994-96 average 
expected exceedance in Benzie County was 0.3 with 3 years of complete 
data. Therefore, Benzie County is clearly measuring attainment and for 
this reason, EPA is determining that the 1-hour standard no longer 
applies.
    Delta County had 2 exceedances in 1991 and no data at that monitor 
since. Since the monitor recorded less than 3.2 total number of 
estimated exceedances over a 3 year period, there is no violation. 
Furthermore, another monitor in the county had 2 years of data in 1992 
and 1993 with no exceedances. Therefore, the 1-hour standard no longer 
applies to Delta County.
    Oceana County had 4 exceedances of the 1-hour ozone standard in 
1991 and has collected no data since. This was a clear violation of the 
1-hour standard. In addition, the two monitors immediately to the south 
and north of Oceana County--Muskegon County and Mason County, 
respectively, currently monitor violations of the 1-hour standard. For 
these reasons, EPA believes that there is a strong likelihood that the 
air quality in Oceana County continues to violate the one-hour 
standard. Thus, the 1-hour standard will still apply in Oceana County.
    Comment: The commenter states that air quality data alone are 
insufficient to determine attainment since Congress mandated 
redesignation requirements in section 107(d)(3)(E) of the Act. It is 
imperative that areas designated nonattainment meet these requirements 
before revocation of the 1-hour NAAQS, including an attainment 
demonstration with fully implemented rules and section 110(k)(5) issues 
addressed.
    Response: The criteria used to redesignate areas from nonattainment 
to attainment mandated by Congress are in section 107(d)(3)(E) of the 
Act. The first criteria is to demonstrate attainment of the NAAQS. For 
ozone, ambient air quality data have been used exclusively to 
demonstrate actual attainment of the ozone standard to meet the first 
criteria for redesignation. The other redesignation requirements of 
section 107(d)(3)(E) are to ensure that the measures that contributed 
to attainment of the NAAQS remain in place, that a level of emissions 
is established that would ensure continued maintenance of the NAAQS, 
and that a contingency plan is in place in the event the NAAQS is 
violated in the future. A determination that the 1-hour standard no 
longer applies is intended, in part, to be a process to transition to 
the newly promulgated 8-hour ozone standard for which EPA will 
designate areas in 2000. Thus, requiring areas to satisfy the other 
redesignation requirements in light of a new standard is not practical 
since their purpose is to continue maintenance of the 1-hour standard.
    Comment: Any areas covered by EPA's NO<INF>X</INF> SIP call need to 
take action to mitigate interstate transport of ozone. Consequently, 
the commenter urges EPA to withdraw dropping the 1-hour NAAQS in these 
States. Furthermore, EPA should withdraw dropping the 1-hour NAAQS in 
States that have been shown to contribute to ozone transport such as 
Texas, Louisiana, and Arkansas.
    Response: The EPA believes it is not a question as to whether or 
not the 1-hour standard applies, but that areas significantly 
contributing to transport must take action to mitigate such effects. 
The EPA proposed to apply the NO<INF>X</INF> SIP call (62 FR 60318, 
November 7, 1997) to the appropriate States regardless of designations 
with respect to the 1-hour standard within these States. The SIP call 
is based on one of the general provisions of the Act, section 
110(a)(2)(D)(I), which requires that a SIP be designed so that 
emissions from a State do not contribute significantly to nonattainment 
or interfere with maintenance of any primary or secondary NAAQS. 
Therefore, whether or not to continue the 1-hour standard in these 
States will have no effect on the impact of the NO<INF>X</INF> SIP 
call. Determining

[[Page 31017]]

that the 1-hour NAAQS does not apply for a State subject to the 
proposed NO<INF>X</INF> SIP call has no effect on that State's 
responsibility to respond to the SIP call. The November 7, 1997, 
proposal indicates that the NO<INF>X</INF> reductions will reduce ozone 
transport and, consequently, contribute toward attainment of the 1- and 
8-hour standards. It should also be noted that in the proposed 
NO<INF>X</INF> SIP call, EPA proposed to determine that Louisiana, 
Arkansas and Texas do not contribute significantly to nonattainment or 
maintenance problems downwind.
    Comment: The commenter objects to the EPA's proposal to revoke the 
1-hour NAAQS in portions of the Consolidated Metropolitan Statistical 
Areas (CMSAs) of Evansville-Henderson, Indiana-Kentucky, Grand Rapids-
Muskegon-Holland, Michigan, and Longview, Texas. Since EPA has 
determined that the 1-hour NAAQS remains applicable in other portions 
of these CMSAs (Warrick, Indiana; Muskegon, Michigan; and Gregg, 
Texas), the NAAQS should remain applicable to the entire CMSA. The 
CMSAs are identified as follows: Posey, Warrick, Henderson and 
Vanderburgh Counties in the Evansville-Henderson, Indiana-Kentucky 
CMSA; Ottawa, Muskegon, Kent and Allegan Counties in the Grand Rapids-
Muskegon-Holland, Michigan CMSA; and Gregg, Harrison and Upshur County 
in the Longview, Texas CMSA.
    Response: The geographic boundaries of the area for which the 1-
hour standard no longer applies is based upon the established 
nonattainment/attainment area boundaries. Default CMSA boundaries are 
not mandatory for moderate and lower-classified areas for SIP planning 
purposes, but instead are discretionary and based upon many factors. 
With respect to the Evansville-Henderson, Indiana-Kentucky area, at the 
time of the 1991 designations, the EPA agreed with the State of Indiana 
to limit the nonattainment area to Vanderburgh County due to the lack 
of valid ambient monitoring data showing violations of the 1-hour 
standard.
    The EPA is not determining that the 1-hour standard no longer 
applies for the Grand Rapids-Muskegon-Holland area in today's action. 
Furthermore, when the current designations were promulgated in 1991, 
the EPA based them on the most recent MSA-CMSA information available 
from the Census Bureau at that time. As a result, the Grand Rapids 
area, Muskegon area and Allegan County (Holland) were designated as 
separate areas. More recent census information merges these three areas 
into one. However, EPA believes that it is neither appropriate nor 
necessary to change its treatment of these areas at this time. 
Nonattainment area boundaries may be redefined with designations based 
on the new 8-hour ozone NAAQS. Therefore, when Grand Rapids (Kent and 
Ottawa Counties), Muskegon County or Allegan County have air quality 
meeting the 1-hour ozone NAAQS, then they will qualify separately for a 
determination that the 1-hour standard no longer applies.
    The Tyler/Longview area presents a unique situation to the Agency. 
Although the Gregg County ozone monitor recorded a violation of the 
ozone standard in 1995, EPA did not take action to designate the area 
nonattainment. Instead, a Flexible Attainment Region Memorandum of 
Agreement (MOA) was developed for five counties in the Tyler/Longview 
area. This MOA requires that additional ozone control strategies be put 
in place to reduce ambient ozone levels. The only ozone monitor present 
in this region operates in Gregg County. Since the Tyler/Longview CMSA 
is considered to be in attainment with respect to the 1-hour ozone 
standard, the 1-hour ozone standard will only apply to the county with 
the monitored violation. However, even though Upshur, Harrison, Smith 
and Rusk Counties are no longer required to meet the 1-hour standard 
under this approach, these counties must continue to meet the ozone 
control strategy outlined in the MOA.
    Comment: The commenter is troubled by EPA's labeling of areas as 
attainment for the 1-hour standard where the 1-hour standard is still 
applicable. Instead, areas such as Grand Rapids-Muskegon-Holland and 
Detroit-Ann Arbor should be bumped-up to serious. LaPorte, Indiana 
should be included in the Chicago-Gary nonattainment area and 
designated severe-17.
    Response: Again, the purpose of today's notice is not to designate, 
reclassify or bump-up areas for the 1-hour standard but to transition 
into the new 8-hour NAAQS by determining the nonapplicability of the 1-
hour NAAQS in areas that have air quality meeting the 1-hour standard 
in recent years. The Detroit-Ann Arbor area (Livingston, Macomb, 
Monroe, Oakland, St. Clair, Washtenaw, and Wayne Counties) and the 
Grand Rapids area (Kent and Ottawa Counties) satisfied the section 
107(d)(3)(E) requirements and were redesignated to attainment by 
notices dated March 7, 1995 and June 21, 1996, respectively. One of the 
redesignation requirements is that the area demonstrate attainment of 
the 1-hour standard. Furthermore, as previously discussed, the Grand 
Rapids area consists of Kent and Ottawa Counties and does not include 
Muskegon and Allegan Counties. Moreover based on 1995-1997 data showing 
attainment of the 1-hour standard, EPA has proposed a determination 
that the 1-hour standard should no longer apply to the Grand Rapids and 
Detroit areas (63 FR 27247, May 18, 1998). Finally, LaPorte, Indiana, 
was not designated with the original 1991 designations since it did not 
have data showing a violation of the 1-hour standard and the area was 
and is not part of the Chicago CMSA.
    Comment: The commenters requested that eastern Kern County be 
included in the list of areas attaining the 1-hour ozone standard and 
to which the 1-hour standard is no longer applicable. They contend 
that, in 1991, EPA erroneously included eastern Kern County in the San 
Joaquin Valley serious nonattainment area when it should have been 
excluded as a rural portion of the Metropolitan Statistical Area (MSA); 
that eastern Kern County is now under the jurisdiction of the Kern 
County Air Pollution Control District while western Kern County and the 
rest of the San Joaquin Valley nonattainment area is under the 
jurisdiction of the San Joaquin Valley Unified Air Pollution Control 
District; and that ambient air quality monitoring data show that 
eastern Kern County meets the 1-hour ozone standard.
    Response: This comment involves two issues: a change to the 
nonattainment area boundary originally established in 1991, and a 
finding that eastern Kern County is not violating the 1-hour ozone 
standard. Both issues are outside the scope of this rulemaking.
    Furthermore, with respect to the question of whether or not eastern 
Kern County is violating the 1-hour ozone standard, there are 
monitoring data indicating that eastern Kern County is in fact 
violating the 1-hour ozone standard. In EPA's review of Aerometric 
Information Retrieval System data, we found that two exceedances of the 
1-hour standard were registered at the Tehachapi monitoring station 
which operated only during 1995. These exceedances indicate that 
eastern Kern County is in violation of the 1-hour standard. The 
California Air Resources Board, in a March 9, 1998 letter to the 
Department of the Navy, confirmed that these ``exceedances indicate 
that [eastern Kern County] has not demonstrated compliance with the 
one-hour ozone standard.''
    Comment: The commenters urged EPA to revise its proposal so that 
the 1-hour standard either is retained for the entire Nation or revoked 
in all designated attainment and maintenance

[[Page 31018]]

areas. They believe that EPA's proposal leads to unfair treatment of 
the San Francisco Bay Area, a maintenance area that is currently 
proposed for redesignation to nonattainment of the 1-hour ozone 
standard. They contend that the EPA incorrectly interpreted the 
President's ``Implementation Plan for Revised Air Quality Standards'' 
(Plan) with regard to identification of areas to which the 1-hour ozone 
standard will cease to apply. They believe that the President directed 
EPA to revoke the one-hour standard for all existing maintenance areas 
and nonattainment areas that have attained the standard, emphasizing 
that the revocation should apply, regardless of current air quality, if 
at some point in the past EPA determined the area to be attaining and 
redesignated the area to attainment. They interpret the Plan's 
requirement that areas be ``not violating'' or ``meeting'' the standard 
(in the present tense) as referring only to designated nonattainment 
areas.
    Response: The EPA is following the clear language of 40 CFR 
50.9(b), which provides that the 1-hour standard no longer applies 
``once EPA determines that the area has air quality meeting the 1-hour 
standard.'' This language clearly states that an area is to have air 
quality meeting the standard at the time of the determination. Second, 
EPA disagrees that the memorandum called for EPA to determine the 
nonapplicability of the 1-hour ozone standard for all areas currently 
designated as maintenance or attainment areas. The Memorandum clearly 
indicates that current air quality should be the basis of EPA's 
determination in all areas, not just designated nonattainment areas. 
The introductory paragraph of the section in the Memorandum labeled 
``Phase-out of 1-hour standard'' states that ``the 1-hour standard will 
continue to apply to areas not attaining it'' (62 FR 38424). The use of 
the term ``attaining'' refers to an area's air quality relative to the 
standard and not to an area's current designation under the Act section 
107. This is clarified later when the Memorandum states that ``for 
areas where the air quality does not currently attain the 1-hour 
standard, the 1-hour standard will continue in effect'' (62 FR 38424). 
The EPA's action to determine the nonapplicability of the 1-hour 
standard only in areas whose air quality shows that they are not 
currently violating the standard is consistent with the Memorandum and 
follows the language of 40 CFR 50.9(b), which EPA must do. Because the 
San Francisco Bay Area monitoring data show that the area is currently 
violating the 1-hour ozone standard, it is not eligible to be included 
in the list of areas to which the 1-hour standard no longer applies.
    Comment: Retention of the 1-hour standard in maintenance and 
attainment areas will not promote early attainment of the new 8-hour 
standard.
    Response: The Agency is retaining the 1-hour NAAQS for the San 
Francisco Bay Area, not because it may facilitate attainment of the 8-
hour NAAQS, but because the area is currently violating the 1-hour 
NAAQS. The Agency believes that progress toward meeting the 1-hour 
NAAQS will contribute to attainment of the 8-hour NAAQS prior to the 
due date of the SIP for the 8-hour NAAQS. The decision to retain the 1-
hour standard was explained when the Agency promulgated the ozone NAAQS 
on July 18, 1997 and issued guidance for implementing the 1-hour ozone 
and pre-existing particulate matter (PM-10) NAAQS on December 29, 1997.
    Comment: A number of commenters, contend that EPA does not have the 
legal authority to determine that the 1-hour ozone NAAQS no longer 
applies to an area without satisfying the requirements of section 
107(d)(3)(E) for redesignation to attainment, including the requirement 
of an approved maintenance plan under section 175A. The commenters 
further contend that even if EPA had the legal authority to remove the 
nonattainment designation of areas as it has proposed, its action would 
be unlawful since it is arbitrary and capricious, an abuse of 
discretion and is procedurally flawed.
    Response: The EPA's authority for this action is based on the 
regulatory provisions adopted when it promulgated the 8-hour ozone 
NAAQS in July 1997 (62 FR 38856 (July 18, 1997)). Those regulations, in 
40 CFR 50.9(b), provide that the ``1-hour standard set forth in this 
section will no longer apply to an area once EPA determines that the 
area has air quality meeting the 1-hour standard.'' Those regulations 
specify a single criterion for the revocation of the standard--the 
determination by EPA that an area has air quality meeting the 1-hour 
standard. The EPA believes that is the only criterion that may be 
applied in this rulemaking, and that it has been satisfied in the case 
of all the areas covered by this action. This view is made clear by the 
memorandum from President Clinton to the Administrator outlining a 
strategy for implementing the revised PM and ozone NAAQS that was 
published on the same day as the revised NAAQS (62 FR 38421 (July 18, 
1997)). That memorandum stated that ``to streamline the process and 
minimize the burden on existing nonattainment areas, the 1-hour 
standard will cease to apply to an area upon a determination by the EPA 
that an area has attained air quality that meets the 1-hour standard. 
In light of the implementation of the new 8-hour standard, which is 
more stringent than the existing 1-hour standard, States will not have 
to prepare maintenance plans for those areas that attain the 1-hour 
standard'' (62 FR 38424 (July 18, 1997)). Thus, it was abundantly clear 
when EPA promulgated the regulation, on which today's action is based, 
that it would not be requiring maintenance plans as a prerequisite to 
its determination that the 1-hour standard no longer applies. In 
essence, the commenters' complaint, properly viewed, is not with the 
action being taken at this time, but with the regulatory provision on 
which this action is based. That regulation was promulgated in July 
1997, however, and the commenters' attempt to raise these issues at 
this point is simply too late. Moreover, EPA is not bound to follow the 
provisions of section 107(d)(3)(E) when a NAAQS has been revised and 
the NAAQS on which a nonattainment designation was based has been 
replaced by a new NAAQS, whose implementation will supersede the 
implementation of the old NAAQS. As for the fact that certain areas 
will still be subject to conformity, while others will not, that is 
simply a consequence of the conformity provisions of the statute, which 
make it applicable only to areas that are designated nonattainment or 
that have maintenance plans approved under section 175A. Such a result 
is not arbitrary or capricious nor an abuse of discretion. Any areas 
that do violate the new ozone NAAQS will be designated nonattainment 
for that NAAQS and subjected to conformity requirements at that time.
    Similarly, the commenters' contention that this action is 
procedurally flawed because it does not conform to a proposed policy 
published in the Federal Register in December 1996 is erroneous. The 
rule finalized in this action is being taken pursuant to 40 CFR 
50.9(b), which was promulgated after the proposed policy referred to by 
the commenters was published. That proposed policy was not the proposal 
on which this final action is based, and the reason it is not being 
followed here was evident in the proposal that did underlie this 
action--the existence of 40 CFR 50.9(b).
    Comment: The commenters questioned the Agency's authority and the 
basis for retaining the 1-hour standard. They oppose the imposition of 
two ozone standards.

[[Page 31019]]

    Response: These issues were dealt with in the final promulgation of 
the ozone NAAQS (62 FR 38856) on July 18, 1997. Specifically, EPA 
discussed its basis for retaining the one-hour standard at (62 FR 
38885). Consequently, the commenters' attempt to raise these issues in 
this rulemaking, which simply carries out the provisions of 40 CFR 
50.9(b), is too late.
    Comment: The commenters question whether the Act provides EPA the 
authority to reclassify areas from ``nonattainment'' to ``not 
applicable'' when section 107(d)(1) of the Act only provides for 
designations of ``nonattainment,'' ``attainment,'' and 
``unclassifiable.''
    Response: The Agency is not altering designations, per se, rather 
the Agency is determining the nonapplicability of the 1-hour standard 
in areas attaining the 1-hour NAAQS and is applying the term ``Not 
Applicable'' to so indicate.

II. Discovered Errors in 40 CFR Part 81 Ozone Table

Alabama

    The EPA recognized that the county of ``Cherokee'' was 
inadvertently omitted from the January 16, 1998 document. Therefore, 
part 81 for ozone has been amended to reflect this correction.

Alaska

    The EPA recognized that the Boroughs of ``Denali'' and ``Lake and 
Peninsula'' were inadvertently omitted from the January 16, 1998 
document, under AQCR 9 and AQCR 10, respectively. Therefore, part 81 
for ozone has been amended to reflect these corrections.

California

    The EPA recognized that the county of ``Santa Clara'' was 
incorrectly spelled as ``San Clara'' in the January 16, 1998 document. 
In addition, the description for Sonoma County (part) was inadvertedly 
omitted and has been added. Therefore, part 81 for ozone has been 
amended to reflect these corrections.

Mississippi

    The EPA recognized that the county of ``De Soto'' was incorrectly 
spelled as ``DeSota'' in the January 16, 1998 document. Therefore, part 
81 for ozone has been amended to reflect this correction.

Puerto Rico

    The EPA recognized that four municipios in Puerto Rico listed in 
the January 16, 1998 document were incorrectly spelled. Specifically, 
``Caba Rojo Municipio'' should be corrected to read ``Cabo Rojo 
Municipio''; ``Coama Municipio'' should be corrected to read ``Coamo 
Municipio''; ``Comeria Municipio'' should be corrected to read 
``Comerio Municipio''; ``Trujilla Alto Municipio'' should be corrected 
to read ``Trujillo Alto Municipio.'' Therefore, part 81 for ozone has 
been amended to reflect these corrections.

South Carolina

    The EPA recognized that two of the South Carolina counties listed 
in the January 16, 1998 document were incorrectly spelled. 
Specifically, ``Manon County'' should be corrected to read ``Marion 
County'' and that ``Saloda County'' be corrected to read ``Saluda 
County.'' Therefore, part 81 for ozone has been amended to reflect 
these corrections.

III. Final Rulemaking Action

    The ozone tables codified in today's action are significantly 
different from the ozone tables now included in 40 CFR part 81. The 
current 40 CFR part 81 designation listings (revised as of November 6, 
1991) include, by State and NAAQS pollutant, a brief description of 
areas within the State and their respective designation. Today's action 
includes completely new tables for ozone which indicate areas where the 
1-hour standard no longer applies, as well as where the 1-hour standard 
remains in effect. Also, the ozone tables codified today include the 
corrections from the proposed rulemaking noted above in section II. 
Discovered Errors in 40 CFR part 81 Ozone Table.

IV. Other Regulatory Requirements

A. Executive Order 12866

    The Office of Management and Budget has exempted this regulatory 
action from Executive Order 12866 review.

B. Rule Effective Date

    The EPA finds that there is good cause for this action to become 
effective immediately upon publication because a delayed effective date 
is unnecessary due to the nature of this action, which is a 
determination that the 1-hour ozone standard no longer applies. The 
immediate effective date for this action is authorized under both 5 
U.S.C. 553 (d)(1), which provides that rulemaking actions may become 
effective less than 30 days after publication if the rule ``grants or 
recognizes an exemption or relieves a restriction'' and section 
553(d)(3), which allows an effective date less than 30 days after 
publication ``as otherwise provided by the agency for good cause found 
and published with the rule.''

C. Regulatory Flexibility Act

    Under the Regulatory Flexibility Act, 5 U.S.C. 601 et seq., EPA 
must prepare a regulatory flexibility analysis assessing the impact of 
any proposed or final rule on small entities (5 U.S.C. 603 and 604), 
unless EPA certifies that the rule will not have a significant impact 
on a substantial number of small entities. Small entities include small 
businesses, small not-for-profit enterprises, and government entities 
with jurisdiction over populations of less than 50,000. The EPA is 
certifying that this rule will not have a significant impact on a 
substantial number of small entities, because the determination that 
the 1-hour standard ceases to apply does not subject any entities to 
any additional requirements.

D. Unfunded Mandates

    Under section 202 of the Unfunded Mandates Reform Act of 1995 
(UMRA), EPA must prepare a budgetary impact statement to accompany any 
proposed or final rule that includes a Federal mandate that may result 
in estimated costs to State, local, or tribal governments in the 
aggregate; or to private sector, of $100 million or more. Under section 
205, EPA must select the most cost effective and least burdensome 
alternative that achieves the objectives of the rule and is consistent 
with statutory requirements. Section 203 requires EPA to establish a 
plan for informing and advising any small governments that may be 
significantly or uniquely impacted by the rule.
    The EPA has determined that today's approval action, as 
promulgated, would not include a Federal mandate that may result in 
estimated costs of $100 million or more to either State, local, or 
tribal governments in the aggregate or to the private sector. This 
Federal action imposes no new requirements. Accordingly, no additional 
costs to State, local, or tribal governments, or to the private sector, 
result from this action.

E. Submission to Congress and the General Accounting Office

    Under 5 U.S.C. 801(a)(1)(A), as added by the Small Business 
Regulatory enforcement Fairness Act of 1996, EPA submitted a report 
containing this rule and other required information to the U.S. Senate, 
the U.S. House of Representatives and the Comptroller General of the 
General Accounting Office prior to publication of the rule in today's 
Federal Register. This rule is not a ``major rule'' as defined by 5 
U.S.C. 804(2).

[[Page 31020]]

F. Petitions for Judicial Review

    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by August 4, 1998. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this rule for the purposes of judicial review nor does 
it extend the time within which a petition for judicial review may be 
filed, and shall not postpone the effectiveness of such rule or action. 
This action may not be challenged later in preceedings to enforce its 
requirements (see section 307(b)(2)).

G. Applicability of Executive Order (E.O.) 13045

    On April 21, 1997, the President signed an Executive Order (13045) 
entitled ``Protection of Children from Environmental Health Risks and 
Safety Risks.'' This is the primary directive to Federal agencies and 
departments that Federal health and safety standards now must include 
an evaluation of the health or safety effects of the planned regulation 
on children. For rules subject to the Executive Order, agencies are 
further required to issue an explanation as to why the planned 
regulation is preferable to other potentially effective and reasonable 
feasible alternatives considered by the Agency.
    This final rule is not subject to E.O. 13045, entitled ``Protection 
of Children from Environmental Health Risks and Safety Risks'' (62 FR 
19885, April 23, 1997), because this is not an economically significant 
regulatory action as defined by E.O. 12866, and it does not involve 
decisions on environmental health risks or safety risks that may 
disproportionately affect children.

List of Subjects in 40 CFR Part 81

    Environmental protection, Air pollution control, National parks, 
Wilderness areas.

    Dated: May 27, 1998.
Carol M. Browner,
Administrator.

    For the reasons set out in the preamble, title 40, chapter I of the 
Code of Federal Regulations is amended as follows:


PART 81--[AMENDED]

    1. The authority citation for part 81 continues to read as follows:

    Authority: 42 U.S.C. 7401, et seq.

    2. In Sec. 81.301, the table entitled ``Alabama-Ozone'' is revised 
to read as follows:


Sec. 81.301  Alabama.

* * * * *

                                                             Alabama-Ozone (1-hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       ype                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
Birmingham Area:                                                                                                                                        
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Marginal.                                
    Shelby County.......................     11/15/90  Nonattainment............................     11/15/90  Marginal.                                
Rest of State...........................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Autauga County                                                                                                                                      
    Baldwin County                                                                                                                                      
    Barbour County                                                                                                                                      
    Bibb County                                                                                                                                         
    Blount County                                                                                                                                       
    Bullock County                                                                                                                                      
    Butler County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Chambers County                                                                                                                                     
    Cherokee County                                                                                                                                     
    Chilton County                                                                                                                                      
    Choctaw County                                                                                                                                      
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Cleburne County                                                                                                                                     
    Coffee County                                                                                                                                       
    Colbert County                                                                                                                                      
    Conecuh County                                                                                                                                      
    Coosa County                                                                                                                                        
    Covington County                                                                                                                                    
    Crenshaw County                                                                                                                                     
    Cullman County                                                                                                                                      
    Dale County                                                                                                                                         
    Dallas County                                                                                                                                       
    De Kalb County                                                                                                                                      
    Elmore County                                                                                                                                       
    Escambia County                                                                                                                                     
    Etowah County                                                                                                                                       
    Fayette County                                                                                                                                      
    Franklin County                                                                                                                                     
    Geneva County                                                                                                                                       
    Greene County                                                                                                                                       

[[Page 31021]]

                                                                                                                                                        
    Hale County                                                                                                                                         
    Henry County                                                                                                                                        
    Houston County                                                                                                                                      
    Jackson County                                                                                                                                      
    Lamar County                                                                                                                                        
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Lee County                                                                                                                                          
    Limestone County                                                                                                                                    
    Lowndes County                                                                                                                                      
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marengo County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mobile County                                                                                                                                       
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Morgan County                                                                                                                                       
    Perry County                                                                                                                                        
    Pickens County                                                                                                                                      
    Pike County                                                                                                                                         
    Randolph County                                                                                                                                     
    Russell County                                                                                                                                      
    St. Clair County                                                                                                                                    
    Sumter County                                                                                                                                       
    Talladega County                                                                                                                                    
    Tallapoosa County                                                                                                                                   
    Tuscaloosa County                                                                                                                                   
    Walker County                                                                                                                                       
    Washington County                                                                                                                                   
    Wilcox County                                                                                                                                       
    Winston County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    3. In Sec. 81.302, the table entitled ``Alaska-Ozone'' is revised 
to read as follows:


Sec. 81.302  Alaska.

* * * * *

                                                             Alaska--Ozone (1-hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 08 Cook Inlet Intrastate...........  ...........  1 hr.std.N.A.\2\                                        .........................................
    Anchorage Election District           ...........  .........................................               .........................................
    Kenai Penninsula Election District    ...........  .........................................               .........................................
    Matanuska-Susitna Election District   ...........  .........................................               .........................................
    Seward Election District              ...........  .........................................               .........................................
AQCR 09 Northern Alaska Intrastate......  ...........  1 hr.std.N.A.\2\.........................               .........................................
    Barrow Election District              ...........  .........................................               .........................................
    Denali Borough                        ...........  .........................................               .........................................
    Fairbanks Election District           ...........  .........................................               .........................................
    Kobuk Election District               ...........  .........................................               .........................................
    Nome Election District                ...........  .........................................               .........................................
    North Slope Election District         ...........  .........................................               .........................................
    Northwest Arctic Borough              ...........  .........................................               .........................................
    Southeast Fairbanks Election          ...........  .........................................               .........................................
     District                                                                                                                                           
    Upper Yukon Election District         ...........  .........................................               .........................................
    Yukon-Koyukuk Election District       ...........  .........................................               .........................................
AQCR 10 South Central Alaska Intrastate.  ...........  1 hr.std.N.A.\2\.........................               .........................................
    Aleutian Islands Election District    ...........  .........................................               .........................................
    Aleutians East Borough                ...........  .........................................               .........................................
    Aleutians West Census                 ...........  .........................................               .........................................
    Bethel Election District              ...........  .........................................               .........................................
    Bristol Bay Borough Election          ...........  .........................................               .........................................
     District                                                                                                                                           

[[Page 31022]]

                                                                                                                                                        
    Bristol Bay Election District         ...........  .........................................               .........................................
    Cordova-McCarthy Election District    ...........  .........................................               .........................................
    Dillingham Election District          ...........  .........................................               .........................................
    Kodiak Island Election District       ...........  .........................................               .........................................
    Kuskokwim Election District           ...........  .........................................               .........................................
    Lake and Peninsula Borough            ...........  .........................................               .........................................
    Valdez-Cordova Election District      ...........  .........................................               .........................................
    Wade Hampton Election District        ...........  .........................................               .........................................
AQCR 11 Southeastern Alaska Intrastate..  ...........  1 hr.std.N.A.\2\.........................               .........................................
    Angoon Election District              ...........  .........................................               .........................................
    Haines Election District              ...........  .........................................               .........................................
    Juneau Election District              ...........  .........................................               .........................................
    Ketchikan Election District           ...........  .........................................               .........................................
    Outer Kethcikan Election District     ...........  .........................................               .........................................
    Prince Of Wales Election District     ...........  .........................................               .........................................
    Sitka Election District               ...........  .........................................               .........................................
    Skagway-Yakutat Election District     ...........  .........................................               .........................................
    Wrangell-Petersburg Election          ...........  .........................................               .........................................
     District                                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    4. In Section 81.303, the table entitled ``Arizona-Ozone'' is 
revised to read as follows:


Sec. 81.303  Arizona.

* * * * *

                                                             Arizona-Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                             Date <SUP>1                       Type                       Date <SUP>1                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Phoenix Area:                                                                                                                                           
    Maricopa County (part)..............     11/15/90  Nonattainment............................     12/08/97  Serious.                                 
    The Urban Planning Area of the                                                                             .........................................
     Maricopa Association of Governments                                                                                                                
     is bounded as follows:                                                                                                                             
        1. Commencing at a point which                                                                         .........................................
         is at the intersection of the                                                                                                                  
         eastern line of Range 7 East,                                                                                                                  
         Gila and Salt River Baseline                                                                                                                   
         and Meridian, and the southern                                                                                                                 
         line of Township 2 South, said                                                                                                                 
         point is the southeastern                                                                                                                      
         corner of the Maricopa                                                                                                                         
         Association of Governments                                                                                                                     
         Urban Planning Area, which is                                                                                                                  
         the point of beginning;                                                                                                                        
        2. thence, proceed northerly                                                                           .........................................
         along the eastern line of Range                                                                                                                
         7 East, which is the common                                                                                                                    
         boundary between Maricopa and                                                                                                                  
         Pinal Counties, as described in                                                                                                                
         Arizona Revised Statute Section                                                                                                                
         11-109, to a point where the                                                                                                                   
         eastern line of Range 7 East                                                                                                                   
         intersects the northern line of                                                                                                                
         Township 1 North, said point is                                                                                                                
         also the intersection of the                                                                                                                   
         Maricopa County Line and the                                                                                                                   
         Tonto National Forest Boundary,                                                                                                                
         as established by Executive                                                                                                                    
         Order 869 dated July 1, 1908,                                                                                                                  
         as amended and shown on the                                                                                                                    
         U.S. Forest Service 1969                                                                                                                       
         Planimetric Maps;                                                                                                                              
        3. thence, westerly along the                                                                          .........................................
         northern line of Township 1                                                                                                                    
         North to approximately the                                                                                                                     
         southwest corner of the                                                                                                                        
         southeast quarter of Section                                                                                                                   
         35, Township 2 North, Range 7                                                                                                                  
         East, said point being the                                                                                                                     
         boundary of the Tonto National                                                                                                                 
         Forest and Usery Mountain Semi-                                                                                                                
         Regional Park;                                                                                                                                 
        4. thence, northerly along the                                                                         .........................................
         Tonto National Forest Boundary,                                                                                                                
         which is generally the western                                                                                                                 
         line of the east half of                                                                                                                       
         Sections 26 and 35 of Township                                                                                                                 
         2 North, Range 7 East, to a                                                                                                                    
         point which is where the                                                                                                                       
         quarter section line intersects                                                                                                                
         with the northern line of                                                                                                                      
         Section 26, Township 2 North,                                                                                                                  
         Range 7 East, said point also                                                                                                                  
         being the northeast corner of                                                                                                                  
         the Usery Mountain Semi-                                                                                                                       
         Regional Park;                                                                                                                                 

[[Page 31023]]

                                                                                                                                                        
        5. thence, westerly along the                                                                          .........................................
         Tonto National Forest Boundary,                                                                                                                
         which is generally the south                                                                                                                   
         line of Sections 19, 20, 21 and                                                                                                                
         22 and the southern line of the                                                                                                                
         west half of Section 23,                                                                                                                       
         Township 2 North, Range 7 East,                                                                                                                
         to a point which is the                                                                                                                        
         southwest corner of Section 19,                                                                                                                
         Township 2 North, Range 7 East;                                                                                                                
        6. thence, northerly along the                                                                                                                  
         Tonto National Forest Boundary                                                                                                                 
         to a point where the Tonto                                                                                                                     
         National Forest Boundary                                                                                                                       
         intersects with the eastern                                                                                                                    
         boundary of the Salt River                                                                                                                     
         Indian Reservation, generally                                                                                                                  
         described as the center line of                                                                                                                
         the Salt River Channel;                                                                                                                        
        7. thence, northeasterly and                                                                           .........................................
         northerly along the common                                                                                                                     
         boundary of the Tonto National                                                                                                                 
         Forest and the Salt River                                                                                                                      
         Indian Reservation to a point                                                                                                                  
         which is the northeast corner                                                                                                                  
         of the Salt River Indian                                                                                                                       
         Reservation, and the southeast                                                                                                                 
         corner of the Fort McDowell                                                                                                                    
         Indian Reservation, as shown on                                                                                                                
         the plat dated July 22, 1902,                                                                                                                  
         and recorded with the U.S.                                                                                                                     
         Government on June 15, 1902;                                                                                                                   
        8. thence, northeasterly along                                                                         .........................................
         the common boundary between the                                                                                                                
         Tonto National Forest and the                                                                                                                  
         Fort McDowell Indian                                                                                                                           
         Reservation to a point which is                                                                                                                
         the northeast corner of the                                                                                                                    
         Fort McDowell Indian                                                                                                                           
         Reservation;                                                                                                                                   
        9. thence, southwesterly along                                                                         .........................................
         the northern boundary of the                                                                                                                   
         Fort McDowell Indian                                                                                                                           
         Reservation, which line is a                                                                                                                   
         common boundary with the Tonto                                                                                                                 
         National Forest, to a point                                                                                                                    
         where the boundary intersects                                                                                                                  
         with the eastern line of                                                                                                                       
         Section 12, Township 4 North,                                                                                                                  
         Range 6 East;                                                                                                                                  
        10. thence, northerly along the                                                                        .........................................
         eastern line of Range 6 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 6 East intersects with                                                                                                                
         the southern line of Township 5                                                                                                                
         North, said line is the                                                                                                                        
         boundary between the Tonto                                                                                                                     
         National Forest and the east                                                                                                                   
         boundary of the McDowell                                                                                                                       
         Mountain Regional Park;                                                                                                                        
        11. thence, westerly along the                                                                         .........................................
         southern line of Township 5                                                                                                                    
         North to a point where the                                                                                                                     
         southern line intersects with                                                                                                                  
         the eastern line of Range 5                                                                                                                    
         East which line is the boundary                                                                                                                
         of Tonto National Forest and                                                                                                                   
         the north boundary of McDowell                                                                                                                 
         Mountain Regional Park;                                                                                                                        
        12. thence, northerly along the                                                                        .........................................
         eastern line of Range 5 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 5 East intersects with                                                                                                                
         the northern line of Township 5                                                                                                                
         North, which line is the                                                                                                                       
         boundary of the Tonto National                                                                                                                 
         Forest;                                                                                                                                        
        13. thence, westerly along the                                                                         .........................................
         northern line of Township 5                                                                                                                    
         North to a point where the                                                                                                                     
         northern line of Township 5                                                                                                                    
         North intersects with the                                                                                                                      
         easterly line of Range 4 East,                                                                                                                 
         said line is the boundary of                                                                                                                   
         the Tonto National Forest;                                                                                                                     
        14. thence, northerly along the                                                                        .........................................
         eastern line of Range 4 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 4 East intersects with                                                                                                                
         the northern line of Township 6                                                                                                                
         North, which line is the                                                                                                                       
         boundary of the Tonto National                                                                                                                 
         Forest;                                                                                                                                        
        15. thence, westerly along the                                                                         .........................................
         northern line of Township 6                                                                                                                    
         North to a point of                                                                                                                            
         intersection with the Maricopa-                                                                                                                
         Yavapai County line, which is                                                                                                                  
         generally described in Arizona                                                                                                                 
         Revised Statute Section 11-109                                                                                                                 
         as the center line of the Aqua                                                                                                                 
         Fria River (Also the north end                                                                                                                 
         of Lake Pleasant);                                                                                                                             

[[Page 31024]]

                                                                                                                                                        
        16. thence, southwesterly and                                                                          .........................................
         southerly along the Maricopa-                                                                                                                  
         Yavapai County line to a point                                                                                                                 
         which is described by Arizona                                                                                                                  
         Revised Statute Section 11-109                                                                                                                 
         as being on the center line of                                                                                                                 
         the Aqua Fria River, two miles                                                                                                                 
         southerly and below the mouth                                                                                                                  
         of Humbug Creek;                                                                                                                               
        17. thence, southerly along the                                                                        .........................................
         center line of the Aqua Fria                                                                                                                   
         River to the intersection of                                                                                                                   
         the center line of the Aqua                                                                                                                    
         Fria River and the center line                                                                                                                 
         of Beardsley Canal, said point                                                                                                                 
         is generally in the northeast                                                                                                                  
         quarter of Section 17, Township                                                                                                                
         5 North, Range 1 East, as shown                                                                                                                
         on the U.S. Geological Survey's                                                                                                                
         Baldy Mountain, Arizona                                                                                                                        
         Quadrangle Map, 7.5 Minute                                                                                                                     
         series (Topographic), dated                                                                                                                    
         1964;                                                                                                                                          
        18. thence, southwesterly and                                                                          .........................................
         southerly along the center line                                                                                                                
         of Beardsley Canal to a point                                                                                                                  
         which is the center line of the                                                                                                                
         Beardsley Canal where it                                                                                                                       
         intersects with the center line                                                                                                                
         of Indian School Road;                                                                                                                         
        19. thence, westerly along the                                                                         .........................................
         center line of West Indian                                                                                                                     
         School Road to a point where                                                                                                                   
         the center line of West Indian                                                                                                                 
         School Road intersects with the                                                                                                                
         center line of North Jackrabbit                                                                                                                
         Trail;                                                                                                                                         
        20. thence, southerly along the                                                                        .........................................
         center line of Jackrabbit Trail                                                                                                                
         approximately nine and three-                                                                                                                  
         quarter miles to a point where                                                                                                                 
         the center line of Jackrabbit                                                                                                                  
         Trail intersects with the Gila                                                                                                                 
         River, said point is generally                                                                                                                 
         on the north-south quarter                                                                                                                     
         section line of Section 8,                                                                                                                     
         Township 1 South, Range 2 West;                                                                                                                
        21. thence, northeasterly and                                                                          .........................................
         easterly up the Gila River to a                                                                                                                
         point where the Gila River                                                                                                                     
         intersects with the northern                                                                                                                   
         extension of the western                                                                                                                       
         boundary of Estrella Mountain                                                                                                                  
         Regional Park, which point is                                                                                                                  
         generally the quarter corner of                                                                                                                
         the northern line of Section                                                                                                                   
         31, Township 1 North, Range 1                                                                                                                  
         West;                                                                                                                                          
        22. thence, southerly along the                                                                        .........................................
         extension of the western                                                                                                                       
         boundary and along the western                                                                                                                 
         boundary of Estrella Mountain                                                                                                                  
         Regional Park to a point where                                                                                                                 
         the southern extension of the                                                                                                                  
         western boundary of Estrella                                                                                                                   
         Mountain Regional Park                                                                                                                         
         intersects with the southern                                                                                                                   
         line of Township 1 South;                                                                                                                      
        23. thence, easterly along the                                                                         .........................................
         southern line of Township 1                                                                                                                    
         South to a point where the                                                                                                                     
         south line of Township 1 South                                                                                                                 
         intersects with the western                                                                                                                    
         line of Range 1 East, which                                                                                                                    
         line is generally the southern                                                                                                                 
         boundary of Estrella Mountain                                                                                                                  
         Regional Park;                                                                                                                                 
        24. thence, southerly along the                                                                        .........................................
         western line of Range 1 East to                                                                                                                
         the southwest corner of Section                                                                                                                
         18, Township 2 South, Range 1                                                                                                                  
         East, said line is the western                                                                                                                 
         boundary of the Gila River                                                                                                                     
         Indian Reservation;                                                                                                                            
        25. thence, easterly along the                                                                         .........................................
         southern boundary of the Gila                                                                                                                  
         River Indian Reservation, which                                                                                                                
         is the southern line of                                                                                                                        
         Sections 13, 14, 15, 16, 17 and                                                                                                                
         18, Township 2 South, Range 1                                                                                                                  
         East, to the boundary between                                                                                                                  
         Maricopa and Pinal Counties as                                                                                                                 
         described in Arizona Revised                                                                                                                   
         Statutes Section 11-109 and 11-                                                                                                                
         113, which is the eastern line                                                                                                                 
         of Range 1 East;                                                                                                                               
        26. thence, northerly along the                                                                        .........................................
         eastern boundary of Range 1                                                                                                                    
         East, which is the common                                                                                                                      
         boundary between Maricopa and                                                                                                                  
         Pinal Counties, to a point                                                                                                                     
         where the eastern line of Range                                                                                                                
         1 East intersects the Gila                                                                                                                     
         River;                                                                                                                                         

[[Page 31025]]

                                                                                                                                                        
        27. thence, southerly up the                                                                                                                    
         Gila River to a point where the                                                                                                                
         Gila River intersects with the                                                                                                                 
         southern line of Township 2                                                                                                                    
         South; and                                                                                                                                     
        28. thence, easterly along the                                                                                                                  
         southern line of Township 2                                                                                                                    
         South to the point of beginning                                                                                                                
         which is a point where the                                                                                                                     
         southern line of Township 2                                                                                                                    
         South intersects with the                                                                                                                      
         eastern line of Range 7 East.                                                                                                                  
Tucson Area:                                                                                                                                            
    Pima County (part)                                                                                                                                  
        Tucson area.....................  ...........  1 hr.std.N.A.<SUP>2                                          .............<SUP>............................
    Rest of State.......................  ...........  1 hr.std.N.A.<SUP>2                                          .............<SUP>............................
        Apache County                                                                                          .............<SUP>............................
        Cochise County                                                                                         .........................................
        Coconino County                                                                                        .........................................
        Gila County                                                                                            .........................................
        Graham County                                                                                          .........................................
        Greenlee County                                                                                        .........................................
        La Paz County                                                                                          .........................................
        Maricopa County (part)                                                                                 .........................................
        area outside of Phoenix                                                                                .........................................
        Mohave County                                                                                          .........................................
        Navajo County                                                                                          .........................................
        Pima County (part)                                                                                     .........................................
        Remainder of county                                                                                    .........................................
        Pinal County                                                                                           .........................................
        Santa Cruz County                                                                                      .........................................
        Yavapai County                                                                                         .........................................
        Yuma County                                                                                            .........................................
--------------------------------------------------------------------------------------------------------------------------------------------------------
<SUP>1 This date is June 5, 1998, unless otherwise noted.                                                                                                    
<SUP>2 1 hour standard Not Applicable.                                                                                                                       

* * * * *
    5. In Sec. 81.304, the table entitled ``Arkansas-Ozone'' is revised 
to read as follows:


Sec. 81.304  Arkansas.

* * * * *

                                                            Arkansas--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                             Date<SUP>1                        Type                       Date<SUP>1                        Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 016 Central Arkansas Intrastate      ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
 (part).                                                                                                                                                
    Pulaski County                                                                                             ..............<SUP>...........................
AQCR 016 Central Arkansas Intrastate      ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
 (Remainder of).                                                                                                                                        
    Chicot County                                                                                              ..............<SUP>...........................
    Clark County                                                                                               ..............<SUP>...........................
    Cleveland County                                                                                           .........................................
    Conway County                                                                                              .........................................
    Dallas County                                                                                              .........................................
    Desha County                                                                                               .........................................
    Drew County                                                                                                .........................................
    Faulkner County                                                                                            .........................................
    Garland County                                                                                             .........................................
    Grant County                                                                                               .........................................
    Hot Spring County                                                                                          .........................................
    Jefferson County                                                                                           .........................................
    Lincoln County                                                                                             .........................................
    Lonoke County                                                                                              .........................................
    Perry County                                                                                               .........................................
    Pope County                                                                                                .........................................
    Saline County                                                                                              .........................................
    Yell County                                                                                                .........................................
AQCR 017 Metropolitan Fort Smith          ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
 Interstate.                                                                                                                                            
    Benton County                                                                                              ..............<SUP>...........................
    Crawford County                                                                                            .........................................
    Sebastian County                                                                                           .........................................
    Washington County                                                                                          .........................................

[[Page 31026]]

                                                                                                                                                        
AQCR 018 Metropolitan Memphis Interstate  ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
    Crittenden County                                                                                          .........................................
AQCR 019 Monroe-El Dorado Interstate....  ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
    Ashley County                                                                                              ..............<SUP>...........................
    Bradley County                                                                                             ..............<SUP>...........................
    Calhoun County                                                                                             ..............<SUP>...........................
    Nevada County                                                                                              ..............<SUP>...........................
    Ouachita County                                                                                            .........................................
    Union County                                                                                               .........................................
AQCR 020 Northeast Arkansas Intrastate..  ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
    Arkansas County                                                                                            .........................................
    Clay County                                                                                                .........................................
    Craighead County                                                                                           .........................................
    Cross County                                                                                               .........................................
    Greene County                                                                                              .........................................
    Independence County                                                                                        .........................................
    Jackson County                                                                                             .........................................
    Lawrence County                                                                                            .........................................
    Lee County                                                                                                 .........................................
    Mississippi County                                                                                         .........................................
    Monroe County                                                                                              .........................................
    Phillips County                                                                                            .........................................
    Poinsett County                                                                                            .........................................
    Prairie County                                                                                             .........................................
    Randolph County                                                                                            .........................................
    Sharp County                                                                                               .........................................
    St. Francis County                                                                                         .........................................
    White County                                                                                               .........................................
    Woodruff County                                                                                            .........................................
AQCR 021 Northwest Arkansas Intrastate..  ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
    Baxter County                                                                                              ..............<SUP>...........................
    Boone County                                                                                               ..............<SUP>...........................
    Carroll County                                                                                             ..............<SUP>...........................
    Cleburne County                                                                                            .........................................
    Franklin County                                                                                            .........................................
    Fulton County                                                                                              .........................................
    Izard County                                                                                               .........................................
    Johnson County                                                                                             .........................................
    Logan County                                                                                               .........................................
    Madison County                                                                                             .........................................
    Marion County                                                                                              .........................................
    Montgomery County                                                                                          .........................................
    Newton County                                                                                              .........................................
    Pike County                                                                                                .........................................
    Polk County                                                                                                .........................................
    Scott County                                                                                               .........................................
    Searcy County                                                                                              .........................................
    Stone County                                                                                               .........................................
    Van Buren County                                                                                           .........................................
AQCR 022 Shreveport-Texarkana-Tyler       ...........  1 hr.std.N.A. <SUP>2                                         ..............<SUP>...........................
 Interstate.                                                                                                                                            
    Columbia County                                                                                            .........................................
    Hempstead County                                                                                           .........................................
    Howard County                                                                                              .........................................
    Lafayette County                                                                                           .........................................
    Little River County                                                                                        .........................................
    Miller County                                                                                              .........................................
    Sevier County                                                                                              .........................................
--------------------------------------------------------------------------------------------------------------------------------------------------------
<SUP>1 This date is June 5, 1998, unless otherwise noted.                                                                                                    
<SUP>2 1 hour standard Not Applicable.                                                                                                                       

* * * * *
    6. In Sec. 81.305, the table entitled ``California-Ozone'' is 
revised to read as follows:


Sec. 81.305  California.

* * * * *

[[Page 31027]]



                                                           California--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Amador County Area......................     11/15/90  Unclassifiable/Attainment................     11/15/90  .........................................
Calaveras County Area:                                                                                                                                  
    Calaveras County....................     11/15/90  Unclassifiable/Attainment................     11/15/90  .........................................
Chico Area:                                                                                                                                             
    Butte County........................  ...........  1 hr.std.N.A.\2\.........................                                                        
Imperial County Area:                                                                                                                                   
    Imperial County.....................     11/15/90  Nonattainment............................     11/15/90  Sec. 185A Area \3\                       
Los Angeles-South Coast Air Basin Area:                                                                                                                 
    Los Angeles County (part)--that          11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of Los Angeles County which                                                                                                                
     lies south and west of a line                                                                                                                      
     described as follows.                                                                                                                              
        1. Beginning at the Los Angeles--                                                                                                               
         San Bernardino County boundary                                                                                                                 
         and running west along the                                                                                                                     
         Township line common to                                                                                                                        
         Township 3 North and Township 2                                                                                                                
         North, San Bernardino Base and                                                                                                                 
         Meridian;                                                                                                                                      
        2. then north along the range                                                                                                                   
         line common to Range 8 West and                                                                                                                
         Range 9 West;                                                                                                                                  
        3. then west along the Township                                                                                                                 
         line common to Township 4 North                                                                                                                
         and Township 3 North;                                                                                                                          
        4. then north along the range                                                                                                                   
         line common to Range 12 West                                                                                                                   
         and Range 13 West to the                                                                                                                       
         southeast corner of Section 12,                                                                                                                
         Township 5 North and Range 13                                                                                                                  
         West;                                                                                                                                          
        5. then west along the south                                                                                                                    
         boundaries of Sections 12, 11,                                                                                                                 
         10, 9, 8, and 7, Township 5                                                                                                                    
         North and Range 13 West to the                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest which is                                                                                                                       
         collinear with the range line                                                                                                                  
         common to Range 13 West and                                                                                                                    
         Range 14 West;                                                                                                                                 
        6. then north and west along the                                                                                                                
         Angeles National Forest                                                                                                                        
         boundary to the point of                                                                                                                       
         intersection with the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North (point is                                                                                                                 
         at the northwest corner of                                                                                                                     
         Section 4 in Township 6 North                                                                                                                  
         and Range 14 West);                                                                                                                            
        7. then west along the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North;                                                                                                                          
        8. then north along the range                                                                                                                   
         line common to Range 15 West                                                                                                                   
         and Range 16 West to the                                                                                                                       
         southeast corner of Section 13,                                                                                                                
         Township 7 North and Range 16                                                                                                                  
         West;                                                                                                                                          
        9. then along the south                                                                                                                         
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 7                                                                                                                 
         North and Range 16 West;                                                                                                                       
        10. then north along the range                                                                                                                  
         line common to Range 16 West                                                                                                                   
         and Range 17 West to the north                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest (collinear with                                                                                                                
         the Township line common to                                                                                                                    
         Township 8 North and Township 7                                                                                                                
         North);                                                                                                                                        
        11. then west along the Angeles                                                                                                                 
         National Forest boundary to the                                                                                                                
         point of intersection with the                                                                                                                 
         south boundary of the Rancho La                                                                                                                
         Liebre Land Grant;                                                                                                                             
        12. then west and north along                                                                                                                   
         this land grant boundary to the                                                                                                                
         Los Angeles-Kern County                                                                                                                        
         boundary.                                                                                                                                      
    Orange County.......................     11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
    Riverside County (part)--that            11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of.                                                                                                                                        
    Riverside County which lies to the                                                                                                                  
     west of a line described as                                                                                                                        
     follows:                                                                                                                                           
        1. Beginning at the Riverside--                                                                                                                 
         San Diego County boundary and                                                                                                                  
         running north along the range                                                                                                                  
         line common to Range 4 East and                                                                                                                
         Range 3 East, San Bernardino                                                                                                                   
         Base and Meridian;                                                                                                                             
        2. then east along the Township                                                                                                                 
         line common to Township 8 South                                                                                                                
         and Township 7 South;                                                                                                                          
        3. then north along the range                                                                                                                   
         line common to Range 5 East and                                                                                                                
         Range 4 East;                                                                                                                                  

[[Page 31028]]

                                                                                                                                                        
        4. then west along the Township                                                                                                                 
         line common to Township 6 South                                                                                                                
         and Township 7 South to the                                                                                                                    
         southwest corner of Section 34,                                                                                                                
         Township 6 South, Range 4 East;                                                                                                                
        5. then north along the west                                                                                                                    
         boundaries of Sections 34, 27,                                                                                                                 
         22, 15, 10, and 3, Township 6                                                                                                                  
         South, Range 4 East;                                                                                                                           
        6. then west along the Township                                                                                                                 
         line common to Township 5 South                                                                                                                
         and Township 6 South;                                                                                                                          
        7. then north along the range                                                                                                                   
         line common to Range 4 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        8. then west along the south                                                                                                                    
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 5                                                                                                                 
         South, Range 3 East;                                                                                                                           
        9. then north along the range                                                                                                                   
         line common to Range 2 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        10. then west along the Township                                                                                                                
         line common to Township 4 South                                                                                                                
         and Township 3 South to the                                                                                                                    
         intersection of the southwest                                                                                                                  
         boundary of partial Section 31,                                                                                                                
         Township 3 South, Range 1 West;                                                                                                                
        11. then northwest along that                                                                                                                   
         line to the intersection with                                                                                                                  
         the range line common to Range                                                                                                                 
         2 West and Range 1 West;                                                                                                                       
        12. then north to the Riverside-                                                                                                                
         San Bernardino County line.                                                                                                                    
    San Bernardino County (part)--that       11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of San Bernardino County                                                                                                                   
     which lies south and west of line                                                                                                                  
     of a line described as follows:.                                                                                                                   
        1. Beginning at the San                                                                                                                         
         Bernardino--Riverside County                                                                                                                   
         boundary and running north                                                                                                                     
         along the range line common to                                                                                                                 
         Range 3 East and Range 2 East,                                                                                                                 
         San Bernardino Base and                                                                                                                        
         Meridian;                                                                                                                                      
        2. then west along the Township                                                                                                                 
         line common to Township 3 North                                                                                                                
         and Township 2 North to the San                                                                                                                
         Bernardino--Los Angeles County                                                                                                                 
         boundary.                                                                                                                                      
Monterey Bay Area:                                                                                                                                      
    Monterey County.....................  ...........  1 hr.std.N.A. \2\........................                                                        
    San Benito County...................  ...........  1 hr.std.N.A. \2\........................                                                        
    Santa Cruz County...................  ...........  1 hr.std.N.A. \2\........................                                                        
Sacramento Metro Area:                                                                                                                                  
    El Dorado County (part).............     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    All portions of the county except                                                                                                                   
     that portion of El Dorado County                                                                                                                   
     within the drainage area naturally                                                                                                                 
     tributary to Lake Tahoe including                                                                                                                  
     said Lake.                                                                                                                                         
    Placer County (part):...............     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    All portions of the county except                                                                                                                   
     that portion of Placer County                                                                                                                      
     within the drainage area naturally                                                                                                                 
     tributary to Lake Tahoe including                                                                                                                  
     said Lake, plus that area in the                                                                                                                   
     vicinity of the head of the Truckee                                                                                                                
     River described as follows:                                                                                                                        
     commencing at the point common to                                                                                                                  
     the aforementioned drainage area                                                                                                                   
     crestline and the line common to                                                                                                                   
     Townships 15 North and 16 North,                                                                                                                   
     Mount Diablo Base and Meridian                                                                                                                     
     (M.D.B.&M.), and following that                                                                                                                    
     line in a westerly direction to the                                                                                                                
     northwest corner of Section 3,                                                                                                                     
     Township 15 North, Range 16 East,                                                                                                                  
     M.D.B.&M., thence south along the                                                                                                                  
     west line of Sections 3 and 10,                                                                                                                    
     Township 15 North, Range 16 East,                                                                                                                  
     M.D.B.&M., to the intersection with                                                                                                                
     the said drainage area crestline,                                                                                                                  
     thence following the said drainage                                                                                                                 
     area boundary in a southeasterly,                                                                                                                  
     then northeasterly direction to and                                                                                                                
     along the Lake Tahoe Dam, thence                                                                                                                   
     following the said drainage area                                                                                                                   
     crestline in a northeasterly, then                                                                                                                 
     northwesterly direction to the                                                                                                                     
     point of beginning.                                                                                                                                
    Sacramento County...................     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    Solano County (part) That portion of     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               

[[Page 31029]]

                                                                                                                                                        
    Solano County which lies north and                                                                                                                  
     east of a line described as                                                                                                                        
     follows: Description of boundary in                                                                                                                
     Solano county between San Francisco                                                                                                                
     and Sacramento: Beginning at the                                                                                                                   
     intersection of the westerly                                                                                                                       
     boundary of Solano County and the                                                                                                                  
     \1/4\ section line running east and                                                                                                                
     west through the center of Section                                                                                                                 
     34; T. 6 N., R. 2 W., M.D.B.&M.,                                                                                                                   
     thence east along said \1/4\                                                                                                                       
     section line to the east boundary                                                                                                                  
     of Section 36, T. 6 N., R. 2 W.,                                                                                                                   
     thence south \1/2\ mile and east                                                                                                                   
     2.0 miles, more or less, along the                                                                                                                 
     west and south boundary of Los                                                                                                                     
     Putos Rancho to the northwest                                                                                                                      
     corner of Section 4, T. 5 N., R. 1                                                                                                                 
     W., thence east along a line common                                                                                                                
     to T. 5 N. and T. 6 N. to the                                                                                                                      
     northeast corner of Section 3, T. 5                                                                                                                
     N., R. 1 E., thence south along                                                                                                                    
     section lines to the southeast                                                                                                                     
     corner of Section 10, T. 3 N., R. 1                                                                                                                
     E., thence east along section lines                                                                                                                
     to the south \1/4\ corner of                                                                                                                       
     Section 8, T. 3 N., R. 2 E., thence                                                                                                                
     east to the boundary between Solano                                                                                                                
     and Sacramento Counties.                                                                                                                           
    Sutter County (part--southern            11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
     portion) South of a line connecting                                                                                                                
     the northern border of Yolo Co. to                                                                                                                 
     the SW tip of Yuba Co. and                                                                                                                         
     continuing along the southern Yuba                                                                                                                 
     County border to Placer County..                                                                                                                   
    Yolo County.........................     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
San Diego Area:                                                                                                                                         
    San Diego County....................      2/21/95  Nonattainment............................      2/21/95  Serious.                                 
San Francisco-Bay Area:                                                                                                                                 
    Alameda County......................      6/21/95  Attainment...............................                                                        
    Contra Costa County.................      6/21/95  Attainment...............................                                                        
    Marin County........................      6/21/95  Attainment...............................                                                        
    Napa County.........................      6/21/95  Attainment...............................                                                        
    San Francisco County................      6/21/95  Attainment...............................                                                        
    San Mateo County....................      6/21/95  Attainment...............................                                                        
    Santa Clara County..................      6/21/95  Attainment...............................                                                        
    Solano County (part)................      6/21/95  Attainment...............................                                                        
        That portion of the county that                                                                                                                 
         lies south and west of the line                                                                                                                
         described that follows:                                                                                                                        
         Description of boundary in                                                                                                                     
         Solano County between San                                                                                                                      
         Francisco and Sacramento:                                                                                                                      
         Beginning at the intersection                                                                                                                  
         at the westerly boundary of                                                                                                                    
         Solano County and the \1/4\                                                                                                                    
         section line running east and                                                                                                                  
         west through the center of                                                                                                                     
         Section 34; T.6 N., R. 2 W.,                                                                                                                   
         M.D.B.&M., thence east along                                                                                                                   
         said \1/2\ section line to the                                                                                                                 
         east boundary of Section 36, T.                                                                                                                
         6 N., R. 2 W., thence south \1/                                                                                                                
         2\ mile and east 2.0 miles,                                                                                                                    
         more or less, along the west                                                                                                                   
         and south boundary of Los Putos                                                                                                                
         Rancho to the northwest corner                                                                                                                 
         of Section 4, T. 5 N., R. 1 W,                                                                                                                 
         thence east along a line common                                                                                                                
         to T. 5 N., and T. 6 N. to the                                                                                                                 
         northeast corner of Section 3,                                                                                                                 
         T. 5 N., R. 1 E., thence south                                                                                                                 
         along section lines to the                                                                                                                     
         southeast corner of Section 10                                                                                                                 
         T. 3 N., R. 1 E., thence east                                                                                                                  
         along section lines to the                                                                                                                     
         south \1/4\ corner of Section 8                                                                                                                
         T. 3 N., R. 2 E., thence east                                                                                                                  
         to the boundary between Solano                                                                                                                 
         and Sacramento Counties.                                                                                                                       
    Sonoma County (part)................      6/21/95  Attainment...............................                                                        

[[Page 31030]]

                                                                                                                                                        
        That portion of Sonoma county                                                                                                                   
         which lies south and east of a                                                                                                                 
         line described as follows:                                                                                                                     
         Beginning at the south-easterly                                                                                                                
         corner of the Rancho Estero                                                                                                                    
         Americano, being on the                                                                                                                        
         boundary line between Marin                                                                                                                    
         Sonoma Counties, California;                                                                                                                   
         thence running northerly along                                                                                                                 
         the easterly boundary line of                                                                                                                  
         said Rancho Estero Americano to                                                                                                                
         the northeasterly corner                                                                                                                       
         therof, being an angle corner                                                                                                                  
         in the westerly boundary line                                                                                                                  
         of Rancho Canada de Jonive,                                                                                                                    
         thence running along said                                                                                                                      
         boundary of Rancho Canada de                                                                                                                   
         Jonive westerly; northerly and                                                                                                                 
         easterly to its intersection                                                                                                                   
         with the easterly line of                                                                                                                      
         Graton Road; thence running                                                                                                                    
         along the easterly and                                                                                                                         
         southerly line of Graton Road                                                                                                                  
         northerly and easterly to its                                                                                                                  
         intersection with the easterly                                                                                                                 
         line of Sullivan Road; thence                                                                                                                  
         running northerly along said                                                                                                                   
         easterly line of Sullivan Road                                                                                                                 
         to the southerly line of Green                                                                                                                 
         Valley Road; thence running                                                                                                                    
         easterly along the said                                                                                                                        
         southerly line of Green Valley                                                                                                                 
         Road and easterly along the                                                                                                                    
         southerly line of State Highway                                                                                                                
         116, to the westerly and                                                                                                                       
         northerly line of Vine Hill                                                                                                                    
         Road; thence running along the                                                                                                                 
         westerly and northerly line of                                                                                                                 
         Vine Hill Road, northerly and                                                                                                                  
         easterly to its intersection                                                                                                                   
         with the westerly line of                                                                                                                      
         Laguna Road; thence running                                                                                                                    
         northerly along the westerly                                                                                                                   
         line of Laguna Road and the                                                                                                                    
         northerly projection thereof to                                                                                                                
         the northerly line of Trenton                                                                                                                  
         Road; thence running westerly                                                                                                                  
         along the northerly line of                                                                                                                    
         said Trenton Road to the                                                                                                                       
         easterly line of Trenton-                                                                                                                      
         Healdsburg Road; thence running                                                                                                                
         northerly along said easterly                                                                                                                  
         line of Trenton-Healdsburg Road                                                                                                                
         to the easterly line of                                                                                                                        
         Eastside Road; thence running                                                                                                                  
         northerly along said easterly                                                                                                                  
         line of Eastside Road to its                                                                                                                   
         intersection with the southerly                                                                                                                
         line of Rancho Sotoyome; thence                                                                                                                
         running easterly along said                                                                                                                    
         southerly line of Rancho                                                                                                                       
         Sotoyome to its intersection                                                                                                                   
         with the Township line common                                                                                                                  
         to Townships 8 and 9 North, Mt.                                                                                                                
         Diablo Base and Meridian;                                                                                                                      
         thence running easterly along                                                                                                                  
         said Township line to its                                                                                                                      
         intersection with the boundary                                                                                                                 
         line between Sonoma and Napa                                                                                                                   
         Counties, State of Califormia.                                                                                                                 
San Joaquin Valley Area:                                                                                                                                
    Fresno County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kern County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kings County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Madera County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Merced County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    San Joaquin County..................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Stanislaus County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Tulare County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Santa Barbara--Santa Maria--Lompoc Area:                                                                                                                
    Santa Barbara County................     11/15/90  Nonattainment............................      1/09/98  Serious.                                 
Southeast Desert Modified AQMA Area:                                                                                                                    
    Los Angeles County (part)--that          11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of Los Angeles County which                                                                                                                
     lies north and east of a line                                                                                                                      
     described as follows:.                                                                                                                             
        1. Beginning at the Los Angeles--                                                                                                               
         San Bernardino County boundary                                                                                                                 
         and running west along the                                                                                                                     
         Township line common to                                                                                                                        
         Township 3 North and Township 2                                                                                                                
         North, San Bernardino Base and                                                                                                                 
         Meridian;                                                                                                                                      
        2. then north along the range                                                                                                                   
         line common to Range 8 West and                                                                                                                
         Range 9 West;                                                                                                                                  
        3. then west along the Township                                                                                                                 
         line common to Township 4 North                                                                                                                
         and Township 3 North;                                                                                                                          

[[Page 31031]]

                                                                                                                                                        
        4. then north along the range                                                                                                                   
         line common to Range 12 West                                                                                                                   
         and Range 13 West to the                                                                                                                       
         southeast corner of Section 12,                                                                                                                
         Township 5 North and Range 13                                                                                                                  
         West;                                                                                                                                          
        5. then west along the south                                                                                                                    
         boundaries of Sections 12, 11,                                                                                                                 
         10, 9, 8, and 7, Township 5                                                                                                                    
         North and Range 13 West to the                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest which is                                                                                                                       
         collinear with the range line                                                                                                                  
         common to Range 13 West and                                                                                                                    
         Range 14 West;                                                                                                                                 
        6. then north and west along the                                                                                                                
         Angeles National Forest                                                                                                                        
         boundary to the point of                                                                                                                       
         intersection with the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North (point is                                                                                                                 
         at the northwest corner of                                                                                                                     
         Section 4 in Township 6 North                                                                                                                  
         and Range 14 West);                                                                                                                            
        7. then west along the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North;                                                                                                                          
        8. then north along the range                                                                                                                   
         line common to Range 15 West                                                                                                                   
         and Range 16 West to the                                                                                                                       
         southeast corner of Section 13,                                                                                                                
         Township 7 North and Range 16                                                                                                                  
         West;                                                                                                                                          
        9. then along the south                                                                                                                         
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 7                                                                                                                 
         North and Range 16 West;                                                                                                                       
        10. then north along the range                                                                                                                  
         line common to Range 16 West                                                                                                                   
         and Range 17 West to the north                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest (collinear with                                                                                                                
         the Township line common to                                                                                                                    
         Township 8 North and Township 7                                                                                                                
         North);                                                                                                                                        
        11. then west along the Angeles                                                                                                                 
         National Forest boundary to the                                                                                                                
         point of intersection with the                                                                                                                 
         south boundary of the Rancho La                                                                                                                
         Liebre Land Grant;                                                                                                                             
        12. then west and north along                                                                                                                   
         this land grant boundary to the                                                                                                                
         Los Angeles-Kern County                                                                                                                        
         boundary.                                                                                                                                      
    Riverside County (part)--that            11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of Riverside County which                                                                                                                  
     lies to the east of a line                                                                                                                         
     described as follows:.                                                                                                                             
        1. Beginning at the Riverside--                                                                                                                 
         San Diego County boundary and                                                                                                                  
         running north along the range                                                                                                                  
         line common to Range 4 East and                                                                                                                
         Range 3 East, San Bernardino                                                                                                                   
         Base and Meridian;                                                                                                                             
        2. then east along the Township                                                                                                                 
         line common to Township 8 South                                                                                                                
         and Township 7 South;                                                                                                                          
        3. then north along the range                                                                                                                   
         line common to Range 5 East and                                                                                                                
         Range 4 East;                                                                                                                                  
        4. then west along the Township                                                                                                                 
         line common to Township 6 South                                                                                                                
         and Township 7 South to the                                                                                                                    
         southwest corner of Section 34,                                                                                                                
         Township 6 South, Range 4 East;                                                                                                                
        5. then north along the west                                                                                                                    
         boundaries of Sections 34, 27,                                                                                                                 
         22, 15, 10, and 3, Township 6                                                                                                                  
         South, Range 4 East;                                                                                                                           
        6. then west along the Township                                                                                                                 
         line common to Township 5 South                                                                                                                
         and Township 6 South;                                                                                                                          
        7. then north along the range                                                                                                                   
         line common to Range 4 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        8. then west along the south                                                                                                                    
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 5                                                                                                                 
         South, Range 3 East;                                                                                                                           
        9. then north along the range                                                                                                                   
         line common to Range 2 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        10. then west along the Township                                                                                                                
         line common to Township 4 South                                                                                                                
         and Township 3 South to the                                                                                                                    
         intersection of the southwest                                                                                                                  
         boundary of partial Section 31,                                                                                                                
         Township 3 South, Range 1 West;                                                                                                                
        11. then northwest along that                                                                                                                   
         line to the intersection with                                                                                                                  
         the range line common to Range                                                                                                                 
         2 West and Range 1 West;                                                                                                                       

[[Page 31032]]

                                                                                                                                                        
        12. then north to the Riverside-                                                                                                                
         San Bernardino County line, and                                                                                                                
         that portion of Riverside                                                                                                                      
         County which lies to the west                                                                                                                  
         of a line described as follows:                                                                                                                
        13. beginning at the northeast                                                                                                                  
         corner of Section 4, Township 2                                                                                                                
         South, Range 5 East, a point on                                                                                                                
         the boundary line common to                                                                                                                    
         Riverside and San Bernardino                                                                                                                   
         Counties;                                                                                                                                      
        14. then southerly along section                                                                                                                
         lines to the centerline of the                                                                                                                 
         Colorado River Aquaduct;                                                                                                                       
        15. then southeasterly along the                                                                                                                
         centerline of said Colorado                                                                                                                    
         River Aquaduct to the southerly                                                                                                                
         line of Section 36, Township 3                                                                                                                 
         South, Range 7 East;                                                                                                                           
        16. then easterly along the                                                                                                                     
         Township line to the northeast                                                                                                                 
         corner of Section 6, Township 4                                                                                                                
         South, Range 9 East;                                                                                                                           
        17. then southerly along the                                                                                                                    
         easterly line of Section 6 to                                                                                                                  
         the southeast corner thereof;                                                                                                                  
        18. then easterly along section                                                                                                                 
         lines to the northeast corner                                                                                                                  
         of Section 10, Township 4                                                                                                                      
         South, Range 9 East;                                                                                                                           
        19. then southerly along section                                                                                                                
         lines to the southeast corner                                                                                                                  
         of Section 15, Township 4                                                                                                                      
         South, Range 9 East;                                                                                                                           
        20. then easterly along the                                                                                                                     
         section lines to the northeast                                                                                                                 
         corner of Section 21, Township                                                                                                                 
         4 South, Range 10 East;                                                                                                                        
        21. then southerly along the                                                                                                                    
         easterly line of Section 21 to                                                                                                                 
         the southeast corner thereof;                                                                                                                  
        22. then easterly along the                                                                                                                     
         northerly line of Section 27 to                                                                                                                
         the northeast corner thereof;                                                                                                                  
        23. then southerly along section                                                                                                                
         lines to the southeast corner                                                                                                                  
         of Section 34, Township 4                                                                                                                      
         South, Range 10 East;                                                                                                                          
        24. then easterly along the                                                                                                                     
         Township line to the northeast                                                                                                                 
         corner of Section 2, Township 5                                                                                                                
         South, Range 10 East;                                                                                                                          
        25. then southerly along the                                                                                                                    
         easterly line of Section 2, to                                                                                                                 
         the southeast corner thereof;                                                                                                                  
        26. then easterly along the                                                                                                                     
         northerly line of Section 12 to                                                                                                                
         the northeast corner thereof;                                                                                                                  
        27. then southerly along the                                                                                                                    
         range line to the southwest                                                                                                                    
         corner of Section 18, Township                                                                                                                 
         5 South, Range 11 East;                                                                                                                        
        28. then easterly along section                                                                                                                 
         lines to the northeast corner                                                                                                                  
         of Section 24, Township 5                                                                                                                      
         South, Range 11 East;                                                                                                                          
        29. then southerly along the                                                                                                                    
         range line to the southeast                                                                                                                    
         corner of Section 36, Township                                                                                                                 
         8 South, Range 11 East, a point                                                                                                                
         on the boundary line common to                                                                                                                 
         Riverside and San Diego                                                                                                                        
         Counties.                                                                                                                                      
    San Bernadino County (part)--that        11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of San Bernardino County                                                                                                                   
     which lies north and east of a line                                                                                                                
     described as follows:.                                                                                                                             
        1. Beginning at the San                                                                                                                         
         Bernardino--Riverside County                                                                                                                   
         boundary and running north                                                                                                                     
         along the range line common to                                                                                                                 
         Range 3 East and Range 2 East,                                                                                                                 
         San Bernardino Base and                                                                                                                        
         Meridian;                                                                                                                                      
        2. then west along the Township                                                                                                                 
         line common to Township 3 North                                                                                                                
         and Township 2 North to the San                                                                                                                
         Bernardino--Los Angeles County                                                                                                                 
         boundary; and that portion of                                                                                                                  
         San Bernardino County which                                                                                                                    
         lies south and west of a line                                                                                                                  
         described as follows:                                                                                                                          
        3. latitude 35 degrees, 10                                                                                                                      
         minutes north and longitude 115                                                                                                                
         degrees, 45 minutes west.                                                                                                                      
Ventura County Area:                                                                                                                                    
    Ventura County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Yuba City Area:                                                                                                                                         
    Sutter County (part--northern         ...........  1 hr.std.N.A.\2\.........................                                                        
     portion).                                                                                                                                          

[[Page 31033]]

                                                                                                                                                        
    North of a line connecting the                                                                                                                      
     northern border of Yolo County to                                                                                                                  
     the SW tip of Yuba County and                                                                                                                      
     continuing along the southern Yuba                                                                                                                 
     County border to Placer County.                                                                                                                    
    Yuba County.........................  ...........  1 hr.std.N.A.\2\.........................                                                        
Great Basin Valleys Air Basin...........  ...........  1 hr.std.N.A.\2\.........................                                                        
    Alpine County.......................                                                                                                                
    Inyo County.........................                                                                                                                
    Mono County.........................                                                                                                                
    Lake County Air Basin...............  ...........  1 hr.std.N.A.\2\.........................                                                        
    Lake County.........................                                                                                                                
Lake Tahoe Air Basin....................  ...........  1 hr.std.N.A.\2\.........................                                                        
    El Dorado County (part)                                                                                                                             
    Lake Tahoe Area: As described under                                                                                                                 
     40 CFR 81.275.                                                                                                                                     
    Placer County (part)                                                                                                                                
    Lake Tahoe Area: As described under                                                                                                                 
     40 CFR 81.275.                                                                                                                                     
Mountain Counties Air Basin (Remainder                                                                                                                  
 of):                                                                                                                                                   
    Mariposa County.....................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Nevada County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Plumas County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Sierra County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Tuolumne County.....................  ...........  1 hr.std.N.A.\2\.........................                                                        
North Coast Air Basin...................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Del Norte County                                                                                                                                    
    Humboldt County                                                                                                                                     
    Mendocino County                                                                                                                                    
    Sonoma County (part)                                                                                                                                
    Remainder of County                                                                                                                                 
    Trinity County                                                                                                                                      
Northeast Plateau Air Basin.............  ...........  1 hr.std.N.A.\2\.........................                                                        
    Lassen County                                                                                                                                       
    Modoc County                                                                                                                                        
    Siskiyou County                                                                                                                                     
Sacramento Valley Air Basin (Remainder                                                                                                                  
 of):                                                                                                                                                   
    Colusa County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Glenn County........................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Shasta County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Tehama County.......................  ...........  1 hr.std.N.A.\2\.........................                                                        
South Central Coast Air Basin (Remainder                                                                                                                
 of):                                                                                                                                                   
    Channel Islands.....................  ...........  1 hr.std.N.A.\2\.........................                                                        
    San Luis Obispo County..............  ...........  1 hr.std.N.A.\2\.........................                                                        
Southeast Desert NON-AQMA:                                                                                                                              
    Riverside County (part).............                                                                                                                
    Remainder of County.................  ...........  1 hr.std.N.A.\2\.........................                                                        
    San Bernadino County (part)                                                                                                                         
    Remainder of County.................  ...........  1 hr.std.N.A.\2\ ........................                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     
\3\ An area designated as an ozone nonattainment area as of the date of enactment of the CAAA of 1990 that did not violate the ozone NAAQS during the   
  period of 1987-1989.                                                                                                                                  

* * * * *
    7. In Sec. 81.306, the table entitled ``Colorado-Ozone'' is revised 
to read as follows:


Sec. 81.306  Colorado.

* * * * *

                                                            Colorado--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Denver--Boulder Area:                                                                                                                                   
    Adams County (part)                                                                                                                                 
        West of Kiowa Creek.............  ...........  1 hr.std.N.A.\2\                                                                                 
    Arapahoe County (part)                                                                                                                              
        West of Kiowa Creek.............  ...........  1 hr.std.N.A.\2\                                                                                 
    Boulder County (part)                                                                                                                               
        excluding Rocky Mtn. National     ...........  1 hr.std.N.A.\2\                                                                                 
         Park.                                                                                                                                          

[[Page 31034]]

                                                                                                                                                        
    Denver County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Douglas County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Jefferson County....................  ...........  1 hr.std.N.A.\2\                                                                                 
State AQCR 01...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Logan County                                                                                                                                        
    Morgan County                                                                                                                                       
    Phillips County                                                                                                                                     
    Sedgwick County                                                                                                                                     
    Washington County                                                                                                                                   
    Yuma County                                                                                                                                         
State AQCR 02...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Larimer County                                                                                                                                      
    Weld County                                                                                                                                         
State AQCR 03 (Remainder of)............  ...........  1 hr.std.N.A.\2\                                                                                 
    Adams County (part)                                                                                                                                 
        East of Kiowa Creek                                                                                                                             
    Arapahoe County (part)                                                                                                                              
        East of Kiowa Creek                                                                                                                             
    Boulder County (part)                                                                                                                               
        Rocky Mtn. National Park Only                                                                                                                   
    Clear Creek County                                                                                                                                  
    Gilpin County                                                                                                                                       
State AQCR 11...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Garfield County                                                                                                                                     
    Mesa County                                                                                                                                         
    Moffat County                                                                                                                                       
    Rio Blanco County                                                                                                                                   
Rest of State...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Alamosa County                                                                                                                                      
    Archuleta County                                                                                                                                    
    Baca County                                                                                                                                         
    Bent County                                                                                                                                         
    Chaffee County                                                                                                                                      
    Cheyenne County                                                                                                                                     
    Conejos County                                                                                                                                      
    Costilla County                                                                                                                                     
    Crowley County                                                                                                                                      
    Custer County                                                                                                                                       
    Delta County                                                                                                                                        
    Dolores County                                                                                                                                      
    Eagle County                                                                                                                                        
    El Paso County                                                                                                                                      
    Elbert County                                                                                                                                       
    Fremont County                                                                                                                                      
    Grand County                                                                                                                                        
    Gunnison County                                                                                                                                     
    Hinsdale County                                                                                                                                     
    Huerfano County                                                                                                                                     
    Jackson County                                                                                                                                      
    Kiowa County                                                                                                                                        
    Kit Carson County                                                                                                                                   
    La Plata County                                                                                                                                     
    Lake County                                                                                                                                         
    Las Animas County                                                                                                                                   
    Lincoln County                                                                                                                                      
    Mineral County                                                                                                                                      
    Montezuma County                                                                                                                                    
    Montrose County                                                                                                                                     
    Otero County                                                                                                                                        
    Ouray County                                                                                                                                        
    Park County                                                                                                                                         
    Pitkin County                                                                                                                                       
    Prowers County                                                                                                                                      
    Pueblo County                                                                                                                                       
    Rio Grande County                                                                                                                                   
    Routt County                                                                                                                                        
    Saguache County                                                                                                                                     
    San Juan County                                                                                                                                     
    San Miguel County                                                                                                                                   
    Summit County                                                                                                                                       

[[Page 31035]]

                                                                                                                                                        
    Teller County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    8. In Sec. 81.307, the table entitled ``Connecticut-Ozone'' is 
revised to read as follows:


Sec. 81.307  Connecticut.

* * * * *

                                                          Connecticut--Ozone (1-hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Greater Connecticut Area:                                                                                                                               
    Farfield County (part)..............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Shelton City                                                                                                                                    
    Hartford County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Litchfield County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        All cities and townships except:                                                                                                                
            Bridgewater Town, New                                                                                                                       
             Milford Town                                                                                                                               
    Middlesex County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    New Haven County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    New London County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Tolland County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Windham County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
New York--N. New Jersey--Long Island                                                                                                                    
 Area:                                                                                                                                                  
    Fairfield County (part).............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        All cities and towns except                                                                                                                     
         Shelton City                                                                                                                                   
    Litchfield County (part)............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        Bridgewater Town, New Milford                                                                                                                   
         Town                                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

* * * * *
    9. In Sec. 81.308, the table entitled ``Delaware-Ozone'' is revised 
to read as follows:


Sec. 81.308  Delaware.

* * * * *

                                                            Delaware--Ozone (1-hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Kent County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    New Castle County...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Sussex County Area:                                                                                                                                     
    Sussex County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    10. In Sec. 81.309, the table entitled ``District of Columbia-
Ozone'' is revised to read as follows:


Sec. 81.309  District of Columbia.

* * * * *

                                                      District of Columbia--Ozone (1-hour Standard)                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Washington Area:                                                                                                                                        
    Washington                                                                                                                                          

[[Page 31036]]

                                                                                                                                                        
        Entire Area.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

* * * * *
    11. In Sec. 81.310, the table entitled ``Florida-Ozone'' is revised 
to read as follows:


Sec. 81.310  Florida.

* * * * *

                                                             Florida-Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Alachua County                                                                                                                                      
    Baker County                                                                                                                                        
    Bay County                                                                                                                                          
    Bradford County                                                                                                                                     
    Brevard County                                                                                                                                      
    Broward County                                                                                                                                      
    Calhoun County                                                                                                                                      
    Charlotte County                                                                                                                                    
    Citrus County                                                                                                                                       
    Clay County                                                                                                                                         
    Collier County                                                                                                                                      
    Columbia County                                                                                                                                     
    Dade County                                                                                                                                         
    De Soto County                                                                                                                                      
    Dixie County                                                                                                                                        
    Duval County                                                                                                                                        
    Escambia County                                                                                                                                     
    Flagler County                                                                                                                                      
    Franklin County                                                                                                                                     
    Gadsden County                                                                                                                                      
    Gilchrist County                                                                                                                                    
    Glades County                                                                                                                                       
    Gulf County                                                                                                                                         
    Hamilton County                                                                                                                                     
    Hardee County                                                                                                                                       
    Hendry County                                                                                                                                       
    Hernando County                                                                                                                                     
    Highlands County                                                                                                                                    
    Hillsborough County                                                                                                                                 
    Holmes County                                                                                                                                       
    Indian River County                                                                                                                                 
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Lafayette County                                                                                                                                    
    Lake County                                                                                                                                         
    Lee County                                                                                                                                          
    Leon County                                                                                                                                         
    Levy County                                                                                                                                         
    Liberty County                                                                                                                                      
    Madison County                                                                                                                                      
    Manatee County                                                                                                                                      
    Marion County                                                                                                                                       
    Martin County                                                                                                                                       
    Monroe County                                                                                                                                       
    Nassau County                                                                                                                                       
    Okaloosa County                                                                                                                                     
    Okeechobee County                                                                                                                                   
    Orange County                                                                                                                                       
    Osceola County                                                                                                                                      
    Palm Beach County                                                                                                                                   
    Pasco County                                                                                                                                        
    Pinellas County                                                                                                                                     
    Polk County                                                                                                                                         
    Putnam County                                                                                                                                       

[[Page 31037]]

                                                                                                                                                        
    Santa Rosa County                                                                                                                                   
    Sarasota County                                                                                                                                     
    Seminole County                                                                                                                                     
    St. Johns County                                                                                                                                    
    St. Lucie County                                                                                                                                    
    Sumter County                                                                                                                                       
    Suwannee County                                                                                                                                     
    Taylor County                                                                                                                                       
    Union County                                                                                                                                        
    Volusia County                                                                                                                                      
    Wakulla County                                                                                                                                      
    Walton County                                                                                                                                       
    Washington County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    12. In Sec. 81.311, the table entitled ``Georgia--Ozone'' is 
revised to read as follows:


Sec. 81.311  Georgia.

* * * * *

                                                             Georgia-Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Atlanta Area:                                                                                                                                           
    Cherokee County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Clayton County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Cobb County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Coweta County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    De Kalb County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Douglas County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fayette County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Forsyth County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fulton County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Gwinnett County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Henry County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Paulding County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Rockdale County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Spalding County Area:                                                                                                                                   
    Spalding County.....................     11/15/90  Unclassifiable...........................     11/15/90                                           
                                                       /Attainment..............................                                                        
Rest of State...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Appling County                                                                                                                                      
    Atkinson County                                                                                                                                     
    Bacon County                                                                                                                                        
    Baker County                                                                                                                                        
    Baldwin County                                                                                                                                      
    Banks County                                                                                                                                        
    Barrow County                                                                                                                                       
    Bartow County                                                                                                                                       
    Ben Hill County                                                                                                                                     
    Berrien County                                                                                                                                      
    Bibb County                                                                                                                                         
    Bleckley County                                                                                                                                     
    Brantley County                                                                                                                                     
    Brooks County                                                                                                                                       
    Bryan County                                                                                                                                        
    Bulloch County                                                                                                                                      
    Burke County                                                                                                                                        
    Butts County                                                                                                                                        
    Calhoun County                                                                                                                                      
    Camden County                                                                                                                                       
    Candler County                                                                                                                                      
    Carroll County                                                                                                                                      
    Catoosa County                                                                                                                                      
    Charlton County                                                                                                                                     

[[Page 31038]]

                                                                                                                                                        
    Chatham County                                                                                                                                      
    Chattahoochee County                                                                                                                                
    Chattooga County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Clinch County                                                                                                                                       
    Coffee County                                                                                                                                       
    Colquitt County                                                                                                                                     
    Columbia County                                                                                                                                     
    Cook County                                                                                                                                         
    Crawford County                                                                                                                                     
    Crisp County                                                                                                                                        
    Dade County                                                                                                                                         
    Dawson County                                                                                                                                       
    Decatur County                                                                                                                                      
    Dodge County                                                                                                                                        
    Dooly County                                                                                                                                        
    Dougherty County                                                                                                                                    
    Early County                                                                                                                                        
    Echols County                                                                                                                                       
    Effingham County                                                                                                                                    
    Elbert County                                                                                                                                       
    Emanuel County                                                                                                                                      
    Evans County                                                                                                                                        
    Fannin County                                                                                                                                       
    Floyd County                                                                                                                                        
    Franklin County                                                                                                                                     
    Gilmer County                                                                                                                                       
    Glascock County                                                                                                                                     
    Glynn County                                                                                                                                        
    Gordon County                                                                                                                                       
    Grady County                                                                                                                                        
    Greene County                                                                                                                                       
    Habersham County                                                                                                                                    
    Hall County                                                                                                                                         
    Hancock County                                                                                                                                      
    Haralson County                                                                                                                                     
    Harris County                                                                                                                                       
    Hart County                                                                                                                                         
    Heard County                                                                                                                                        
    Houston County                                                                                                                                      
    Irwin County                                                                                                                                        
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jeff Davis County                                                                                                                                   
    Jefferson County                                                                                                                                    
    Jenkins County                                                                                                                                      
    Johnson County                                                                                                                                      
    Jones County                                                                                                                                        
    Lamar County                                                                                                                                        
    Lanier County                                                                                                                                       
    Laurens County                                                                                                                                      
    Lee County                                                                                                                                          
    Liberty County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Long County                                                                                                                                         
    Lowndes County                                                                                                                                      
    Lumpkin County                                                                                                                                      
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    McDuffie County                                                                                                                                     
    McIntosh County                                                                                                                                     
    Meriwether County                                                                                                                                   
    Miller County                                                                                                                                       
    Mitchell County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Morgan County                                                                                                                                       
    Murray County                                                                                                                                       

[[Page 31039]]

                                                                                                                                                        
    Muscogee County                                                                                                                                     
    Newton County                                                                                                                                       
    Oconee County                                                                                                                                       
    Oglethorpe County                                                                                                                                   
    Peach County                                                                                                                                        
    Pickens County                                                                                                                                      
    Pierce County                                                                                                                                       
    Pike County                                                                                                                                         
    Polk County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Putnam County                                                                                                                                       
    Quitman County                                                                                                                                      
    Rabun County                                                                                                                                        
    Randolph County                                                                                                                                     
    Richmond County                                                                                                                                     
    Schley County                                                                                                                                       
    Screven County                                                                                                                                      
    Seminole County                                                                                                                                     
    Stephens County                                                                                                                                     
    Stewart County                                                                                                                                      
    Sumter County                                                                                                                                       
    Talbot County                                                                                                                                       
    Taliaferro County                                                                                                                                   
    Tattnall County                                                                                                                                     
    Taylor County                                                                                                                                       
    Telfair County                                                                                                                                      
    Terrell County                                                                                                                                      
    Thomas County                                                                                                                                       
    Tift County                                                                                                                                         
    Toombs County                                                                                                                                       
    Towns County                                                                                                                                        
    Treutlen County                                                                                                                                     
    Troup County                                                                                                                                        
    Turner County                                                                                                                                       
    Twiggs County                                                                                                                                       
    Union County                                                                                                                                        
    Upson County                                                                                                                                        
    Walker County                                                                                                                                       
    Walton County                                                                                                                                       
    Ware County                                                                                                                                         
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wheeler County                                                                                                                                      
    White County                                                                                                                                        
    Whitfield County                                                                                                                                    
    Wilcox County                                                                                                                                       
    Wilkes County                                                                                                                                       
    Wilkinson County                                                                                                                                    
    Worth County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    13. In Sec. 81.312, the table entitled ``Hawaii--Ozone'' is revised 
to read as follows:


Sec. 81.312  Hawaii.

* * * * *

                                                             Hawaii-Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hawaii County                                                                                                                                       
    Honolulu County                                                                                                                                     
    Kalawao                                                                                                                                             

[[Page 31040]]

                                                                                                                                                        
    Kauai County                                                                                                                                        
    Maui County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    14. In Sec. 81.313, the table entitled ``Idaho--Ozone'' is revised 
to read as follows:


Sec. 81.313  Idaho.

* * * * *

                                                              Idaho-Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 61 Eastern Idaho Intrastate........  ...........  1 hr.std.N.A.\2\                                                                                 
    Bannock County                                                                                                                                      
    Bear Lake County                                                                                                                                    
    Bingham County                                                                                                                                      
    Bonneville County                                                                                                                                   
    Butte County                                                                                                                                        
    Caribou County                                                                                                                                      
    Clark County                                                                                                                                        
    Franklin County                                                                                                                                     
    Fremont County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Madison County                                                                                                                                      
    Oneida County                                                                                                                                       
    Power County                                                                                                                                        
    Teton County                                                                                                                                        
AQCR 62 E Washington-N Idaho Interstate.  ...........  1 hr.std.N.A.\2\                                                                                 
    Benewah County                                                                                                                                      
    Kootenai County                                                                                                                                     
    Latah County                                                                                                                                        
    Nez Perce County                                                                                                                                    
    Shoshone County                                                                                                                                     
AQCR 63 Idaho Intrastate................  ...........  1 hr.std.N.A.\2\                                                                                 
    Adams County                                                                                                                                        
    Blaine County                                                                                                                                       
    Boise County                                                                                                                                        
    Bonner County                                                                                                                                       
    Boundary County                                                                                                                                     
    Camas County                                                                                                                                        
    Cassia County                                                                                                                                       
    Clearwater County                                                                                                                                   
    Custer County                                                                                                                                       
    Elmore County                                                                                                                                       
    Gem County                                                                                                                                          
    Gooding County                                                                                                                                      
    Idaho County                                                                                                                                        
    Jerome County                                                                                                                                       
    Lemhi County                                                                                                                                        
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Minidoka County                                                                                                                                     
    Owyhee County                                                                                                                                       
    Payette County                                                                                                                                      
    Twin Falls County                                                                                                                                   
    Valley County                                                                                                                                       
    Washington County                                                                                                                                   
AQCR 64 Metropolitan Boise Interstate...  ...........  1 hr.std.N.A.\2\                                                                                 
    Ada County                                                                                                                                          
    Canyon County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    15. In Sec. 81.314, the table entitled ``Illinois--Ozone'' is 
revised to read as follows:

[[Page 31041]]

Sec. 81.314  Illinois.

* * * * *

                                                            Illinois--Ozone (1-hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Chicago-Gary-Lake County Area:                                                                                                                          
    Cook County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Du Page County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Grundy County (part)                                                                                                                                
        Aux Sable Township..............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        Goose Lake Township.............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Kane County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Kendall County (part)                                                                                                                               
        Oswego Township.................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Lake County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    McHenry County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Will County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Jersey County Area:                                                                                                                                     
    Jersey County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
St. Louis Area:                                                                                                                                         
    Madison County......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Monroe County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St. Clair County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Adams County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Alexander County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Bond County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Boone County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Brown County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Bureau County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Calhoun County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Carroll County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Cass County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Champaign County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Christian County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Clark County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Clay County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Clinton County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Coles County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Crawford County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Cumberland County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
De Kalb County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
De Witt County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Douglas County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Edgar County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Edwards County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Effingham County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fayette County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Ford County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Franklin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fulton County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Gallatin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Greene County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Grundy County (part):                                                                                                                                   
    All townships except Aux Sable and    ...........  1 hr.std.N.A.\2\                                                                                 
     Goose Lake.                                                                                                                                        
Hamilton County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hancock County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hardin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Henderson County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Henry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Iroquois County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jasper County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jefferson County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jo Daviess County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Johnson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Kankakee County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Kendall County (part):                                                                                                                                  
    All townships except Oswego.........  ...........  1 hr.std.N.A.\2\                                                                                 
Knox County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
La Salle County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lawrence County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lee County..............................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31042]]

                                                                                                                                                        
Livingston County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Logan County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Macon County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Macoupin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marion County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marshall County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mason County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Massac County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
McDonough County........................  ...........  1 hr.std.N.A.\2\                                                                                 
McLean County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Menard County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mercer County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Montgomery County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Morgan County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Moultrie County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Ogle County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Peoria County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Perry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Piatt County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pike County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pope County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pulaski County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Putnam County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Randolph County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Richland County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Rock Island County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Saline County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Sangamon County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Schuyler County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Scott County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Shelby County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Stark County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Stephenson County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Tazewell County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Union County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Vermilion County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wabash County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Warren County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Washington County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Wayne County............................  ...........  1 hr.std.N.A.\2\                                                                                 
White County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Whiteside County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Williamson County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Winnebago County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Woodford County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    16. In Sec. 81.315, the table entitled ``Indiana--Ozone'' is 
revised to read as follows:


Sec. 81.315  Indiana.

* * * * *

                                                            Indiana--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Chicago-Gary-Lake County Area:                                                                                                                          
    Lake County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Porter County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Evansville Area                                                                                                                                         
    Vanderburgh County..................  ...........  1 hr.std.N.A. \2\                                                                                
Indianapolis Area:                                                                                                                                      
    Marion County.......................  ...........  1 hr.std.N.A. \2\                                                                                
La Porte County Area:                                                                                                                                   
    La Porte County.....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Louisville Area:                                                                                                                                        

[[Page 31043]]

                                                                                                                                                        
    Clark County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Floyd County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
South Bend-Elkhart Area:                                                                                                                                
    Elkhart County......................  ...........  1 hr.std.N.A. \2\                                                                                
    St. Joseph County...................  ...........  1 hr.std.N.A. \2\                                                                                
Warrick County Area:                                                                                                                                    
    Warrick County......................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Allen County............................  ...........  1 hr.std.N.A. \2\                                                                                
Adams County............................  ...........  1 hr.std.N.A. \2\                                                                                
Bartholomew County......................  ...........  1 hr.std.N.A. \2\                                                                                
Benton County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Blackford County........................  ...........  1 hr.std.N.A. \2\                                                                                
Boone County............................  ...........  1 hr.std.N.A. \2\                                                                                
Brown County............................  ...........  1 hr.std.N.A. \2\                                                                                
Carroll County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Cass County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Clay County.............................  ...........  hr.std.N.A. \2\                                                                                  
Clinton County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Crawford County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Daviess County..........................  ...........  1 hr.std.N.A. \2\                                                                                
De Kalb County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Dearborn County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Decatur County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Delaware County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Dubois County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Fayette County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Fountain County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Franklin County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Fulton County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Gibson County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Grant County............................  ...........  1 hr.std.N.A. \2\                                                                                
Greene County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Hamilton County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Hancock County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Harrison County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Hendricks County........................  ...........  1 hr.std.N.A. \2\                                                                                
Henry County............................  ...........  1 hr.std.N.A. \2\                                                                                
Howard County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Huntington County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Jackson County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Jasper County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Jay County..............................  ...........  1 hr.std.N.A. \2\                                                                                
Jefferson County........................  ...........  1 hr.std.N.A. \2\                                                                                
Jennings County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Johnson County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Knox County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Kosciusko County........................  ...........  1 hr.std.N.A. \2\                                                                                
Lagrange County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Lawrence County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Madison County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Marshall County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Martin County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Miami County............................  ...........  1 hr.std.N.A. \2\                                                                                
Monroe County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Montgomery County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Morgan County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Newton County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Noble County............................  ...........  1 hr.std.N.A. \2\                                                                                
Ohio County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Orange County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Owen County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Parke County............................  ...........  1 hr.std.N.A. \2\                                                                                
Perry County............................  ...........  1 hr.std.N.A. \2\                                                                                
Pike County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Posey County............................  ...........  1 hr.std.N.A. \2\                                                                                
Pulaski County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Putnam County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Randolph County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Ripley County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Rush County.............................  ...........  1 hr.std.N.A. \2\                                                                                

[[Page 31044]]

                                                                                                                                                        
Scott County............................  ...........  1 hr.std.N.A. \2\                                                                                
Shelby County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Spencer County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Starke County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Steuben County..........................  ...........  1 hr.std.N.A. \2\                                                                                
Sullivan County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Switzerland County......................  ...........  1 hr.std.N.A. \2\                                                                                
Tippecanoe County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Tipton County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Union County............................  ...........  1 hr.std.N.A. \2\                                                                                
Vermillion County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Vigo County.............................  ...........  1 hr.std.N.A. \2\                                                                                
Wabash County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Warren County...........................  ...........  1 hr.std.N.A. \2\                                                                                
Washington County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Wayne County............................  ...........  1 hr.std.N.A. \2\                                                                                
Wells County............................  ...........  1 hr.std.N.A. \2\                                                                                
White County............................  ...........  1 hr.std.N.A. \2\                                                                                
Whitley County..........................  ...........  1 hr.std.N.A. \2\                                                                                
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    17. In Sec. 81.316, the table entitled ``Iowa--Ozone'' is revised 
to read as follows:


Sec. 81.316  Iowa.

* * * * *

                                                              Iowa--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A. \2\                                                                                
    Adair County                                                                                                                                        
    Adams County                                                                                                                                        
    Allamakee County                                                                                                                                    
    Appanoose County                                                                                                                                    
    Audubon County                                                                                                                                      
    Benton County                                                                                                                                       
    Black Hawk County                                                                                                                                   
    Boone County                                                                                                                                        
    Bremer County                                                                                                                                       
    Buchanan County                                                                                                                                     
    Buena Vista County                                                                                                                                  
    Butler County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Carroll County                                                                                                                                      
    Cass County                                                                                                                                         
    Cedar County                                                                                                                                        
    Cerro Gordo County                                                                                                                                  
    Cherokee County                                                                                                                                     
    Chickasaw County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Clayton County                                                                                                                                      
    Clinton County                                                                                                                                      
    Crawford County                                                                                                                                     
    Dallas County                                                                                                                                       
    Davis County                                                                                                                                        
    Decatur County                                                                                                                                      
    Delaware County                                                                                                                                     
    Des Moines County                                                                                                                                   
    Dickinson County                                                                                                                                    
    Dubuque County                                                                                                                                      
    Emmet County                                                                                                                                        
    Fayette County                                                                                                                                      
    Floyd County                                                                                                                                        
    Franklin County                                                                                                                                     

[[Page 31045]]

                                                                                                                                                        
    Fremont County                                                                                                                                      
    Greene County                                                                                                                                       
    Grundy County                                                                                                                                       
    Guthrie County                                                                                                                                      
    Hamilton County                                                                                                                                     
    Hancock County                                                                                                                                      
    Hardin County                                                                                                                                       
    Harrison County                                                                                                                                     
    Henry County                                                                                                                                        
    Howard County                                                                                                                                       
    Humboldt County                                                                                                                                     
    Ida County                                                                                                                                          
    Iowa County                                                                                                                                         
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Johnson County                                                                                                                                      
    Jones County                                                                                                                                        
    Keokuk County                                                                                                                                       
    Kossuth County                                                                                                                                      
    Lee County                                                                                                                                          
    Linn County                                                                                                                                         
    Louisa County                                                                                                                                       
    Lucas County                                                                                                                                        
    Lyon County                                                                                                                                         
    Madison County                                                                                                                                      
    Mahaska County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mills County                                                                                                                                        
    Mitchell County                                                                                                                                     
    Monona County                                                                                                                                       
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Muscatine County                                                                                                                                    
    O'Brien County                                                                                                                                      
    Osceola County                                                                                                                                      
    Page County                                                                                                                                         
    Palo Alto County                                                                                                                                    
    Plymouth County                                                                                                                                     
    Pocahontas County                                                                                                                                   
    Polk County                                                                                                                                         
    Pottawattamie County                                                                                                                                
    Poweshiek County                                                                                                                                    
    Ringgold County                                                                                                                                     
    Sac County                                                                                                                                          
    Scott County                                                                                                                                        
    Shelby County                                                                                                                                       
    Sioux County                                                                                                                                        
    Story County                                                                                                                                        
    Tama County                                                                                                                                         
    Taylor County                                                                                                                                       
    Union County                                                                                                                                        
    Van Buren County                                                                                                                                    
    Wapello County                                                                                                                                      
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Winnebago County                                                                                                                                    
    Winneshiek County                                                                                                                                   
    Woodbury County                                                                                                                                     
    Worth County                                                                                                                                        
    Wright County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    18. In Sec. 81.317, the table entitled ``Kansas--Ozone'' is revised 
to read as follows:

[[Page 31046]]

Sec. 81.317  Kansas.

* * * * *

                                                             Kansas-Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Kansas City Area:                                                                                                                                       
    Johnson County......................      7/23/92  Attainment                                                                                       
    Wyandotte County....................      7/23/92  Attainment                                                                                       
Allen County............................      7/23/92  1hr.std.N.A.\2\                                                                                  
Anderson County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Atchison County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Barber County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Barton County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Bourbon County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Brown County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Butler County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Chase County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Chautauqua County.......................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Cherokee County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Cheyenne County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Clark County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Clay County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Cloud County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Coffey County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Comanche County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Cowley County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Crawford County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Decatur County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Dickinson County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Doniphan County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Douglas County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Edwards County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Elk County..............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Ellis County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Ellsworth County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Finney County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Ford County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Franklin County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Geary County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Gove County.............................     7/23/92.  1 hr.std.N.A.\2\                                                                                 
Graham County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Grant County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Gray County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Greeley County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Greenwood County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Hamilton County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Harper County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Harvey County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Haskell County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Hodgeman County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Jefferson County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Jewell County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Kearny County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Kingman County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Kiowa County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Labette County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Lane County.............................     7/23/92.  1 hr.std.N.A.\2\                                                                                 
Leavenworth County......................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Lincoln County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Linn County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Logan County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Lyon County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Marion County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Marshall County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
McPherson County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Meade County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Miami County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Mitchell County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Montgomery County.......................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Morris County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Morton County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 

[[Page 31047]]

                                                                                                                                                        
Nemaha County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Neosho County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Ness County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Norton County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Osage County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Osborne County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Ottawa County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Pawnee County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Phillips County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Pottawatomie County.....................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Pratt County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Rawlins County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Reno County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Republic County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Rice County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Riley County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Rooks County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Rush County.............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Russell County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Saline County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Scott County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Sedgwick County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Seward County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Shawnee County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Sheridan County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Sherman County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Smith County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Stafford County.........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Stanton County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Stevens County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Sumner County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Thomas County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Trego County............................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Wabaunsee County........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Wallace County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Washington County.......................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Wichita County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Wilson County...........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
Woodson County..........................      7/23/92  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    19. In Sec. 81.318, the table entitled ``Kentucky-Ozone'' is 
revised to read as follows:


Sec. 81.318  Kentucky.

* * * * * * *

                                                            Kentucky--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Cincinnati-Hamilton Area:                                                                                                                               
    Boone County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Campbell County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Kenton County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Edmonson County Area:                                                                                                                                   
    Edmonson County.....................  ...........  x1 hr.std.N.A.\2\........................                                                        
Louisville Area:                                                                                                                                        
    Bullitt County (part)...............     11/15/90  Nonattainment............................     11/15/90  Moderate.                                

[[Page 31048]]

                                                                                                                                                        
        The area boundary is as follows:                                                                                                                
         Beginning at the intersection                                                                                                                  
         of Ky 1020 and the Jefferson-                                                                                                                  
         Bullitt County Line proceeding                                                                                                                 
         to the east along the county                                                                                                                   
         line to the intersection of                                                                                                                    
         county road 567 and the                                                                                                                        
         Jefferson-Bullitt County Line;                                                                                                                 
         proceeding south on county road                                                                                                                
         567 to the junction with Ky                                                                                                                    
         1116 (also known as Zoneton                                                                                                                    
         Road); proceeding to the south                                                                                                                 
         on Ky 1116 to the junction with                                                                                                                
         Hebron Lane; proceeding to the                                                                                                                 
         south on Hebron Lane to Cedar                                                                                                                  
         Creek; proceeding south on                                                                                                                     
         Cedar Creek to the confluence                                                                                                                  
         of Floyds Fork turning                                                                                                                         
         southeast along a creek that                                                                                                                   
         meets Ky 44 at Stallings                                                                                                                       
         Cemetery; proceeding west along                                                                                                                
         Ky 44 to the eastern most point                                                                                                                
         in the Shepherdsville city                                                                                                                     
         limits; proceeding south along                                                                                                                 
         the Shepherdsville city limits                                                                                                                 
         to the Salt River and west to a                                                                                                                
         point across the river from                                                                                                                    
         Mooney Lane; proceeding south                                                                                                                  
         along Mooney Lane to the                                                                                                                       
         junction of Ky 480; proceeding                                                                                                                 
         west on Ky 480 to the junction                                                                                                                 
         with Ky 2237; proceeding south                                                                                                                 
         on Ky 2237 to the junction with                                                                                                                
         Ky 61 and proceeding north on                                                                                                                  
         Ky 61 to the junction with Ky                                                                                                                  
         1494; proceeding south on Ky                                                                                                                   
         1494 to the junction with the                                                                                                                  
         perimeter of the Fort Knox                                                                                                                     
         Military Reservation;                                                                                                                          
         proceeding north along the                                                                                                                     
         military reservation perimeter                                                                                                                 
         to Castleman Branch Road;                                                                                                                      
         proceeding north on Castleman                                                                                                                  
         Branch Road to Ky 44;                                                                                                                          
         proceeding a very short                                                                                                                        
         distance west on Ky 44 to a                                                                                                                    
         junction with Ky 2723;                                                                                                                         
         proceeding north on Ky 2723 to                                                                                                                 
         the junction of Chillicoop                                                                                                                     
         Road; proceeding northeast on                                                                                                                  
         Chillicoop Road to the junction                                                                                                                
         of Ky 2673; proceeding north on                                                                                                                
         Ky 2673 to the junction of Ky                                                                                                                  
         1020; proceeding north on Ky                                                                                                                   
         1020 to the beginning; unless a                                                                                                                
         road or intersection of two or                                                                                                                 
         more roads defines the                                                                                                                         
         nonattainment boundary, the                                                                                                                    
         area shall extend outward 750                                                                                                                  
         feet from the center of the                                                                                                                    
         road or intersection                                                                                                                           
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Oldham County (part)................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                

[[Page 31049]]

                                                                                                                                                        
        The area boundary is as follows:                                                                                                                
         Beginning at the intersection                                                                                                                  
         of the Oldham-Jefferson County                                                                                                                 
         Line with the southbound lane                                                                                                                  
         of Interstate 71; proceeding to                                                                                                                
         the northeast along the                                                                                                                        
         southbound lane of Interstate                                                                                                                  
         71 to the intersection of Ky                                                                                                                   
         329 and the southbound lane of                                                                                                                 
         Interstate 71; proceeding to                                                                                                                   
         the northwest on Ky 329 to the                                                                                                                 
         intersection of Zaring Road and                                                                                                                
         Ky 329; proceeding to the east-                                                                                                                
         northeast on Zaring Road to the                                                                                                                
         junction of Cedar Point Road                                                                                                                   
         and Zaring Road; proceeding to                                                                                                                 
         the north-northeast on Cedar                                                                                                                   
         Point Road to the junction of                                                                                                                  
         Ky 393 and Cedar Point Road;                                                                                                                   
         proceeding to the south-                                                                                                                       
         southeast on Ky 393 to the                                                                                                                     
         junction of (the access road on                                                                                                                
         the north side of Reformatory                                                                                                                  
         Lake and the Reformatory);                                                                                                                     
         proceeding to the east-                                                                                                                        
         northeast on the access road to                                                                                                                
         the junction with Dawkins Lane                                                                                                                 
         and the access road; proceeding                                                                                                                
         to follow an electric power                                                                                                                    
         line east-northeast across from                                                                                                                
         the junction of county road 746                                                                                                                
         and Dawkins Lane to the east-                                                                                                                  
         northeast across Ky 53 on to                                                                                                                   
         the La Grange Water Filtration                                                                                                                 
         Plant; proceeding on to the                                                                                                                    
         east-southeast along the power                                                                                                                 
         line then south across Fort                                                                                                                    
         Pickens Road to a power                                                                                                                        
         substation on Ky 146;                                                                                                                          
         proceeding along the power line                                                                                                                
         south across Ky 146 and the                                                                                                                    
         Seaboard System Railroad track                                                                                                                 
         to adjoin the incorporated city                                                                                                                
         limits of La Grange; then                                                                                                                      
         proceeding east then south                                                                                                                     
         along the La Grange city limits                                                                                                                
         to a point abutting the north                                                                                                                  
         side of Ky 712; proceeding east-                                                                                                               
         southeast on Ky 712 to the                                                                                                                     
         junction of Massie School Road                                                                                                                 
         and Ky 712; proceeding to the                                                                                                                  
         south-southwest on Massie                                                                                                                      
         School Road to the intersection                                                                                                                
         of Massie School Road and Zale                                                                                                                 
         Smith Road; proceeding                                                                                                                         
         northeast on Zale Smith Road to                                                                                                                
         the junction of Ky 53 and Zale                                                                                                                 
         Smith Road; proceeding on Ky 53                                                                                                                
         to the northnorthwest to the                                                                                                                   
         junction of New Moody Lane and                                                                                                                 
         Ky 53; proceeding on New Moody                                                                                                                 
         Lane to the south-southwest                                                                                                                    
         until meeting the city limits                                                                                                                  
         of La Grange; then briefly                                                                                                                     
         proceeding north following the                                                                                                                 
         La Grange city limits to the                                                                                                                   
         intersection of the northbound                                                                                                                 
         lane of Interstate 71 and the                                                                                                                  
         La Grange city limits;                                                                                                                         
         proceeding southwest on the                                                                                                                    
         north-bound lane of Interstate                                                                                                                 
         71 until inter-secting with the                                                                                                                
         North Fork of Currys Fork;                                                                                                                     
         proceeding south-southwest                                                                                                                     
         beyond the confluence of Currys                                                                                                                
         Fork to the south-southwest                                                                                                                    
         beyond the confluence of Floyds                                                                                                                
         Fork continuing on to the                                                                                                                      
         Oldham-Jefferson County Line;                                                                                                                  
         proceeding northwest along the                                                                                                                 
         Oldham-Jefferson County Line to                                                                                                                
         the beginning; unless a road or                                                                                                                
         intersection of two or more                                                                                                                    
         roads defines the nonattainment                                                                                                                
         boundary, the area shall extend                                                                                                                
         outward 750 feet from the                                                                                                                      
         center of the road or                                                                                                                          
         intersection                                                                                                                                   
Owensboro Area:                                                                                                                                         
    Daviess County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hancock County......................  ...........  1 hr.std.N.A.\2\                                                                                 
        The area boundary is as follows:                                                                                                                
         Beginning at the Intersection                                                                                                                  
         of U.S. 60 and the Hancock-                                                                                                                    
         Daviess County Line; proceeding                                                                                                                
         east along U.S. 60 to the                                                                                                                      
         intersection of Yellow Creek                                                                                                                   
         and U.S. 60; proceeding north                                                                                                                  
         and west along Yellow Creek to                                                                                                                 
         the confluence of the Ohio                                                                                                                     
         River; proceeding west along                                                                                                                   
         the Ohio River to the                                                                                                                          
         confluence of Blackford Creek;                                                                                                                 
         proceeding south and east along                                                                                                                
         Blackford Creek to the                                                                                                                         
         beginning                                                                                                                                      
Morgan County Area:                                                                                                                                     
    Morgan County.......................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           

[[Page 31050]]

                                                                                                                                                        
Adair County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Allen County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Anderson County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Ballard County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Barren County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Bath County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Bell County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Bourbon County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Boyd County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Boyle County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Bracken County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Breathitt County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Breckinridge County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
Bullitt County (part):                                                                                                                                  
    Remainder of County.................  ...........  1 hr.std.N.A.\2\                                                                                 
Butler County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Caldwell County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Calloway County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Carlisle County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Carroll County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Carter County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Casey County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Christian County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Clark County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Clay County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Clinton County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Crittenden County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Cumberland County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Elliott County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Estill County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fayette County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fleming County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Floyd County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Franklin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fulton County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Gallatin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Garrard County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Grant County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Graves County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Grayson County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Green County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Greenup County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Hancock County (part):                                                                                                                                  
    Remainder of County.................  ...........  1 hr.std.N.A.\2\                                                                                 
Hardin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Harlan County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Harrison County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hart County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Henderson County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Henry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Hickman County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hopkins County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jessamine County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Johnson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Knott County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Knox County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Larue County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Laurel County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lawrence County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lee County..............................  ...........  1 hr.std.N.A.\2\                                                                                 
Leslie County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Letcher County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lewis County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Lincoln County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Livingston County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Logan County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Lyon County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Madison County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Magoffin County.........................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31051]]

                                                                                                                                                        
Marion County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marshall County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Martin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mason County............................  ...........  1 hr.std.N.A.\2\                                                                                 
McCracken County........................  ...........  1 hr.std.N.A.\2\                                                                                 
McCreary County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
McLean County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Meade County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Menifee County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mercer County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Metcalfe County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Monroe County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Montgomery County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Muhlenberg County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Nelson County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Nicholas County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Ohio County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Oldham County (part):                                                                                                                                   
    Remainder of County.................  ...........  1 hr.std.N.A.\2\                                                                                 
Owen County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Owsley County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Pendleton County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Perry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pike County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Powell County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Pulaski County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Robertson County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Rockcastle County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Rowan County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Russell County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Scott County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Shelby County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Simpson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Spencer County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Taylor County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Todd County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Trigg County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Trimble County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Union County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Warren County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Washington County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Wayne County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Webster County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Whitley County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wolfe County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Woodford County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    20. In Sec. 81.319, the table entitled ``Louisiana-Ozone'' is 
revised to read as follows:


Sec. 81.319  Louisiana.

* * * * *

                                                            Louisiana-Ozone (1-hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Baton Rouge Area:                                                                                                                                       
    Ascension Parish....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    East Baton Rouge Parish.............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Iberville Parish....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Livingston Parish...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    West Baton Rouge Parish.............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Beauregard Parish Area:                                                                                                                                 
    Beauregard Parish...................  ...........   1 hr.std.N.A. \2\                                                                               
Grant Parish Area:                                                                                                                                      

[[Page 31052]]

                                                                                                                                                        
    Grant Parish........................  ...........  1 hr.std.N.A. \2\                                                                                
Lafayette Area:                                                                                                                                         
    Lafayette Parish....................  ...........  1 hr.std.N.A. \2\                                                                                
Lafourche Parish Area:                                                                                                                                  
    Lafourche Parish....................      1/05/98  Nonattainment............................      1/05/98  Incomplete Data.                         
Lake Charles Area:                                                                                                                                      
    Calcasieu Parish....................  ...........  1 hr.std.N.A. \2\                                                                                
New Orleans Area:                                                                                                                                       
    Jefferson Parish....................  ...........  1 hr.std.N.A. \2\                                                                                
    Orleans Parish......................  ...........  1 hr.std.N.A. \2\                                                                                
    St. Bernard Parish..................  ...........  1 hr.std.N.A. \2\                                                                                
    St. Charles Parish..................  ...........  1 hr.std.N.A. \2\                                                                                
Pointe Coupee Area:                                                                                                                                     
    Pointe Coupee Parish................  ...........  1 hr.std.N.A. \2\                                                                                
St. James Parish Area:                                                                                                                                  
    St. James Parish....................  ...........  1 hr.std.N.A. \2\                                                                                
St. Mary Parish Area:                                                                                                                                   
    St. Mary Parish.....................  ...........  1 hr.std.N.A. \2\                                                                                
AQCR 019 Monroe-El Dorado Interstate....  ...........  1 hr.std.N.A. \2\                                                                                
    Caldwell Parish                                                                                                                                     
    Catahoula Parish                                                                                                                                    
    Concordia Parish                                                                                                                                    
    East Carroll Parish                                                                                                                                 
    Franklin Parish                                                                                                                                     
    La Salle Parish                                                                                                                                     
    Madison Parish                                                                                                                                      
    Morehouse Parish                                                                                                                                    
    Ouachita Parish                                                                                                                                     
    Richland Parish                                                                                                                                     
    Tensas Parish                                                                                                                                       
    Union Parish                                                                                                                                        
    West Carroll Parish                                                                                                                                 
AQCR 022 Shreveport-Texarkana-Tyler       ...........  1 hr.std.N.A. \2\                                                                                
 Inters..                                                                                                                                               
    Bienville Parish                                                                                                                                    
    Bossier Parish                                                                                                                                      
    Caddo Parish                                                                                                                                        
    Claiborne Parish                                                                                                                                    
    De Soto Parish                                                                                                                                      
    Jackson Parish                                                                                                                                      
    Lincoln Parish                                                                                                                                      
    Natchitoches Parish                                                                                                                                 
    Red River Parish                                                                                                                                    
    Sabine Parish                                                                                                                                       
    Webster Parish                                                                                                                                      
    Winn Parish                                                                                                                                         
AQCR 106 S. Louisiana-S.E. Texas          ...........  1 hr.std.N.A. \2\                                                                                
 Interstate.                                                                                                                                            
    St. John The Baptist Parish.........                                                                                                                
AQCR 106 S. Louisiana-S.E. Texas          ...........   1 hr.std.N.A. \2\                                                                               
 Interstate.                                                                                                                                            
    Acadia Parish                                                                                                                                       
    Allen Parish                                                                                                                                        
    Assumption Parish                                                                                                                                   
    Avoyelles Parish                                                                                                                                    
    Cameron Parish                                                                                                                                      
    East Feliciana Parish                                                                                                                               
    Evangeline Parish                                                                                                                                   
    Iberia Parish                                                                                                                                       
    Jefferson Davis Parish                                                                                                                              
    Plaquemines Parish                                                                                                                                  
    Rapides Parish                                                                                                                                      
    St. Helena Parish                                                                                                                                   
    St. Landry Parish                                                                                                                                   
    St. Martin Parish                                                                                                                                   
    St. Tammany Parish                                                                                                                                  
    Tangipahoa Parish                                                                                                                                   
    Terrebonne Parish                                                                                                                                   
    Vermilion Parish                                                                                                                                    
    Vernon Parish                                                                                                                                       
    Washington Parish                                                                                                                                   
    West Feliciana Parish                                                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

[[Page 31053]]

                                                                                                                                                        
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    21. In Sec. 81.320, the table entitled ``Maine-Ozone'' is revised 
to read as follows:


Sec. 81.320  Maine.

* * * * *

                                                              Maine-Ozone (1-hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Franklin County Area:                                                                                                                                   
    Franklin County (part)..............  ...........  1 hr.std.N.A. \3\                                                                                
Hancock County and Waldo County Area:                                                                                                                   
    Hancock County......................  ...........  1 hr.std.N.A. \3\                                                                                
    Waldo County........................  ...........  1 hr.std.N.A. \3\                                                                                
Knox County and Lincoln County Area:                                                                                                                    
    Knox County.........................  ...........  1 hr.std.N.A.                                                                                    
    Lincoln County......................  ...........  1 hr.std.N.A. \3\                                                                                
Lewiston-Auburn Area:                                                                                                                                   
    Androscoggin County.................  ...........  1 hr.std.N.A.. \3\                                                                               
    Kennebec County.....................  ...........  1 hr.std.N.A. \3\                                                                                
Oxford County Area:                                                                                                                                     
    Oxford County (part)................  ...........  1 hr.std.N.A. \3\                                                                                
Portland Area:                                                                                                                                          
    Cumberland County...................     11/15/90  Nonattainment............................     11/15/90  Moderate. \2\                            
    Sagadahoc County....................     11/15/90  Nonattainment............................     11/15/90  Moderate. \2\                            
    York County.........................     11/15/90  Nonattainment............................     11/15/90  Moderate. \2\                            
Somerset County Area:                                                                                                                                   
    Somerset County (part)..............  ...........  1 hr.std.N.A. \3\                                                                                
AQCR 108 Aroostook Intrastate...........  ...........  1 hr.std.N.A. \3\                                                                                
    Aroostook County (part) see 40 CFR                                                                                                                  
     81.179                                                                                                                                             
AQCR 109 Down East Intrastate...........  ...........  1 hr.std.N.A. \3\                                                                                
    Penobscot County (part), as                                                                                                                         
     described under 40 CFR 81.181.                                                                                                                     
    Piscataquis County (part) see 40 CFR                                                                                                                
     81.181                                                                                                                                             
    Washington County                                                                                                                                   
AQCR 111 Northwest Maine Intrastate.....  ...........  1 hr.std.N.A. \3\                                                                                
    (Remainder of) see 40 CFR 81.182                                                                                                                    
        Aroostook County                                                                                                                                
        Franklin County (part)                                                                                                                          
        Oxford County (part)                                                                                                                            
        Penobscot County (part)                                                                                                                         
        Piscataquis County (part)                                                                                                                       
        Somerset County (part)                                                                                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ Attainment date extended to November 15, 1997.                                                                                                      
\3\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    22. In Sec. 81.321, the table entitled ``Maryland-Ozone'' is 
revised to read as follows:


Sec. 81.321  Maryland.

* * * * *

                                                            Maryland--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Baltimore Area:                                                                                                                                         
    Anne Arundel County.................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    City of Baltimore...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Baltimore County....................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Carroll County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Harford County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Howard County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Kent County and Queen Anne's County                                                                                                                     
 Area:                                                                                                                                                  
    Kent County.........................       1/6/92  Nonattainment............................       1/6/92  Marginal.                                
    Queen Anne's County.................       1/6/92  Nonattainment............................       1/6/92  Marginal.                                
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Cecil County........................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               

[[Page 31054]]

                                                                                                                                                        
Washington, DC Area:                                                                                                                                    
    Calvert County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Charles County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Frederick County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Montgomery County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Prince George's County..............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
AQCR 113 Cumberland-Keyser Interstate...  ...........  1 hr.std.N.A. \2\                                                                                
    Allegany County                                                                                                                                     
    Garrett County                                                                                                                                      
    Washington County                                                                                                                                   
AQCR 114 Eastern Shore Interstate         ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Caroline County                                                                                                                                     
    Dorchester County                                                                                                                                   
    Somerset County                                                                                                                                     
    Talbot County                                                                                                                                       
    Wicomico County                                                                                                                                     
    Worcester County                                                                                                                                    
AQCR 116 Southern Maryland Intrastate     ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    St. Mary's County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    23. In Sec. 81.322, the table entitled ``Massachusetts--Ozone'' is 
revised to read as follows:


Sec. 81.322  Massachusetts.

* * * * *

                                                         Massachusetts--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Boston-Lawrence-Worcester (E. Mass)                                                                                                                     
 Area:                                                                                                                                                  
    Barnstable County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Bristol County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Dukes County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Essex County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Middlesex County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Nantucket County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Norfolk County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Plymouth County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Suffolk County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Worcester County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Springfield (W. Mass) Area:                                                                                                                             
    Berkshire County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Franklin County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Hampden County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Hampshire County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

* * * * *
    24. In Sec. 81.323, the table entitled ``Michigan--Ozone'' is 
revised to read as follows:


Sec. 81.323  Michigan.

* * * * *

                                                            Michigan--Ozone (1-hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allegan County Area:                                                                                                                                    
    Allegan County......................     11/15/90  Nonattainment............................     11/15/90  Incomplete Data.                         
Barry County Area:                                                                                                                                      
    Barry County........................  ...........  1 hr.std.N.A. \2\                                                                                
Battle Creek Area:                                                                                                                                      

[[Page 31055]]

                                                                                                                                                        
    Calhoun County......................  ...........  1 hr.std.N.A. \2\                                                                                
Benton Harbor Area:                                                                                                                                     
    Berrien County......................  ...........  1 hr.std.N.A. \2\                                                                                
Branch County Area:                                                                                                                                     
    Branch County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Cass County Area:                                                                                                                                       
    Cass County.........................  ...........  1 hr.std.N.A. \2\                                                                                
Detroit-Ann Arbor Area:                                                                                                                                 
    Livingston County...................       4/6/95  Attainment...............................                                                        
    Macomb County.......................       4/6/95  Attainment...............................                                                        
    Monroe County.......................       4/6/95  Attainment...............................                                                        
    Oakland County......................       4/6/95  Attainment...............................                                                        
    St. Clair County....................       4/6/95  Attainment...............................                                                        
    Washtenaw County....................       4/6/95  Attainment...............................                                                        
    Wayne County........................       4/6/95  Attainment...............................                                                        
Flint Area:                                                                                                                                             
    Genesee County......................  ...........  1 hr.std.N.A. \2\                                                                                
Grand Rapids Area:                                                                                                                                      
    Kent County.........................      6/21/96  Attainment...............................                                                        
    Ottawa County.......................      6/21/96  Attainment...............................                                                        
Gratiot County Area:                                                                                                                                    
    Gratiot County......................  ...........  1 hr.std.N.A. \2\                                                                                
Hillsdale County Area:                                                                                                                                  
    Hillsdale County....................  ...........  1 hr.std.N.A. \2\                                                                                
Huron County Area:                                                                                                                                      
    Huron County........................  ...........  1 hr.std.N.A. \2\                                                                                
Ionia County Area:                                                                                                                                      
    Ionia County........................  ...........  1 hr.std.N.A. \2\                                                                                
Jackson Area:                                                                                                                                           
    Jackson County......................  ...........  1 hr.std.N.A. \2\                                                                                
Kalamazoo Area:                                                                                                                                         
    Kalamazoo County....................  ...........  1 hr.std.N.A. \2\                                                                                
Lansing-East Lansing Area:                                                                                                                              
    Clinton County......................  ...........  1 hr.std.N.A. \2\                                                                                
    Eaton County........................  ...........  1 hr.std.N.A. \2\                                                                                
    Ingham County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Lapeer County Area:                                                                                                                                     
    Lapeer County.......................  ...........  1 hr.std.N.A. \2\                                                                                
Lenawee County Area:                                                                                                                                    
    Lenawee County......................  ...........  1 hr.std.N.A. \2\                                                                                
Mason County Area:                                                                                                                                      
    Mason County........................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Montcalm Area:                                                                                                                                          
    Montcalm County.....................  ...........  1 hr.std.N.A. \2\                                                                                
Muskegon Area:                                                                                                                                          
    Muskegon County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Oceana County Area:                                                                                                                                     
    Oceana County.......................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Saginaw-Bay City-Midland Area:                                                                                                                          
    Bay County..........................  ...........  1 hr.std.N.A. \2\                                                                                
    Midland County......................  ...........  1 hr.std.N.A. \2\                                                                                
    Saginaw County......................  ...........  1 hr.std.N.A. \2\                                                                                
Sanilac County Area:                                                                                                                                    
    Sanilac County......................  ...........  1 hr.std.N.A. \2\                                                                                
Shiawassee County Area:                                                                                                                                 
    Shiawassee County...................  ...........  1 hr.std.N.A. \2\                                                                                
St. Joseph County Area:                                                                                                                                 
    St. Joseph County...................  ...........  1 hr.std.N.A. \2\                                                                                
Tuscola County Area:                                                                                                                                    
    Tuscola County......................  ...........  1 hr.std.N.A. \2\                                                                                
Van Buren County Area:                                                                                                                                  
    Van Buren County....................  ...........  1 hr.std.N.A. \2\                                                                                
AQCR 122 Central Michigan Intrastate      ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Arenac County                                                                                                                                       
    Clare County                                                                                                                                        
    Gladwin County                                                                                                                                      
    Iosco County                                                                                                                                        
    Isabella County                                                                                                                                     
    Lake County                                                                                                                                         
    Mecosta County                                                                                                                                      

[[Page 31056]]

                                                                                                                                                        
    Newaygo County                                                                                                                                      
    Ogemaw County                                                                                                                                       
    Osceola County                                                                                                                                      
    Roscommon County                                                                                                                                    
    AQCR 126 Upper Michigan Intrastate                                                                                                                  
     (part)                                                                                                                                             
    Marquette County                      ...........  1 hr.std.N.A. \2\                                                                                
    AQCR 126 Upper Michigan Intrastate                                                                                                                  
    (Remainder of)                        ...........  1 hr.std.N.A. \2\                                                                                
    Alcona County                                                                                                                                       
    Alger County                                                                                                                                        
    Alpena County                                                                                                                                       
    Antrim County                                                                                                                                       
    Baraga County                                                                                                                                       
    Benzie County                                                                                                                                       
    Charlevoix County                                                                                                                                   
    Cheboygan County                                                                                                                                    
    Chippewa County                                                                                                                                     
    Crawford County                                                                                                                                     
    Delta County                                                                                                                                        
    Dickinson County                                                                                                                                    
    Emmet County                                                                                                                                        
    Gogebic County                                                                                                                                      
    Grand Traverse County                                                                                                                               
    Houghton County                                                                                                                                     
    Iron County                                                                                                                                         
    Kalkaska County                                                                                                                                     
    Keweenaw County                                                                                                                                     
    Leelanau County                                                                                                                                     
    Luce County                                                                                                                                         
    Mackinac County                                                                                                                                     
    Manistee County                                                                                                                                     
    Menominee County                                                                                                                                    
    Missaukee County                                                                                                                                    
    Montmorency County                                                                                                                                  
    Ontonagon County                                                                                                                                    
    Oscoda County                                                                                                                                       
    Otsego County                                                                                                                                       
    Presque Isle County                                                                                                                                 
    Schoolcraft County                                                                                                                                  
    Wexford County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    25. In Sec. 81.324, the table entitled ``Minnesota--Ozone'' is 
revised to read as follows:


Sec. 81.324  Minnesota.

* * * * *

                                                           Minnesota--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Minneapolis-Saint Paul Area:                                                                                                                            
    Anoka County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Carver County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Dakota County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hennepin County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Ramsey County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Scott County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Washington County...................  ...........  1 hr.std.N.A.\2\                                                                                 
Aitkin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Becker County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Beltrami County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Benton County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Big Stone County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Blue Earth County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Brown County............................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31057]]

                                                                                                                                                        
Carlton County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Cass County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Chippewa County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Chisago County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Clay County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Clearwater County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Cook County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Cottonwood County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Crow Wing County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Dodge County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Douglas County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Faribault County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fillmore County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Freeborn County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Goodhue County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Grant County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Houston County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hubbard County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Isanti County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Itasca County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Kanabec County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Kandiyohi County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Kittson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Koochiching County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Lac qui Parle County....................  ...........  1 hr.std.N.A.\2\                                                                                 
Lake County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Lake of the Woods County................  ...........  1 hr.std.N.A.\2\                                                                                 
Le Sueur County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lincoln County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lyon County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Mahnomen County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marshall County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Martin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
McLeod County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Meeker County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mille Lacs County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Morrison County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Mower County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Murray County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Nicollet County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Nobles County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Norman County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Olmsted County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Otter Tail County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Pennington County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Pine County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pipestone County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Polk County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pope County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Red Lake County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Redwood County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Renville County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Rice County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Rock County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Roseau County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Saint Louis County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Sherburne County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Sibley County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Stearns County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Steele County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Stevens County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Swift County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Todd County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Traverse County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wabasha County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wadena County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Waseca County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Watonwan County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wilkin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31058]]

                                                                                                                                                        
Winona County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wright County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Yellow Medicine County..................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    26. In Sec. 81.325, the table entitled ``Mississippi--Ozone'' is 
revised to read as follows:


Sec. 81.325  Mississippi.

* * * * *

                                                          Mississippi--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Memphis:                                                                                                                                                
    De Soto County......................     11/15/90  Unclassifiable /Attainment...............     11/15/90  .........................................
Rest of State...........................  ...........  1 hr.std.N.A.\2\.........................                                                        
    Adams County                                                                                                                                        
    Alcorn County                                                                                                                                       
    Amite County                                                                                                                                        
    Attala County                                                                                                                                       
    Benton County                                                                                                                                       
    Bolivar County                                                                                                                                      
    Calhoun County                                                                                                                                      
    Carroll County                                                                                                                                      
    Chickasaw County                                                                                                                                    
    Choctaw County                                                                                                                                      
    Claiborne County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Coahoma County                                                                                                                                      
    Copiah County                                                                                                                                       
    Covington County                                                                                                                                    
    Forrest County                                                                                                                                      
    Franklin County                                                                                                                                     
    George County                                                                                                                                       
    Greene County                                                                                                                                       
    Grenada County                                                                                                                                      
    Hancock County                                                                                                                                      
    Harrison County                                                                                                                                     
    Hinds County                                                                                                                                        
    Holmes County                                                                                                                                       
    Humphreys County                                                                                                                                    
    Issaquena County                                                                                                                                    
    Itawamba County                                                                                                                                     
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Jefferson Davis County                                                                                                                              
    Jones County                                                                                                                                        
    Kemper County                                                                                                                                       
    Lafayette County                                                                                                                                    
    Lamar County                                                                                                                                        
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Leake County                                                                                                                                        
    Lee County                                                                                                                                          
    Leflore County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Lowndes County                                                                                                                                      
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   

[[Page 31059]]

                                                                                                                                                        
    Neshoba County                                                                                                                                      
    Newton County                                                                                                                                       
    Noxubee County                                                                                                                                      
    Oktibbeha County                                                                                                                                    
    Panola County                                                                                                                                       
    Pearl River County                                                                                                                                  
    Perry County                                                                                                                                        
    Pike County                                                                                                                                         
    Pontotoc County                                                                                                                                     
    Prentiss County                                                                                                                                     
    Quitman County                                                                                                                                      
    Rankin County                                                                                                                                       
    Scott County                                                                                                                                        
    Sharkey County                                                                                                                                      
    Simpson County                                                                                                                                      
    Smith County                                                                                                                                        
    Stone County                                                                                                                                        
    Sunflower County                                                                                                                                    
    Tallahatchie County                                                                                                                                 
    Tate County                                                                                                                                         
    Tippah County                                                                                                                                       
    Tishomingo County                                                                                                                                   
    Tunica County                                                                                                                                       
    Union County                                                                                                                                        
    Walthall County                                                                                                                                     
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Wilkinson County                                                                                                                                    
    Winston County                                                                                                                                      
    Yalobusha County                                                                                                                                    
    Yazoo County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    27. In Sec. 81.326, the table entitled ``Missouri-Ozone'' is 
revised to read as follows:


Sec. 81.326  Missouri.

* * * * *

                                                            Missouri--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Kansas City Area:                                                                                                                                       
    Clay County.........................      7/23/92  Attainment...............................                                                        
    Jackson County......................      7/23/92  Attainment...............................                                                        
    Platte County.......................      7/23/92  Attainment...............................                                                        
St Louis Area:                                                                                                                                          
    Franklin County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St Charles County...................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St Louis............................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St Louis County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
AQCR 094 Metro Kansas City Interstate     ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Buchanan County                                                                                                                                     
    Cass County                                                                                                                                         
    Ray County                                                                                                                                          
AQCR 137 N. Missouri Intrastate (part)    ...........  1 hr.std.N.A. \2\                                                                                
 Pike County.                                                                                                                                           
    Ralls County                          ...........  1 hr.std.N.A. \2\                                                                                
AQCR 137 N. Missouri Intrastate           ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Adair County                                                                                                                                        
    Andrew County                                                                                                                                       
    Atchison County                                                                                                                                     
    Audrain County                                                                                                                                      
    Boone County                                                                                                                                        
    Caldwell County                                                                                                                                     

[[Page 31060]]

                                                                                                                                                        
    Callaway County                                                                                                                                     
    Carroll County                                                                                                                                      
    Chariton County                                                                                                                                     
    Clark County                                                                                                                                        
    Clinton County                                                                                                                                      
    Cole County                                                                                                                                         
    Cooper County                                                                                                                                       
    Daviess County                                                                                                                                      
    De Kalb County                                                                                                                                      
    Gentry County                                                                                                                                       
    Grundy County                                                                                                                                       
    Harrison County                                                                                                                                     
    Holt County                                                                                                                                         
    Howard County                                                                                                                                       
    Knox County                                                                                                                                         
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Linn County                                                                                                                                         
    Livingston County                                                                                                                                   
    Macon County                                                                                                                                        
    Marion County                                                                                                                                       
    Mercer County                                                                                                                                       
    Moniteau County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Nodaway County                                                                                                                                      
    Osage County                                                                                                                                        
    Putnam County                                                                                                                                       
    Randolph County                                                                                                                                     
    Saline County                                                                                                                                       
    Schuyler County                                                                                                                                     
    Scotland County                                                                                                                                     
    Shelby County                                                                                                                                       
    Sullivan County                                                                                                                                     
    Warren County                                                                                                                                       
    Worth County                                                                                                                                        
    Rest of State                         ...........  1 hr.std.N.A. \2\                                                                                
    Barry County                                                                                                                                        
    Barton County                                                                                                                                       
    Bates County                                                                                                                                        
    Benton County                                                                                                                                       
    Bollinger County                                                                                                                                    
    Butler County                                                                                                                                       
    Camden County                                                                                                                                       
    Cape Girardeau County                                                                                                                               
    Carter County                                                                                                                                       
    Cedar County                                                                                                                                        
    Christian County                                                                                                                                    
    Crawford County                                                                                                                                     
    Dade County                                                                                                                                         
    Dallas County                                                                                                                                       
    Dent County                                                                                                                                         
    Douglas County                                                                                                                                      
    Dunklin County                                                                                                                                      
    Gasconade County                                                                                                                                    
    Greene County                                                                                                                                       
    Henry County                                                                                                                                        
    Hickory County                                                                                                                                      
    Howell County                                                                                                                                       
    Iron County                                                                                                                                         
    Jasper County                                                                                                                                       
    Johnson County                                                                                                                                      
    Laclede County                                                                                                                                      
    Lafayette County                                                                                                                                    
    Lawrence County                                                                                                                                     
    Madison County                                                                                                                                      
    Maries County                                                                                                                                       
    McDonald County                                                                                                                                     
    Miller County                                                                                                                                       
    Mississippi County                                                                                                                                  

[[Page 31061]]

                                                                                                                                                        
    Morgan County                                                                                                                                       
    New Madrid County                                                                                                                                   
    Newton County                                                                                                                                       
    Oregon County                                                                                                                                       
    Ozark County                                                                                                                                        
    Pemiscot County                                                                                                                                     
    Perry County                                                                                                                                        
    Pettis County                                                                                                                                       
    Phelps County                                                                                                                                       
    Polk County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Reynolds County                                                                                                                                     
    Ripley County                                                                                                                                       
    Scott County                                                                                                                                        
    Shannon County                                                                                                                                      
    St. Clair County                                                                                                                                    
    St. Francois County                                                                                                                                 
    Ste. Genevieve County                                                                                                                               
    Stoddard County                                                                                                                                     
    Stone County                                                                                                                                        
    Taney County                                                                                                                                        
    Texas County                                                                                                                                        
    Vernon County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wright County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    28. In Sec. 81.327, the table entitled ``Montana-Ozone'' is revised 
to read as follows:


Sec. 81.327  Montana.

* * * * * * *

                                                            Montana--Ozone (1-hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Beaverhead County                         ...........   1 hr.std.N.A.\2\                                                                                
 ..........................                                                                                                                             
Big Horn County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
    excluding Crow, Northern Cheyenne                                                                                                                   
     Indian Reservations                                                                                                                                
Blaine County                             ...........   1 hr.std.N.A.\2\                                                                                
 (part)........................                                                                                                                         
    excluding Fort Belknap Indian                                                                                                                       
     Reservation                                                                                                                                        
Broadwater County                         ...........   1 hr.std.N.A.\2\                                                                                
 ..........................                                                                                                                             
Carbon County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Carter County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Cascade County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Chouteau County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
    excluding Rocky Boy Indian                                                                                                                          
     Reservation                                                                                                                                        
Custer County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Daniels County                            ...........   1 hr.std.N.A.\2\                                                                                
 (part).......................                                                                                                                          
    excluding Fort Peck Indian                                                                                                                          
     Reservation                                                                                                                                        
Dawson County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Deer Lodge County                         ...........   1 hr.std.N.A.\2\                                                                                
 ..........................                                                                                                                             
Fallon County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Fergus County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Flathead County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
     excluding Flathead Indian                                                                                                                          
     Resevation                                                                                                                                         
Gallatin County                           ...........   1 hr.std.N.A.\2\                                                                                
 ............................                                                                                                                           
Garfield County                           ...........   1 hr.std.N.A.\2\                                                                                
 ............................                                                                                                                           
Glacier County                            ...........   1 hr.std.N.A.\2\                                                                                
 (part).......................                                                                                                                          
    excluding Blackfeet Indian                                                                                                                          
     Reservation                                                                                                                                        
Golden Valley County                      ...........   1 hr.std.N.A.\2\                                                                                
 .......................                                                                                                                                
Granite County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Hill County                               ...........   1 hr.std.N.A.\2\                                                                                
 (part)..........................                                                                                                                       

[[Page 31062]]

                                                                                                                                                        
    excluding Rocky Boy Indian                                                                                                                          
     Reservation                                                                                                                                        
Jefferson County                          ...........   1 hr.std.N.A.\2\                                                                                
 ...........................                                                                                                                            
Judith Basin County                       ...........   1 hr.std.N.A.\2\                                                                                
 ........................                                                                                                                               
Lake County                               ...........   1 hr.std.N.A.\2\                                                                                
 (part)..........................                                                                                                                       
    excluding Flathead Indian                                                                                                                           
     Reservation                                                                                                                                        
Lewis and Clark County                    ...........   1 hr.std.N.A.\2\                                                                                
 .....................                                                                                                                                  
Liberty County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Lincoln County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Madison County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
McCone County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Meagher County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Mineral County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Missoula County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
    excluding Flathead Indian                                                                                                                           
     Reservation                                                                                                                                        
Musselshell County                        ...........   1 hr.std.N.A.\2\                                                                                
 .........................                                                                                                                              
Park County                               ...........   1 hr.std.N.A.\2\                                                                                
 ................................                                                                                                                       
Petroleum County                          ...........   1 hr.std.N.A.\2\                                                                                
 ...........................                                                                                                                            
Phillips County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
    excluding Fort Belknap Indian                                                                                                                       
     Reservation                                                                                                                                        
Pondera County                            ...........   1 hr.std.N.A.\2\                                                                                
 (part).......................                                                                                                                          
    excluding Blackfeet Indian                                                                                                                          
     Reservation                                                                                                                                        
Powder River County                       ...........   1 hr.std.N.A.\2\                                                                                
 ........................                                                                                                                               
Powell County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Prairie County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Ravalli County                            ...........   1 hr.std.N.A.\2\                                                                                
 .............................                                                                                                                          
Richland County                           ...........   1 hr.std.N.A.\2\                                                                                
 ............................                                                                                                                           
Roosevelt County                          ...........   1 hr.std.N.A.\2\                                                                                
 (part).....................                                                                                                                            
    excluding Fort Peck Indian                                                                                                                          
     Reservation                                                                                                                                        
Rosebud County                            ...........   1 hr.std.N.A.\2\                                                                                
 (part).......................                                                                                                                          
    excluding Northern Cheyenne Indian                                                                                                                  
     Reservation                                                                                                                                        
Sanders County                            ...........   1 hr.std.N.A.\2\                                                                                
 (part).......................                                                                                                                          
    excluding Flathead Indian                                                                                                                           
     Reservation                                                                                                                                        
Sheridan County                           ...........   1 hr.std.N.A.\2\                                                                                
 (part)......................                                                                                                                           
    excluding Fort Peck Indian                                                                                                                          
     Reservation                                                                                                                                        
Silver Bow County                         ...........   1 hr.std.N.A.\2\                                                                                
 ..........................                                                                                                                             
Stillwater County                         ...........   1 hr.std.N.A.\2\                                                                                
 ..........................                                                                                                                             
Sweet Grass County                        ...........   1 hr.std.N.A.\2\                                                                                
 .........................                                                                                                                              
Teton County                              ...........   1 hr.std.N.A.\2\                                                                                
 ...............................                                                                                                                        
Toole County                              ...........   1 hr.std.N.A.\2\                                                                                
 ...............................                                                                                                                        
Treasure County                           ...........   1 hr.std.N.A.\2\                                                                                
 ............................                                                                                                                           
Valley County                             ...........   1 hr.std.N.A.\2\                                                                                
 (part)........................                                                                                                                         
    excluding Fort Peck Indian                                                                                                                          
     Reservation                                                                                                                                        
Wheatland County                          ...........   1 hr.std.N.A.\2\                                                                                
 ...........................                                                                                                                            
Wibaux County                             ...........   1 hr.std.N.A.\2\                                                                                
 ..............................                                                                                                                         
Yellowstone County                        ...........   1 hr.std.N.A.\2\                                                                                
 (part)...................                                                                                                                              
    excluding Crow Indian Reservation                                                                                                                   
Yellowstone Natl Park                     ...........   1 hr.std.N.A.\2\                                                                                
 ......................                                                                                                                                 
Blackfeet Indian Reservation              ...........   1 hr.std.N.A.\2\                                                                                
 ...............                                                                                                                                        
    Glacier County (part)                                                                                                                               
         area inside Blackfeet                                                                                                                          
         Reservation                                                                                                                                    
    Pondera County (part)                                                                                                                               
        area inside Blackfeet                                                                                                                           
         Reservation                                                                                                                                    
Crow Indian Reservation                   ...........   1 hr.std.N.A.\2\                                                                                
 ....................                                                                                                                                   
    Bighorn County (part)                                                                                                                               
        area inside Crow Reservation                                                                                                                    
    Yellowstone (part)                                                                                                                                  
        area inside Crow Reservation                                                                                                                    
Flathead Indian Reservation               ...........   1 hr.std.N.A.\2\                                                                                
 ................                                                                                                                                       
    Flathead County (part)                                                                                                                              
        area inside Flathead Reservation                                                                                                                
    Lake County (part)                                                                                                                                  
        area inside Flathead Reservation                                                                                                                
    Missoula County (part)                                                                                                                              
        area inside Flathead Reservation                                                                                                                
    Sanders County (part)                                                                                                                               
        area inside Flathead Reservation                                                                                                                
Fort Belknap Indian Reservation           ...........   1 hr.std.N.A.\2\                                                                                
 ............                                                                                                                                           
    Blaine County (part)                                                                                                                                
        area inside Fort Belknap                                                                                                                        
         Reservation                                                                                                                                    
    Phillips County (part)                                                                                                                              

[[Page 31063]]

                                                                                                                                                        
        area inside Fort Belknap                                                                                                                        
         Reservation                                                                                                                                    
Fort Peck Indian Reservation              ...........   1 hr.std.N.A.\2\                                                                                
 ...............                                                                                                                                        
    Daniels County (part)                                                                                                                               
        area inside Fort Peck                                                                                                                           
         Reservation                                                                                                                                    
    Roosevelt County (part)                                                                                                                             
        area inside Fort Peck                                                                                                                           
         Reservation                                                                                                                                    
    Sheridan County (part)                                                                                                                              
        area inside Fort Peck                                                                                                                           
         Reservation                                                                                                                                    
    Valley County (part)                                                                                                                                
        area inside Fort Peck                                                                                                                           
         Reservation                                                                                                                                    
Northern Cheyenne Indian Reservation      ...........   1 hr.std.N.A.\2\                                                                                
 .......                                                                                                                                                
    Bighorn County (part)                                                                                                                               
        area inside Northern Cheyenne                                                                                                                   
         Reservation                                                                                                                                    
    Rosebud County (part)                                                                                                                               
        area inside Northern Cheyenne                                                                                                                   
         Reservation                                                                                                                                    
Rocky Boy Indian Reservation              ...........   1 hr.std.N.A.\2\                                                                                
 ...............                                                                                                                                        
    Chouteau County (part)                                                                                                                              
        area inside Rocky Boy                                                                                                                           
         Reservation                                                                                                                                    
    Hill County (part)                                                                                                                                  
        area inside Rocky Boy                                                                                                                           
         Reservation                                                                                                                                    
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    29. In Sec. 81.328, the table entitled ``Nebraska-Ozone'' is 
revised to read as follows:


Sec. 81.328  Nebraska.

* * * * * * *

                                                            Nebraska--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \2\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Adams County                                                                                                                                        
    Antelope County                                                                                                                                     
    Arthur County                                                                                                                                       
    Banner County                                                                                                                                       
    Blaine County                                                                                                                                       
    Boone County                                                                                                                                        
    Box Butte County                                                                                                                                    
    Boyd County                                                                                                                                         
    Brown County                                                                                                                                        
    Buffalo County                                                                                                                                      
    Burt County                                                                                                                                         
    Butler County                                                                                                                                       
    Cass County                                                                                                                                         
    Cedar County                                                                                                                                        
    Chase County                                                                                                                                        
    Cherry County                                                                                                                                       
    Cheyenne County                                                                                                                                     
    Clay County                                                                                                                                         
    Colfax County                                                                                                                                       
    Cuming County                                                                                                                                       
    Custer County                                                                                                                                       
    Dakota County                                                                                                                                       
    Dawes County                                                                                                                                        
    Dawson County                                                                                                                                       
    Deuel County                                                                                                                                        
    Dixon County                                                                                                                                        
    Dodge County                                                                                                                                        
    Douglas County                                                                                                                                      
    Dundy County                                                                                                                                        
    Fillmore County                                                                                                                                     
    Franklin County                                                                                                                                     
    Frontier County                                                                                                                                     
    Furnas County                                                                                                                                       
    Gage County                                                                                                                                         

[[Page 31064]]

                                                                                                                                                        
    Garden County                                                                                                                                       
    Garfield County                                                                                                                                     
    Gosper County                                                                                                                                       
    Grant County                                                                                                                                        
    Greeley County                                                                                                                                      
    Hall County                                                                                                                                         
    Hamilton County                                                                                                                                     
    Harlan County                                                                                                                                       
    Hayes County                                                                                                                                        
    Hitchcock County                                                                                                                                    
    Holt County                                                                                                                                         
    Hooker County                                                                                                                                       
    Howard County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Johnson County                                                                                                                                      
    Kearney County                                                                                                                                      
    Keith County                                                                                                                                        
    Keya Paha County                                                                                                                                    
    Kimball County                                                                                                                                      
    Knox County                                                                                                                                         
    Lancaster County                                                                                                                                    
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    Loup County                                                                                                                                         
    Madison County                                                                                                                                      
    McPherson County                                                                                                                                    
    Merrick County                                                                                                                                      
    Morrill County                                                                                                                                      
    Nance County                                                                                                                                        
    Nemaha County                                                                                                                                       
    Nuckolls County                                                                                                                                     
    Otoe County                                                                                                                                         
    Pawnee County                                                                                                                                       
    Perkins County                                                                                                                                      
    Phelps County                                                                                                                                       
    Pierce County                                                                                                                                       
    Platte County                                                                                                                                       
    Polk County                                                                                                                                         
    Red Willow County                                                                                                                                   
    Richardson County                                                                                                                                   
    Rock County                                                                                                                                         
    Saline County                                                                                                                                       
    Sarpy County                                                                                                                                        
    Saunders County                                                                                                                                     
    Scotts Bluff County                                                                                                                                 
    Seward County                                                                                                                                       
    Sheridan County                                                                                                                                     
    Sherman County                                                                                                                                      
    Sioux County                                                                                                                                        
    Stanton County                                                                                                                                      
    Thayer County                                                                                                                                       
    Thomas County                                                                                                                                       
    Thurston County                                                                                                                                     
    Valley County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wheeler County                                                                                                                                      
    York County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    30. In Sec. 81.329, the table entitled ``Nevada--Ozone'' is revised 
to read as follows:


Sec. 81.329  Nevada.

* * * * *

[[Page 31065]]



                                                             Nevada--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Reno Area...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Washoe County                                                                                                                                       
Rest of State...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Carson City                                                                                                                                         
    Churchill County                                                                                                                                    
    Clark County                                                                                                                                        
    Douglas County                                                                                                                                      
    Elko County                                                                                                                                         
    Esmeralda County                                                                                                                                    
    Eureka County                                                                                                                                       
    Humboldt County                                                                                                                                     
    Lander County                                                                                                                                       
    Lincoln County                                                                                                                                      
    Lyon County                                                                                                                                         
    Mineral County                                                                                                                                      
    Nye County                                                                                                                                          
    Pershing County                                                                                                                                     
    Storey County                                                                                                                                       
    White Pine County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    31. In Sec. 81.330, the table entitled ``New Hampshire-Ozone'' is 
revised to read as follows:


Sec. 81.330  New Hampshire.

* * * * *

                                                         New Hampshire--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Belknap County Area:                                                                                                                                    
    Belknap County......................  ...........  1 hr.std. N.A.\2\                                                                                
Boston-Lawrence-Worcester Area:                                                                                                                         
    Hillsborough County (part)..........     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Pelham Town, Amherst Town,                                                                                                                      
         Brookline Town, Hollis Town,                                                                                                                   
         Hudson Town, Litchfield Town,                                                                                                                  
         Merrimack Town, Milford Town,                                                                                                                  
         Mont Vernon Town, Nashua City,                                                                                                                 
         Wilton Town.                                                                                                                                   
    Rockingham County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Atkinson Town, Brentwood Town,                                                                                                                  
         Danville Town, Derry Town, E                                                                                                                   
         Kingston Town, Hampstead Town,                                                                                                                 
         Hampton Falls Town, Kensington                                                                                                                 
         Town, Kingston Town,                                                                                                                           
         Londonderry Town, Newton Town,                                                                                                                 
         Plaistow Town, Salem Town,                                                                                                                     
         Sandown Town, Seabrook Town,                                                                                                                   
         South Hampton Town, Windham                                                                                                                    
         Town.                                                                                                                                          
Cheshire County Area:                                                                                                                                   
    Cheshire County.....................  ...........  1 hr.std. N.A.\2\                                                                                
Manchester Area:                                                                                                                                        
    Hillsborough County (part)..........  ...........  1 hr.std. N.A.\2\                                                                                
        Antrim Town, Bedford Town,                                                                                                                      
         Bennington Town, Deering Town,                                                                                                                 
         Francestown Town, Goffstown                                                                                                                    
         Town, Greenfield Town,                                                                                                                         
         Greenville Town, Hancock Town,                                                                                                                 
         Hillsborough Town, Lyndeborough                                                                                                                
         Town, Manchester city, Mason                                                                                                                   
         Town, New Boston Town, New                                                                                                                     
         Ipswich Town, Petersborough                                                                                                                    
         Town, Sharon Town, Temple town,                                                                                                                
         Weare Town, Windsor Town.                                                                                                                      
    Merrimack County....................  ...........  1 hr.std. N.A.\2\                                                                                
    Rockingham County (part)............  ...........  1 hr.std. N.A.\2\                                                                                
        Auburn Town, Candia Town,                                                                                                                       
         Chester Town, Deerfield Town,                                                                                                                  
         Epping Town, Fremont Town,                                                                                                                     
         Northwood Town, Nottingham                                                                                                                     
         Town, Raymond Town.                                                                                                                            
Portsmouth-Dover-Rochester Area:                                                                                                                        
    Rockingham County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 

[[Page 31066]]

                                                                                                                                                        
        Exeter Town, Greenland Town,                                                                                                                    
         Hampton Town, New Castle Town,                                                                                                                 
         Newfields Town, Newington Town,                                                                                                                
         Newmarket Town, North Hampton                                                                                                                  
         Town, Portsmouth city, Rye                                                                                                                     
         Town, Stratham Town.                                                                                                                           
    Strafford County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Sullivan County Area:                                                                                                                                   
                                                                                                                                                        
    Sullivan County.....................  ...........  1 hr.std. N.A.\2\                                                                                
AQCR 107 Androscoggin Valley Interstate:                                                                                                                
    Coos County.........................  ...........  1 hr.std. N.A.\2\                                                                                
AQCR 149 Central New Hampshire                                                                                                                          
 Interstate:                                                                                                                                            
    Carroll County......................  ...........  1 hr.std. N.A.\2\                                                                                
    Grafton County......................  ...........  1 hr.std. N.A.\2\                                                                                
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    32 In Sec. 81.331, the table entitled ``New Jersey-Ozone'' is 
revised to read as follows:


Sec. 81.331  New Jersey.

* * * * *

                                                           New Jersey--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allentown-Bethlehem Easton Area:                                                                                                                        
    Warren County.......................  ...........  1 hr.std. N.A.\2\                                                                                
Atlantic City Area:                                                                                                                                     
    Atlantic County.....................  ...........  1 hr.std. N.A.\2\                                                                                
    Cape May County.....................  ...........  1 hr.std. N.A.\2\                                                                                
New York-N. New Jersey-Long Island Area:                                                                                                                
    Bergen County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Essex County........................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Hudson County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Hunterdon County....................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Middlesex County....................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Monmouth County.....................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Morris County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Ocean County........................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Passaic County......................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Somerset County.....................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Sussex County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
    Union County........................     11/15/90  Nonatainment.............................     11/15/90  Severe-17.                               
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Burlington County...................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
    Camden County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
    Cumberland County...................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
    Gloucester County...................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
    Mercer County.......................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
    Salem County........................     11/15/90  Nonatainment.............................     11/15/90  Severe-15.                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1-hour standard Not Applicable.                                                                                                                     

* * * * *
    33. In Sec. 81.332, the table entitled ``New Mexico-Ozone'' is 
revised to read as follows:


Sec. 81.332  New Mexico.

* * * * *

                                                           New Mexico--Ozone (1-hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 012 New Mexico-Southern Border       ...........  1 hr.std.N.A.\2\                           ...........  .........................................
 Intrastate.                                                                                                                                            

[[Page 31067]]

                                                                                                                                                        
    Grant County                                                                                                                                        
    Hidalgo County                                                                                                                                      
    Luna County                                                                                                                                         
AQCR 014 Four Corners Interstate........  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
        see 40 CFR 81.121                                                                                                                               
    McKinley County (part)                                                                                                                              
    Rio Arriba County (part)                                                                                                                            
    San Juan County                                                                                                                                     
    Sandoval County (part)                                                                                                                              
    Valencia County (part)                                                                                                                              
AQCR 152 Albuquerque-Mid Rio Grande       ...........  1 hr.std.N.A.\2\                           ...........  .........................................
 Intrastate.                                                                                                                                            
    Bernalillo County (part)                                                                                                                            
AQCR 152 Albuquerque-Mid Rio Grande.....  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Sandoval County (part)                                                                                                                              
        see 40 CFR 81.83                                                                                                                                
    Valencia County                                                                                                                                     
        see 40 CFR 81.83                                                                                                                                
AQCR 153 El Paso-Las Cruces-Alamogordo..      7/12/95  Nonattainment............................      7/12/95  Marginal                                 
    Dona Ana County (part)-(Sunland Park                                                                                                                
     Area)                                                                                                                                              
    The area bounded by the New Mexico-                                                                                                                 
     Texas                                                                                                                                              
    State line on the east, the New                                                                                                                     
     Mexico-Mexico internationalline on                                                                                                                 
     the south, Range 3E-Range 2E, line                                                                                                                 
     on the west, and the N3200 latitude                                                                                                                
     line on the north.                                                                                                                                 
    Dona Ana County (remainder of)......  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Lincoln County......................  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Otero County........................  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Sierra County.......................  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
AQCR 154 Northeastern Plains Intrastate.  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Colfax County                                                                                                                                       
    Guadalupe County                                                                                                                                    
    Harding County                                                                                                                                      
    Mora County                                                                                                                                         
    San Miguel County                                                                                                                                   
    Torrance County                                                                                                                                     
    Union County                                                                                                                                        
AQCR 155 Pecos-Permian Basin Intrastate.  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Chaves County                                                                                                                                       
    Curry County                                                                                                                                        
    De Baca County                                                                                                                                      
    Eddy County                                                                                                                                         
    Lea County                                                                                                                                          
    Quay County                                                                                                                                         
    Roosevelt County                                                                                                                                    
AQCR 156 SW Mountains-Augustine Plains..  ...........  1 hr.std.N.A.\2\                           ...........  .........................................
    Catron County                                                                                                                                       
    Cibola County                                                                                                                                       
    McKinley County (part)                                                                                                                              
        see 40 CFR 81.241                                                                                                                               
    Socorro County                                                                                                                                      
    Valencia County (part)                                                                                                                              
        see 40 CFR 81.241                                                                                                                               
AQCR 157 Upper Rio Grande Valley          ...........  1 hr.std.N.A.\2\                           ...........  .........................................
 Intrastate.                                                                                                                                            
    Los Alamos County                                                                                                                                   
    Rio Arriba County (part)                                                                                                                            
        see 40 CFR 81.239                                                                                                                               
    Santa Fe County                                                                                                                                     
    Taos County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    34. In Sec. 81.333, the table entitled ``New York-Ozone'' is 
revised to read as follows:


Sec. 81.333  New York.

* * * * *

[[Page 31068]]



                                                            New York--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date \2\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Albany-Schenectady-Troy Area:                                                                                                                           
    Albany County.......................  ...........  1 hr. std. N.A. \3\                                                                              
    Greene County.......................  ...........  1 hr. std. N.A. \3\                                                                              
    Montgomery County...................  ...........  1 hr. std. N.A. \3\                                                                              
    Rensselaer County...................  ...........  1 hr. std. N.A. \3\                                                                              
    Saratoga County.....................  ...........  1 hr. std. N.A. \3\                                                                              
    Schenectady County..................  ...........  1 hr. std. N.A. \3\                                                                              
Buffalo-Niagara Falls Area:                                                                                                                             
    Erie County.........................  ...........  1 hr. std. N.A. \3\                                                                              
    Niagara County......................  ...........  1 hr. std. N.A. \3\                                                                              
Essex County Area:                                                                                                                                      
    Essex County (part).................  ...........  1 hr. std. N.A. \3\                                                                              
        The portion of Whiteface                                                                                                                        
         Mountain above 4500 feet in                                                                                                                    
         elevation in Essex County                                                                                                                      
Jefferson County Area:                                                                                                                                  
    Jefferson County....................  ...........  1 hr. std. N.A. \3\                                                                              
New York-Northern New Jersey-Long Island                                                                                                                
 Area:                                                                                                                                                  
    Bronx County........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Kings County........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Nassau County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    New York County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Orange County (part)................      1/15/92  Nonattainment............................      1/15/92  Severe-17.                               
        Blooming Grove, Chester,                                                                                                                        
         Highlands, Monroe, Tuxedo,                                                                                                                     
         Warwick, and Woodbury                                                                                                                          
    Queens County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Richmond County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Rockland County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Suffolk County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Westchester County..................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Poughkeepsie Area:                                                                                                                                      
    Dutchess County.....................       1/6/92  Nonattainment............................      11/7/94  Moderate.                                
    Orange County (remainder)...........  4/21/94 \2\  Nonattainment............................  11/7/94 \2\  Moderate.                                
    Putnam County.......................      1/15/92  Nonattainment............................      11/7/94  Moderate.                                
AQCR 158 Central New York Intrastate      ...........  1 hr. std. N.A. \3\                                                                              
 (Remainder of).                                                                                                                                        
    Cayuga County                                                                                                                                       
    Cortland County                                                                                                                                     
    Herkimer County                                                                                                                                     
    Lewis County                                                                                                                                        
    Madison County                                                                                                                                      
    Oneida County                                                                                                                                       
    Onondaga County                                                                                                                                     
    Oswego County                                                                                                                                       
AQCR 159 Champlain Valley Interstate      ...........  1 hr. std. N.A. \3\                                                                              
 (Remainder of).                                                                                                                                        
    Clinton County                                                                                                                                      
    Essex County                                                                                                                                        
    Franklin County                                                                                                                                     
    Hamilton County                                                                                                                                     
    St. Lawrence County                                                                                                                                 
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
AQCR 160 Genessee-Finger Lakes            ...........  1 hr. std. N.A. \3\                                                                              
 Intrastate.                                                                                                                                            
    Genesee County                                                                                                                                      
    Livingston County                                                                                                                                   
    Monroe County                                                                                                                                       
    Ontario County                                                                                                                                      
    Orleans County                                                                                                                                      
    Seneca County                                                                                                                                       
    Wayne County                                                                                                                                        
    Wyoming County                                                                                                                                      
    Yates County                                                                                                                                        
AQCR 161 Hudson Valley Intrastate         ...........  1 hr. std. N.A. \3\                                                                              
 (Remainder of).                                                                                                                                        
    Columbia County                                                                                                                                     
    Fulton County                                                                                                                                       
    Schoharie County                                                                                                                                    
    Ulster County                                                                                                                                       
AQCR 163 Southern Tier East Intrastate..  ...........  1 hr. std. N.A. \3\                                                                              
    Broome County                                                                                                                                       
    Chenango County                                                                                                                                     
    Delaware County                                                                                                                                     
    Otsego County                                                                                                                                       

[[Page 31069]]

                                                                                                                                                        
    Sullivan County                                                                                                                                     
    Tioga County                                                                                                                                        
AQCR 164 Southern Tier West Intrastate..  ...........  1 hr. std. N.A. \3\                                                                              
    Allegany County                                                                                                                                     
    Cattaraugus County                                                                                                                                  
    Chautauqua County                                                                                                                                   
    Chemung County                                                                                                                                      
    Schuyler County                                                                                                                                     
    Steuben County                                                                                                                                      
    Tompkins County                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ However, the effective date is November 15, 1990, for purposes of determining the scope of a ``covered area'' under section 211 (k)(10)(D), opt-in  
  under section 211 (k)(6), and the baseline determination of the 15% reduction in volatile organic compounds under section 182 (b)(1).                 
\3\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    35. In Sec. 81.334, the table entitled ``North Carolina-Ozone'' is 
revised to read as follows:


Sec. 81.334  North Carolina

* * * * *

                                                         North Carolina--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Alamance County                                                                                                                                     
    Alexander County                                                                                                                                    
    Alleghany County                                                                                                                                    
    Anson County                                                                                                                                        
    Ashe County                                                                                                                                         
    Avery County                                                                                                                                        
    Beaufort County                                                                                                                                     
    Bertie County                                                                                                                                       
    Bladen County                                                                                                                                       
    Brunswick County                                                                                                                                    
    Buncombe County                                                                                                                                     
    Burke County                                                                                                                                        
    Cabarrus County                                                                                                                                     
    Caldwell County                                                                                                                                     
    Camden County                                                                                                                                       
    Carteret County                                                                                                                                     
    Caswell County                                                                                                                                      
    Catawba County                                                                                                                                      
    Chatham County                                                                                                                                      
    Cherokee County                                                                                                                                     
    Chowan County                                                                                                                                       
    Clay County                                                                                                                                         
    Cleveland County                                                                                                                                    
    Columbus County                                                                                                                                     
    Craven County                                                                                                                                       
    Cumberland County                                                                                                                                   
    Currituck County                                                                                                                                    
    Dare County                                                                                                                                         
    Davidson County                                                                                                                                     
    Davie County                                                                                                                                        
    Durham County                                                                                                                                       
    Duplin County                                                                                                                                       
    Edgecombe County                                                                                                                                    
    Forsyth County                                                                                                                                      
    Franklin County                                                                                                                                     
    Gaston County                                                                                                                                       
    Gates County                                                                                                                                        
    Graham County                                                                                                                                       
    Granville County                                                                                                                                    
    Greene County                                                                                                                                       
    Guilford County                                                                                                                                     
    Halifax County                                                                                                                                      

[[Page 31070]]

                                                                                                                                                        
    Harnett County                                                                                                                                      
    Haywood County                                                                                                                                      
    Henderson County                                                                                                                                    
    Hertford County                                                                                                                                     
    Hoke County                                                                                                                                         
    Hyde County                                                                                                                                         
    Iredell County                                                                                                                                      
    Jackson County                                                                                                                                      
    Johnston County                                                                                                                                     
    Jones County                                                                                                                                        
    Lee County                                                                                                                                          
    Lenoir County                                                                                                                                       
    Lincoln County                                                                                                                                      
    McDowell County                                                                                                                                     
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Martin County                                                                                                                                       
    Mecklenburg County                                                                                                                                  
    Mitchell County                                                                                                                                     
    Montgomery County                                                                                                                                   
    Moore County                                                                                                                                        
    Nash County                                                                                                                                         
    New Hanover County                                                                                                                                  
    Northhampton County                                                                                                                                 
    Onslow County                                                                                                                                       
    Orange County                                                                                                                                       
    Pamlico County                                                                                                                                      
    Pasquotank County                                                                                                                                   
    Pender County                                                                                                                                       
    Perquimans County                                                                                                                                   
    Person County                                                                                                                                       
    Pitt County                                                                                                                                         
    Polk County                                                                                                                                         
    Randolph County                                                                                                                                     
    Richmond County                                                                                                                                     
    Robeson County                                                                                                                                      
    Rockingham County                                                                                                                                   
    Rowan County                                                                                                                                        
    Rutherford County                                                                                                                                   
    Sampson County                                                                                                                                      
    Scotland County                                                                                                                                     
    Stanly County                                                                                                                                       
    Stokes County                                                                                                                                       
    Surry County                                                                                                                                        
    Swain County                                                                                                                                        
    Transylvania County                                                                                                                                 
    Tyrrell County                                                                                                                                      
    Union County                                                                                                                                        
    Vance County                                                                                                                                        
    Wake County                                                                                                                                         
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Watauga County                                                                                                                                      
    Wayne County                                                                                                                                        
    Wilkes County                                                                                                                                       
    Wilson County                                                                                                                                       
    Yadkin County                                                                                                                                       
    Yancey County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    36. In Sec. 81.335, the table entitled ``North Dakota--Ozone'' is 
revised to read as follows:


Sec. 81.335  North Dakota.

* * * * *

[[Page 31071]]



                                                          North Dakota--Ozone (1-hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 130 Metropolitan Fargo-Moorhead      ...........  1 hr.std.N.A.\2\                                                                                 
 Interstate.                                                                                                                                            
    Cass County                                                                                                                                         
Rest of State, AQCR 172.................  ...........  1 hr.std.N.A.\2\                                                                                 
    Adams County                                                                                                                                        
    Barnes County                                                                                                                                       
    Benson County                                                                                                                                       
    Billings County                                                                                                                                     
    Bottineau County                                                                                                                                    
    Bowman County                                                                                                                                       
    Burke County                                                                                                                                        
    Burleigh County                                                                                                                                     
    Cavalier County                                                                                                                                     
    Dickey County                                                                                                                                       
    Divide County                                                                                                                                       
    Dunn County                                                                                                                                         
    Eddy County                                                                                                                                         
    Emmons County                                                                                                                                       
    Foster County                                                                                                                                       
    Golden Valley County                                                                                                                                
    Grand Forks County                                                                                                                                  
    Grant County                                                                                                                                        
    Griggs County                                                                                                                                       
    Hettinger County                                                                                                                                    
    Kidder County                                                                                                                                       
    La Moure County                                                                                                                                     
    Logan County                                                                                                                                        
    McHenry County                                                                                                                                      
    McIntosh County                                                                                                                                     
    McKenzie County                                                                                                                                     
    McLean County                                                                                                                                       
    Mercer County                                                                                                                                       
    Morton County                                                                                                                                       
    Mountrail County                                                                                                                                    
    Nelson County                                                                                                                                       
    Oliver County                                                                                                                                       
    Pembina County                                                                                                                                      
    Pierce County                                                                                                                                       
    Ramsey County                                                                                                                                       
    Ransom County                                                                                                                                       
    Renville County                                                                                                                                     
    Richland County                                                                                                                                     
    Rolette County                                                                                                                                      
    Sargent County                                                                                                                                      
    Sheridan County                                                                                                                                     
    Sioux County                                                                                                                                        
    Slope County                                                                                                                                        
    Stark County                                                                                                                                        
    Steele County                                                                                                                                       
    Stutsman County                                                                                                                                     
    Towner County                                                                                                                                       
    Traill County                                                                                                                                       
    Walsh County                                                                                                                                        
    Ward County                                                                                                                                         
    Wells County                                                                                                                                        
    Williams County                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    37. In Sec. 81.336, the table entitled ``Ohio-Ozone'' is revised to 
read as follows:


Sec. 81.336  Ohio.

* * * * *

[[Page 31072]]



                                                              Ohio--Ozone (1-Hour standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Canton Are:                                                                                                                                             
    Stark County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Cincinnati-Hamilton Area:                                                                                                                               
    Butler County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Clermont County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Hamilton County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Warren County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Cleveland-Akron-Lorain Area:                                                                                                                            
    Ashtabula County....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Cuyahoga County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Geauga County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Lake County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Lorain County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Medina County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Portage County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Summit County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Clinton County Area:                                                                                                                                    
    Clinton County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Columbiana County Area:                                                                                                                                 
    Columbiana County...................  ...........  1 hr.std.N.A.\2\                                                                                 
Columbus Area:                                                                                                                                          
    Delaware County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Franklin County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Licking County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Dayton-Springfield Area:                                                                                                                                
    Clark County........................       7/5/95  Attainment                                                                                       
    Greene County.......................       7/5/95  Attainment                                                                                       
    Miami County........................       7/5/95  Attainment                                                                                       
    Montgomery County...................       7/5/95  Attainment                                                                                       
Preble County Area:                                                                                                                                     
    Preble County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Steubenville Area:                                                                                                                                      
    Jefferson County....................  ...........  1 hr.std.N.A.\2\                                                                                 
Toledo Area:                                                                                                                                            
    Lucas County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Wood County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Youngstown-Warren-Sharon Area:                                                                                                                          
    Mahoning County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Trumbull County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
Adams County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Allen County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Ashland County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Athens County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Auglaize County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Belmont County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Brown County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Carroll County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Champaign County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Coshocton County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Crawford County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Darke County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Defiance County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Erie County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Fairfield County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fayette County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fulton County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Gallia County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Guernsey County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hancock County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hardin County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Harrison County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Henry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Highland County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Hocking County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Holmes County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Huron County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Knox County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Lawrence County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Logan County............................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31073]]

                                                                                                                                                        
Madison County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marion County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Meigs County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Mercer County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Monroe County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Morgan County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Morrow County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Muskingum County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Noble County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Ottawa County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Paulding County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Perry County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pickaway County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Pike County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Putnam County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Richland County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Ross County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Sandusky County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Scioto County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Seneca County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Shelby County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Tuscarawas County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Union County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Van Wert County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Vinton County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Washington County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Wayne County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Williams County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wyandot County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    38. In Sec. 81.337, the table entitled ``Oklahoma-Ozone'' is 
revised to read as follows:


Sec. 81.337  Oklahoma.

* * * * *

                                                            Oklahoma--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designated                                            Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 017 Metropolitan Fort Smith          ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Adair County                                                                                                                                        
    Cherokee County                                                                                                                                     
    Le Flore County                                                                                                                                     
    Sequoyah County                                                                                                                                     
AQCR 022 Shreveport-Texarkana-Tyler       ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    McCurtain County                                                                                                                                    
AQCR 184 Central Oklahoma Intrastate      ...........  1 hr.std.N.A. \2\                                                                                
 (part).                                                                                                                                                
    Cleveland County                                                                                                                                    
    Oklahoma County                                                                                                                                     
AQCR 184 Central Oklahoma Intrastate      ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Canadian County                                                                                                                                     
    Grady County                                                                                                                                        
    Kingfisher County                                                                                                                                   
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    McClain County                                                                                                                                      
    Pottawatomie County                                                                                                                                 
AQCR 185 North Central Oklahoma           ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Garfield County                                                                                                                                     
    Grant County                                                                                                                                        
    Kay County                                                                                                                                          
    Noble County                                                                                                                                        
    Payne County                                                                                                                                        
AQCR 186 Northeastern Oklahoma            ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Craig County                                                                                                                                        

[[Page 31074]]

                                                                                                                                                        
    Creek County                                                                                                                                        
    Delaware County                                                                                                                                     
    Mayes County                                                                                                                                        
    Muskogee County                                                                                                                                     
    Nowata County                                                                                                                                       
    Okmulgee County                                                                                                                                     
    Osage County                                                                                                                                        
    Ottawa County                                                                                                                                       
    Pawnee County                                                                                                                                       
    Rogers County                                                                                                                                       
    Tulsa County                                                                                                                                        
    Wagoner County                                                                                                                                      
    Washington County                                                                                                                                   
AQCR 187 Northwestern Oklahoma            ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Alfalfa County                                                                                                                                      
    Beaver County                                                                                                                                       
    Blaine County                                                                                                                                       
    Cimarron County                                                                                                                                     
    Custer County                                                                                                                                       
    Dewey County                                                                                                                                        
    Ellis County                                                                                                                                        
    Harper County                                                                                                                                       
    Major County                                                                                                                                        
    Roger Mills County                                                                                                                                  
    Texas County                                                                                                                                        
    Woods County                                                                                                                                        
    Woodward County                                                                                                                                     
AQCR 188 Southeastern Oklahoma            ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Atoka County                                                                                                                                        
    Bryan County                                                                                                                                        
    Carter County                                                                                                                                       
    Choctaw County                                                                                                                                      
    Coal County                                                                                                                                         
    Garvin County                                                                                                                                       
    Haskell County                                                                                                                                      
    Hughes County                                                                                                                                       
    Johnston County                                                                                                                                     
    Latimer County                                                                                                                                      
    Love County                                                                                                                                         
    Marshall County                                                                                                                                     
    McIntosh County                                                                                                                                     
    Murray County                                                                                                                                       
    Okfuskee County                                                                                                                                     
    Pittsburg County                                                                                                                                    
    Pontotoc County                                                                                                                                     
    Pushmataha County                                                                                                                                   
    Seminole County                                                                                                                                     
AQCR 189 Southwestern Oklahoma            ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate.                                                                                                                                            
    Beckham County                                                                                                                                      
    Caddo County                                                                                                                                        
    Comanche County                                                                                                                                     
    Cotton County                                                                                                                                       
    Greer County                                                                                                                                        
    Harmon County                                                                                                                                       
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Kiowa County                                                                                                                                        
    Stephens County                                                                                                                                     
    Tillman County                                                                                                                                      
    Washita County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    39. In Sec. 81.338, the table entitled ``Oregon--Ozone'' is revised 
to read as follows:


Sec. 81.338  Oregon.

* * * * *

[[Page 31075]]



                                                             Oregon-Ozone (1-hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Portland-Vancouver AQMA Area:                                                                                                                           
    Air Quality Maintenance Area                                                                                                                        
        Clackamas County (part).........  ...........  1 hr.std.N.A. \2\                                                                                
        Multnomah County (part).........  ...........  1 hr.std.N.A. \2\                                                                                
        Washington County (part)........  ...........  1 hr.std.N.A. \2\                                                                                
Salem Area:                                                                                                                                             
    Salem Area Transportation Study                                                                                                                     
        Marion County (part)............  ...........  1 hr.std.N.A. \2\                                                                                
        Polk County (part)..............  ...........  1 hr.std.N.A. \2\                                                                                
AQCR 190 Central Oregon Intrastate        ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Crook County                                                                                                                                        
    Deschutes County                                                                                                                                    
    Hood River County                                                                                                                                   
    Jefferson County                                                                                                                                    
    Klamath County                                                                                                                                      
    Lake County                                                                                                                                         
    Sherman County                                                                                                                                      
    Wasco County                                                                                                                                        
AQCR 191 Eastern Oregon Intrastate......  ...........  1 hr.std.N.A. \2\                                                                                
    Baker County                                                                                                                                        
    Gilliam County                                                                                                                                      
    Grant County                                                                                                                                        
    Harney County                                                                                                                                       
    Malheur County                                                                                                                                      
    Morrow County                                                                                                                                       
    Umatilla County                                                                                                                                     
    Union County                                                                                                                                        
    Wallowa County                                                                                                                                      
    Wheeler County                                                                                                                                      
AQCR 192 Northwest Oregon Intrastate....  ...........  1 hr.std.N.A. \2\                                                                                
    Clatsop County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Tillamook County                                                                                                                                    
AQCR 193 Portland Interstate (part).....  ...........  1 hr.std.N.A. \2\                                                                                
    Lane County (part)                                                                                                                                  
        Eugene Springfield Air Quality                                                                                                                  
         Maintenance Area                                                                                                                               
AQCR 193 Portland Interstate (Remainder   ...........  1 hr.std.N.A. \2\                                                                                
 of).                                                                                                                                                   
    Benton County                                                                                                                                       
    Clackamas County (part)                                                                                                                             
        Remainder of county                                                                                                                             
    Columbia County                                                                                                                                     
    Lane County (part)                                                                                                                                  
        Remainder of county                                                                                                                             
    Linn County                                                                                                                                         
    Marion County (part)                                                                                                                                
        area outside the Salem Area                                                                                                                     
            Transportation Study.                                                                                                                       
    Multnomah County (part)                                                                                                                             
        Remainder of county                                                                                                                             
    Polk County (part)                                                                                                                                  
                                                                                                                                                        
        area outside the Salem Area                                                                                                                     
            Transportation Study                                                                                                                        
    Washington County (part)                                                                                                                            
        Remainder of county                                                                                                                             
    Yamhill County                                                                                                                                      
AQCR 194 Southwest Oregon Intrastate                                                                                                                    
 (part)                                                                                                                                                 
    Jackson County (part)                                                                                                                               
        Medford-Ashland Air Quality       ...........  1 hr.std.N.A. \2\                                                                                
         Maintenance Area.                                                                                                                              
AQCR 194 Southwest Oregon Intrastate      ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Coos County                                                                                                                                         
    Curry County                                                                                                                                        
    Douglas County                                                                                                                                      
    Jackson County (part)                                                                                                                               
        Remainder of county                                                                                                                             
    Josephine County                                                                                                                                    
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *

[[Page 31076]]

    40. In Sec. 81.339, the table entitled ``Pennsylvania-Ozone'' is 
revised to read as follows:


Sec. 81.339  Pennsylvania.

* * * * *

                                                          Pennsylvania--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allentown-Bethlehem-Easton Area:                                                                                                                        
    Carbon County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Lehigh County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Northampton County..................  ...........  1 hr.std.N.A.\3\                                                                                 
Altoona Area:                                                                                                                                           
    Blair County........................  ...........  1 hr.std.N.A.\3\                                                                                 
Crawford County Area:                                                                                                                                   
    Crawford County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
    Erie Area:..........................                                                                                                                
    Erie County.........................  ...........  1 hr.std.N.A.\3\                                                                                 
Franklin County Area:                                                                                                                                   
    Franklin County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
Greene County Area:                                                                                                                                     
    Greene County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
Harrisburg-Lebanon-Carlisle Area:                                                                                                                       
    Cumberland County...................  ...........  1 hr.std.N.A.\3\                                                                                 
    Dauphin County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Lebanon County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Perry County........................  ...........  1 hr.std.N.A.\3\                                                                                 
Johnstown Area:                                                                                                                                         
    Cambria County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Somerset County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
Juniata County Area:                                                                                                                                    
    Juniata County......................  ...........  1 hr.std.N.A.\3\                                                                                 
Lancaster Area:                                                                                                                                         
    Lancaster County....................     11/15/90  Nonattainment                                 11/15/90  Marginal.                                
    Lawrence County Area:...............                                                                                                                
    Lawrence County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
Northumberland County Area:                                                                                                                             
    Northumberland County...............  ...........  1 hr.std.N.A.\3\                                                                                 
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Bucks County........................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Chester County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Delaware County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Montgomery County...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Philadelphia County.................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Pike County Area:                                                                                                                                       
    Pike County.........................  ...........  1 hr.std.N.A.\3\                                                                                 
Pittsburgh-Beaver Valley Area:                                                                                                                          
    Allegheny County....................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Armstrong County....................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Beaver County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Butler County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Fayette County......................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Washington County...................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
    Westmoreland County.................     11/15/90  Nonattainment............................     11/15/90  Moderate \2\                             
Reading Area:                                                                                                                                           
    Berks County........................  ...........  1 hr.std.N.A.\3\                                                                                 
Schuylkill County Area:                                                                                                                                 
    Schuylkill County...................  ...........  1 hr.std.N.A.\3\                                                                                 
Scranton-Wilkes-Barre Area:                                                                                                                             
    Columbia County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
    Lackawanna County...................  ...........  1 hr.std.N.A.\3\                                                                                 
    Luzerne County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Monroe County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Wyoming County......................  ...........  1 hr.std.N.A.\3\                                                                                 
Snyder County Area:                                                                                                                                     
    Snyder County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
Susquehanna County Area:                                                                                                                                
    Susquehanna County..................  ...........  1 hr.std.N.A.\3\                                                                                 
Warren County Area:                                                                                                                                     
    Warren County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
Wayne County Area:                                                                                                                                      
    Wayne County........................  ...........  1 hr.std.N.A.\3\                                                                                 
York Area:                                                                                                                                              

[[Page 31077]]

                                                                                                                                                        
    Adams County........................  ...........  1 hr.std.N.A.\3\                                                                                 
    York County.........................  ...........  1 hr.std.N.A.\3\                                                                                 
Youngstown-Warren-Sharon Area:                                                                                                                          
    Mercer County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
AQCR 151 NE Pennsylvania Intrastate                                                                                                                     
 (Remainder of):                                                                                                                                        
    Bradford County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
    Sullivan County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
    Tioga County........................  ...........  1 hr.std.N.A.\3\                                                                                 
AQCR 178 NW Pennsylvania Interstate                                                                                                                     
 (Remainder of):                                                                                                                                        
    Cameron County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Clarion County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Clearfield County...................  ...........  1 hr.std.N.A.\3\                                                                                 
    Elk County..........................  ...........  1 hr.std.N.A.\3\                                                                                 
    Forest County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Jefferson County....................  ...........  1 hr.std.N.A.\3\                                                                                 
    McKean County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Potter County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Venango County......................  ...........  1 hr.std.N.A.\3\                                                                                 
AQCR 195 Central Pennsylvania Intrastate                                                                                                                
 (Remainder of):                                                                                                                                        
    Bedford County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Centre County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Clinton County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Fulton County.......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Huntingdon County...................  ...........  1 hr.std.N.A.\3\                                                                                 
    Lycoming County.....................  ...........  1 hr.std.N.A.\3\                                                                                 
    Mifflin County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Montour County......................  ...........  1 hr.std.N.A.\3\                                                                                 
    Union County........................  ...........  1 hr.std.N.A.\3\                                                                                 
AQCR 197 SW Pennsylvania Intrastate                                                                                                                     
 (Remainder of):                                                                                                                                        
    Indiana County......................  ...........  1 hr.std.N.A.\3\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ Attainment date extended to 11/15/97.                                                                                                               
\3\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    41. In Sec. 81.340, the table entitled ``Rhode Island-Ozone'' is 
revised to read as follows:


Sec. 81.340  Rhode Island.

* * * * *

                                                          Rhode Island--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Providence (all of RI) Area:                                                                                                                            
    Bristol County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kent County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Newport County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Providence County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Washington County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

* * * * *
    42. In Sec. 81.341, the table entitled ``South Carolina--Ozone 
(Q<INF>3</INF>)'' is revised to read as follows:


Sec. 81.341  South Carolina.

* * * * *

                                                         South Carolina-Ozone (1-hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Abbeville County                                                                                                                                    
    Aiken County                                                                                                                                        

[[Page 31078]]

                                                                                                                                                        
    Allendale County                                                                                                                                    
    Anderson County                                                                                                                                     
    Bamberg County                                                                                                                                      
    Barnwell County                                                                                                                                     
    Beaufort County                                                                                                                                     
    Berkeley County                                                                                                                                     
    Calhoun County                                                                                                                                      
    Charleston County                                                                                                                                   
    Cherokee County                                                                                                                                     
    Chester County                                                                                                                                      
    Chesterfield County                                                                                                                                 
    Clarendon County                                                                                                                                    
    Colleton County                                                                                                                                     
    Darlington County                                                                                                                                   
    Dillon County                                                                                                                                       
    Dorchester County                                                                                                                                   
    Edgefield County                                                                                                                                    
    Fairfield County                                                                                                                                    
    Florence County                                                                                                                                     
    Georgetown County                                                                                                                                   
    Greenville County                                                                                                                                   
    Greenwood County                                                                                                                                    
    Hampton County                                                                                                                                      
    Horry County                                                                                                                                        
    Jasper County                                                                                                                                       
    Kershaw County                                                                                                                                      
    Lancaster County                                                                                                                                    
    Laurens County                                                                                                                                      
    Lee County                                                                                                                                          
    Lexington County                                                                                                                                    
    Marion County                                                                                                                                       
    Marlboro County                                                                                                                                     
    McCormick County                                                                                                                                    
    Newberry County                                                                                                                                     
    Oconee County                                                                                                                                       
    Orangeburg County                                                                                                                                   
    Pickens County                                                                                                                                      
    Richland County                                                                                                                                     
    Saluda County                                                                                                                                       
    Spartanburg County                                                                                                                                  
    Sumter County                                                                                                                                       
    Union County                                                                                                                                        
    Williamsburg County                                                                                                                                 
    York County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    43. In Sec. 81.342, the table entitled ``South Dakota-Ozone'' is 
revised to read as follows:


Sec. 81.342  South Dakota.

* * * * *

                                                          South Dakota--Ozone (1-hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Aurora County                                                                                                                                       
    Beadle County                                                                                                                                       
    Bennett County                                                                                                                                      
    Bon Homme County                                                                                                                                    
    Brookings County                                                                                                                                    
    Brown County                                                                                                                                        
    Brule County                                                                                                                                        
    Buffalo County                                                                                                                                      
    Butte County                                                                                                                                        
    Campbell County                                                                                                                                     

[[Page 31079]]

                                                                                                                                                        
    Charles Mix County                                                                                                                                  
    Clark County                                                                                                                                        
    Clay County                                                                                                                                         
    Codington County                                                                                                                                    
    Corson County                                                                                                                                       
    Custer County                                                                                                                                       
    Davison County                                                                                                                                      
    Day County                                                                                                                                          
    Deuel County                                                                                                                                        
    Dewey County                                                                                                                                        
    Douglas County                                                                                                                                      
    Edmunds County                                                                                                                                      
    Fall River County                                                                                                                                   
    Faulk County                                                                                                                                        
    Grant County                                                                                                                                        
    Gregory County                                                                                                                                      
    Haakon County                                                                                                                                       
    Hamlin County                                                                                                                                       
    Hand County                                                                                                                                         
    Hanson County                                                                                                                                       
    Harding County                                                                                                                                      
    Hughes County                                                                                                                                       
    Hutchinson County                                                                                                                                   
    Hyde County                                                                                                                                         
    Jackson County                                                                                                                                      
    Jerauld County                                                                                                                                      
    Jones County                                                                                                                                        
    Kingsbury County                                                                                                                                    
    Lake County                                                                                                                                         
    Lawrence County                                                                                                                                     
    Lincoln County                                                                                                                                      
    Lyman County                                                                                                                                        
    Marshall County                                                                                                                                     
    McCook County                                                                                                                                       
    McPherson County                                                                                                                                    
    Meade County                                                                                                                                        
    Mellette County                                                                                                                                     
    Miner County                                                                                                                                        
    Minnehaha County                                                                                                                                    
    Moody County                                                                                                                                        
    Pennington County                                                                                                                                   
    Perkins County                                                                                                                                      
    Potter County                                                                                                                                       
    Roberts County                                                                                                                                      
    Sanborn County                                                                                                                                      
    Shannon County                                                                                                                                      
    Spink County                                                                                                                                        
    Stanley County                                                                                                                                      
    Sully County                                                                                                                                        
    Todd County                                                                                                                                         
    Tripp County                                                                                                                                        
    Turner County                                                                                                                                       
    Union County                                                                                                                                        
    Walworth County                                                                                                                                     
    Yankton County                                                                                                                                      
    Ziebach County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    44. In Sec. 81.343, the table entitled ``Tennessee-Ozone'' is 
revised to read as follows:


Sec. 81.343  Tennessee.

* * * * *

[[Page 31080]]



                                                           Tennessee--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Jefferson County Area:                                                                                                                                  
    Jefferson County....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Memphis Area:                                                                                                                                           
    Shelby County.......................      2/16/95  Attainment                                                                                       
Rest of State...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Anderson County                                                                                                                                     
    Bedford County                                                                                                                                      
    Benton County                                                                                                                                       
    Bledsoe County                                                                                                                                      
    Blount County                                                                                                                                       
    Bradley County                                                                                                                                      
    Campbell County                                                                                                                                     
    Cannon County                                                                                                                                       
    Carroll County                                                                                                                                      
    Carter County                                                                                                                                       
    Cheatham County                                                                                                                                     
    Chester County                                                                                                                                      
    Claiborne County                                                                                                                                    
    Clay County                                                                                                                                         
    Cocke County                                                                                                                                        
    Coffee County                                                                                                                                       
    Crockett County                                                                                                                                     
    Cumberland County                                                                                                                                   
    Davidson County                                                                                                                                     
    Decatur County                                                                                                                                      
    DeKalb County                                                                                                                                       
    Dickson County                                                                                                                                      
    Dyer County                                                                                                                                         
    Fayette County                                                                                                                                      
    Fentress County                                                                                                                                     
    Franklin County                                                                                                                                     
    Gibson County                                                                                                                                       
    Giles County                                                                                                                                        
    Grainger County                                                                                                                                     
    Greene County                                                                                                                                       
    Grundy County                                                                                                                                       
    Hamblen County                                                                                                                                      
    Hamilton County                                                                                                                                     
    Hancock County                                                                                                                                      
    Hardeman County                                                                                                                                     
    Hardin County                                                                                                                                       
    Hawkins County                                                                                                                                      
    Haywood County                                                                                                                                      
    Henderson County                                                                                                                                    
    Henry County                                                                                                                                        
    Hickman County                                                                                                                                      
    Houston County                                                                                                                                      
    Humphreys County                                                                                                                                    
    Jackson County                                                                                                                                      
    Johnson County                                                                                                                                      
    Knox County                                                                                                                                         
    Lake County                                                                                                                                         
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Loudon County                                                                                                                                       
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Maury County                                                                                                                                        
    McMinn County                                                                                                                                       
    McNairy County                                                                                                                                      
    Meigs County                                                                                                                                        
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Moore County                                                                                                                                        
    Morgan County                                                                                                                                       
    Obion County                                                                                                                                        

[[Page 31081]]

                                                                                                                                                        
    Overton County                                                                                                                                      
    Perry County                                                                                                                                        
    Pickett County                                                                                                                                      
    Polk County                                                                                                                                         
    Putnam County                                                                                                                                       
    Rhea County                                                                                                                                         
    Roane County                                                                                                                                        
    Robertson County                                                                                                                                    
    Rutherford County                                                                                                                                   
    Scott County                                                                                                                                        
    Sequatchie County                                                                                                                                   
    Sevier County                                                                                                                                       
    Smith County                                                                                                                                        
    Stewart County                                                                                                                                      
    Sullivan County                                                                                                                                     
    Sumner County                                                                                                                                       
    Tipton County                                                                                                                                       
    Trousdale County                                                                                                                                    
    Unicoi County                                                                                                                                       
    Union County                                                                                                                                        
    Van Buren County                                                                                                                                    
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Weakley County                                                                                                                                      
    White County                                                                                                                                        
    Williamson County                                                                                                                                   
    Wilson County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    45. In Sec. 81.344, the table entitled ``Texas-Ozone'' is revised 
to read as follows:


Sec. 81.344  Texas.

* * * * *

                                                             Texas--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Beaumont/Port Arthur Area:                                                                                                                              
    Hardin County.......................     11/15/90   Nonattainment...........................       6/3/96   Moderate.                               
    Jefferson County....................     11/15/90   Nonattainment...........................       6/3/96   Moderate.                               
    Orange County.......................     11/15/90   Nonattainment...........................       6/3/96   Moderate.                               
Dallas-Fort Worth Area:                                                                                                                                 
    Collin County.......................     11/15/90   Nonattainment...........................      3/20/98   Serious.                                
    Dallas County.......................     11/15/90   Nonattainment...........................      3/20/98   Serious.                                
    Denton County.......................     11/15/90   Nonattainment...........................      3/20/98   Serious.                                
    Tarrant County......................     11/15/90   Nonattainment...........................      3/20/98   Serious.                                
El Paso Area:                                                                                                                                           
    El Paso County......................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
Houston-Galveston-Brazoria Area:                                                                                                                        
    Brazoria County.....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Chambers County.....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Fort Bend County....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Galveston County....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Harris County.......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Liberty County......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Montgomery County...................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Waller County.......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
Longview Area:                                                                                                                                          
    Gregg County........................     11/15/90   Unclassifiable/Attainment...............     11/15/90  .........................................
Victoria Area:                                                                                                                                          
    Victoria County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
AQCR 022 Shreveport-Texarkana-Tyler.....  ...........  1 hr.std.N.A.\2\                                                                                 
    Anderson County                                                                                                                                     
    Bowie County                                                                                                                                        

[[Page 31082]]

                                                                                                                                                        
    Camp County                                                                                                                                         
    Cass County                                                                                                                                         
    Cherokee County                                                                                                                                     
    Delta County                                                                                                                                        
    Franklin County                                                                                                                                     
    Harrison County                                                                                                                                     
    Henderson County                                                                                                                                    
    Hopkins County                                                                                                                                      
    Lamar County                                                                                                                                        
    Marion County                                                                                                                                       
    Morris County                                                                                                                                       
    Panola County                                                                                                                                       
    Rains County                                                                                                                                        
    Red River County                                                                                                                                    
    Rusk County                                                                                                                                         
    Smith County                                                                                                                                        
    Titus County                                                                                                                                        
    Upshur County                                                                                                                                       
    Van Zandt County                                                                                                                                    
    Wood County                                                                                                                                         
AQCR 106 S Louisiana-SE Texas Interstate  ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Angelina County                                                                                                                                     
    Houston County                                                                                                                                      
    Jasper County                                                                                                                                       
    Nacogdoches County                                                                                                                                  
    Newton County                                                                                                                                       
    Polk County                                                                                                                                         
    Sabine County                                                                                                                                       
    San Augustine County                                                                                                                                
    San Jacinto County                                                                                                                                  
    Shelby County                                                                                                                                       
    Trinity County                                                                                                                                      
    Tyler County                                                                                                                                        
    Walker County                                                                                                                                       
AQCR 153 El Paso-Las Cruces-Alamogordo..  ...........  1 hr.std.N.A.\2\                                                                                 
    Brewster County                                                                                                                                     
    Culberson County                                                                                                                                    
    Hudspeth County                                                                                                                                     
    Jeff Davis County                                                                                                                                   
    Presidio County                                                                                                                                     
AQCR 210 Abilene-Wichita Falls            ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate.                                                                                                                                            
    Archer County                                                                                                                                       
    Baylor County                                                                                                                                       
    Brown County                                                                                                                                        
    Callahan County                                                                                                                                     
    Childress County                                                                                                                                    
    Clay County                                                                                                                                         
    Coke County                                                                                                                                         
    Coleman County                                                                                                                                      
    Comanche County                                                                                                                                     
    Concho County                                                                                                                                       
    Cottle County                                                                                                                                       
    Eastland County                                                                                                                                     
    Fisher County                                                                                                                                       
    Foard County                                                                                                                                        
    Hardeman County                                                                                                                                     
    Haskell County                                                                                                                                      
    Jack County                                                                                                                                         
    Jones County                                                                                                                                        
    Kent County                                                                                                                                         
    Knox County                                                                                                                                         
    McCulloch County                                                                                                                                    
    Menard County                                                                                                                                       
    Mitchell County                                                                                                                                     
    Montague County                                                                                                                                     
    Nolan County                                                                                                                                        
    Runnels County                                                                                                                                      
    Scurry County                                                                                                                                       
    Shackelford County                                                                                                                                  
    Stephens County                                                                                                                                     

[[Page 31083]]

                                                                                                                                                        
    Stonewall County                                                                                                                                    
    Taylor County                                                                                                                                       
    Throckmorton County                                                                                                                                 
    Wichita County                                                                                                                                      
    Wilbarger County                                                                                                                                    
    Young County                                                                                                                                        
AQCR 211 Amarillo-Lubbock Intrastate....  ...........  1 hr.std.N.A.\2\                                                                                 
    Armstrong County                                                                                                                                    
    Bailey County                                                                                                                                       
    Briscoe County                                                                                                                                      
    Carson County                                                                                                                                       
    Castro County                                                                                                                                       
    Cochran County                                                                                                                                      
    Collingsworth County                                                                                                                                
    Crosby County                                                                                                                                       
    Dallam County                                                                                                                                       
    Deaf Smith County                                                                                                                                   
    Dickens County                                                                                                                                      
    Donley County                                                                                                                                       
    Floyd County                                                                                                                                        
    Garza County                                                                                                                                        
    Gray County                                                                                                                                         
    Hale County                                                                                                                                         
    Hall County                                                                                                                                         
    Hansford County                                                                                                                                     
    Hartley County                                                                                                                                      
    Hemphill County                                                                                                                                     
    Hockley County                                                                                                                                      
    Hutchinson County                                                                                                                                   
    King County                                                                                                                                         
    Lamb County                                                                                                                                         
    Lipscomb County                                                                                                                                     
    Lubbock County                                                                                                                                      
    Lynn County                                                                                                                                         
    Moore County                                                                                                                                        
    Motley County                                                                                                                                       
    Ochiltree County                                                                                                                                    
    Oldham County                                                                                                                                       
    Parmer County                                                                                                                                       
    Potter County                                                                                                                                       
    Randall County                                                                                                                                      
    Roberts County                                                                                                                                      
    Sherman County                                                                                                                                      
    Swisher County                                                                                                                                      
    Terry County                                                                                                                                        
    Wheeler County                                                                                                                                      
    Yoakum County                                                                                                                                       
AQCR 212 Austin-Waco Intrastate.........  ...........  1 hr.std.N.A.\2\                                                                                 
    Bastrop County                                                                                                                                      
    Bell County                                                                                                                                         
    Blanco County                                                                                                                                       
    Bosque County                                                                                                                                       
    Brazos County                                                                                                                                       
    Burleson County                                                                                                                                     
    Burnet County                                                                                                                                       
    Caldwell County                                                                                                                                     
    Coryell County                                                                                                                                      
    Falls County                                                                                                                                        
    Fayette County                                                                                                                                      
    Freestone County                                                                                                                                    
    Grimes County                                                                                                                                       
    Hamilton County                                                                                                                                     
    Hays County                                                                                                                                         
    Hill County                                                                                                                                         
    Lampasas County                                                                                                                                     
    Lee County                                                                                                                                          
    Leon County                                                                                                                                         
    Limestone County                                                                                                                                    
    Llano County                                                                                                                                        
    Madison County                                                                                                                                      

[[Page 31084]]

                                                                                                                                                        
    McLennan County                                                                                                                                     
    Milam County                                                                                                                                        
    Mills County                                                                                                                                        
    Robertson County                                                                                                                                    
    San Saba County                                                                                                                                     
    Travis County                                                                                                                                       
    Washington County                                                                                                                                   
    Williamson County                                                                                                                                   
AQCR 213 Brownsville-Laredo Intrastate..  ...........  1 hr.std.N.A.\2\                                                                                 
    Cameron County                                                                                                                                      
    Hidalgo County                                                                                                                                      
    Jim Hogg County                                                                                                                                     
    Starr County                                                                                                                                        
    Webb County                                                                                                                                         
    Willacy County                                                                                                                                      
    Zapata County                                                                                                                                       
AQCR 214 Corpus Christi-Victoria          ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate (Remainder of).                                                                                                                             
    Jackson County                                                                                                                                      
    Jim Wells County                                                                                                                                    
    Kenedy County                                                                                                                                       
    Kleberg County                                                                                                                                      
    Lavaca County                                                                                                                                       
    Live Oak County                                                                                                                                     
    McMullen County                                                                                                                                     
    Refugio County                                                                                                                                      
    San Patricio County                                                                                                                                 
    Aransas County                                                                                                                                      
    Bee County                                                                                                                                          
    Brooks County                                                                                                                                       
    Calhoun County                                                                                                                                      
    De Witt County                                                                                                                                      
    Duval County                                                                                                                                        
    Goliad County                                                                                                                                       
AQCR 214 Corpus Christi-Victoria          ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate (part).                                                                                                                                     
    Nueces County                                                                                                                                       
AQCR 215 Metro Dallas-Fort Worth          ...........   1 hr.std.N.A.\2\                                                                                
 Intrastate (Remainder of).                                                                                                                             
    Cooke County                                                                                                                                        
    Ellis County                                                                                                                                        
    Erath County                                                                                                                                        
    Fannin County                                                                                                                                       
    Grayson County                                                                                                                                      
    Hood County                                                                                                                                         
    Hunt County                                                                                                                                         
    Johnson County                                                                                                                                      
    Kaufman County                                                                                                                                      
    Navarro County                                                                                                                                      
    Palo Pinto County                                                                                                                                   
    Parker County                                                                                                                                       
    Rockwall County                                                                                                                                     
    Somervell County                                                                                                                                    
    Wise County                                                                                                                                         
AQCR 216 Metro Houston-Galveston          ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate (Remainder of).                                                                                                                             
    Austin County                                                                                                                                       
    Colorado County                                                                                                                                     
    Matagorda County                                                                                                                                    
    Wharton County                                                                                                                                      
AQCR 217 Metro San Antonio Intrastate     ...........  1 hr.std.N.A.\2\                                                                                 
 (part).                                                                                                                                                
    Bexar County                                                                                                                                        
AQCR 217 Metro San Antonio Intrastate     ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Atascosa County                                                                                                                                     
    Bandera County                                                                                                                                      
    Comal County                                                                                                                                        
    Dimmit County                                                                                                                                       
    Edwards County                                                                                                                                      
    Frio County                                                                                                                                         
    Gillespie County                                                                                                                                    
    Gonzales County                                                                                                                                     
    Guadalupe County                                                                                                                                    

[[Page 31085]]

                                                                                                                                                        
    Karnes County                                                                                                                                       
    Kendall County                                                                                                                                      
    Kerr County                                                                                                                                         
    Kimble County                                                                                                                                       
    Kinney County                                                                                                                                       
    La Salle County                                                                                                                                     
    Mason County                                                                                                                                        
    Maverick County                                                                                                                                     
    Medina County                                                                                                                                       
    Real County                                                                                                                                         
    Uvalde County                                                                                                                                       
    Val Verde County                                                                                                                                    
    Wilson County                                                                                                                                       
    Zavala County                                                                                                                                       
AQCR 218 Midland-Odessa-San Angelo        ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate (part).                                                                                                                                     
    Ector County                                                                                                                                        
AQCR 218 Midland-Odessa-San Angelo        ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate (Remainder of).                                                                                                                             
    Andrews County                                                                                                                                      
    Borden County                                                                                                                                       
    Crane County                                                                                                                                        
    Crockett County                                                                                                                                     
    Dawson County                                                                                                                                       
    Gaines County                                                                                                                                       
    Glasscock County                                                                                                                                    
    Howard County                                                                                                                                       
    Irion County                                                                                                                                        
    Loving County                                                                                                                                       
    Martin County                                                                                                                                       
    Midland County                                                                                                                                      
    Pecos County                                                                                                                                        
    Reagan County                                                                                                                                       
    Reeves County                                                                                                                                       
    Schleicher County                                                                                                                                   
    Sterling County                                                                                                                                     
    Sutton County                                                                                                                                       
    Terrell County                                                                                                                                      
    Tom Green County                                                                                                                                    
    Upton County                                                                                                                                        
    Ward County                                                                                                                                         
    Winkler County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    46. In Sec. 81.345, the table entitled ``Utah--Ozone'' is revised 
to read as follows:


Sec. 81.345  Utah.

* * * * *

                                                              Utah--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Salt Lake City Area:                                                                                                                                    
    Davis County........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Salt Lake County....................  ...........  1 hr.std.N.A.\2\                                                                                 
Rest of State...........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Beaver County                                                                                                                                       
    Box Elder County                                                                                                                                    
    Cache County                                                                                                                                        
    Carbon County                                                                                                                                       
    Daggett County                                                                                                                                      
    Duchesne County                                                                                                                                     
    Emergy County                                                                                                                                       
    Garfield County                                                                                                                                     
    Iron County                                                                                                                                         
    Juab County                                                                                                                                         

[[Page 31086]]

                                                                                                                                                        
    Kane County                                                                                                                                         
    Millard County                                                                                                                                      
    Morgan County                                                                                                                                       
    Piute County                                                                                                                                        
    Rich County                                                                                                                                         
    San Juan County                                                                                                                                     
    Sanpete County                                                                                                                                      
    Sevier County                                                                                                                                       
    Summit County                                                                                                                                       
    Tooele County                                                                                                                                       
    Uintah County                                                                                                                                       
    Utah County                                                                                                                                         
    Wasatch County                                                                                                                                      
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Weber County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    47. In Sec. 81.346, the table entitled ``Vermont--Ozone'' is 
revised to read as follows:


Sec. 81.346  Vermont.

* * * * *

                                                            Vermont--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 159 Champlain Calley Interstate      ...........  1 hr.std.N.A.\2\                                                                                 
 (part).                                                                                                                                                
    Addison County                                                                                                                                      
    Chittenden County                                                                                                                                   
AQCR 159 Champlain Calley Interstate      ...........  1 hr.std.N.A.\2\                                                                                 
 Remainder of).                                                                                                                                         
    Franklin County                                                                                                                                     
    Grand Isle County                                                                                                                                   
    Rutland County                                                                                                                                      
AQCR 221 Vermont Intrastate (part)......  ...........  1 hr. std. N.A.\2\                                                                               
    Windsor County                                                                                                                                      
AQCR 221 Vermont Intrastate (Remainder    ...........  1 hr. std. N.A.\2\                                                                               
 of) County.                                                                                                                                            
    Bennington County                                                                                                                                   
    Caledonia County                                                                                                                                    
    Essex County                                                                                                                                        
    Lamoille County                                                                                                                                     
    Orange County                                                                                                                                       
    Orleans County                                                                                                                                      
    Washington County                                                                                                                                   
    Windham County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    48. In Sec. 81.347, the table entitled ``Virginia--Ozone'' is 
revised to read as follows:


Sec. 81.347  Virginia.

* * * * *

                                                            Virginia--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
    Norfolk-Virginia Beach-Newport News                                                                                                                 
     (Hampton Roads) Area:.                                                                                                                             
    Chesapeake..........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hampton.............................  ...........  1 hr.std.N.A.\2\                                                                                 
    James City County...................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31087]]

                                                                                                                                                        
    Newport News........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Norfolk.............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Poquoson............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Portsmouth..........................  ...........  1 hr.std.N.A.\2\                                                                                 
    Suffolk.............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Virginia Beach......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Williamsburg........................  ...........  1 hr.std.N.A.\2\                                                                                 
    York County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Richmond Area:                                                                                                                                          
    Charles City County (part)..........  ...........  1 hr.std.N.A.\2\                                                                                 
        Beginning at the intersection of                                                                                                                
         State Route 156 and the Henrico/                                                                                                               
         Charles City County Line,                                                                                                                      
         proceeding south along State                                                                                                                   
         Route 5/156 to the intersection                                                                                                                
         with State Route 106/156,                                                                                                                      
         proceeding south along Route                                                                                                                   
         106/156 to the intersection                                                                                                                    
         with the Prince George/Charles                                                                                                                 
         City County line, proceeding                                                                                                                   
         west along the Prince George/                                                                                                                  
         Charles City County line to the                                                                                                                
         intersection with the                                                                                                                          
         Chesterfield/Charles City                                                                                                                      
         County line, proceeding north                                                                                                                  
         along the Chesterfield/Charles                                                                                                                 
         City County line to the                                                                                                                        
         intersection with the Henrico/                                                                                                                 
         Charles City County line,                                                                                                                      
         proceeding north along the                                                                                                                     
         Henrico/Charles City County                                                                                                                    
         line to State Route 156.                                                                                                                       
    Chesterfield County.................  ...........  1 hr.std.N.A.\2\                                                                                 
    Colonial Heights....................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hanover County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Henrico County......................  ...........  1 hr.std.N.A.\2\                                                                                 
    Hopewell............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Richmond............................  ...........  1 hr.std.N.A.\2\                                                                                 
Smyth County Area:                                                                                                                                      
    Smyth County (part).................  ...........  1 hr.std.N.A.\2\                                                                                 
        The portion of White Top                                                                                                                        
         Mountain above the 4,500 foot                                                                                                                  
         elevation in Smyth County                                                                                                                      
         Washington Area:                                                                                                                               
    Alexandria..........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Arlington County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fairfax.............................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fairfax County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Falls Church........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Loudoun County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Manassas............................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Manassas Park.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Prince William County...............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Stafford County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
AQCR 207 Eastern Tennessee--SW Virginia   ...........  1 hr.std.N.A.\2\                                                                                 
 Interstate (Remainder of).                                                                                                                             
    Bland County                                                                                                                                        
    Bristol                                                                                                                                             
    Buchanan County                                                                                                                                     
    Carroll County                                                                                                                                      
    Dickenson County                                                                                                                                    
    Galax                                                                                                                                               
    Grayson County                                                                                                                                      
    Lee County                                                                                                                                          
    Norton                                                                                                                                              
    Russell County                                                                                                                                      
    Scott County                                                                                                                                        
    Smyth County (part)                                                                                                                                 
    Remainder of county                                                                                                                                 
    Tazewell County                                                                                                                                     
    Washington County                                                                                                                                   
    Wise County                                                                                                                                         
    Wythe County                                                                                                                                        
AQCR 222 Central Virginia Intrastate....  ...........  1 hr.std.N.A.\2\                                                                                 
    Amelia County                                                                                                                                       
    Amherst County                                                                                                                                      
    Appomattox County                                                                                                                                   
    Bedford                                                                                                                                             
    Bedford County                                                                                                                                      
    Brunswick County                                                                                                                                    
    Buckingham County                                                                                                                                   

[[Page 31088]]

                                                                                                                                                        
    Campbell County                                                                                                                                     
    Charlotte County                                                                                                                                    
    Cumberland County                                                                                                                                   
    Danville                                                                                                                                            
    Franklin County                                                                                                                                     
    Halifax County                                                                                                                                      
    Henry County                                                                                                                                        
    Lunenburg County                                                                                                                                    
    Lynchburg                                                                                                                                           
    Martinsville                                                                                                                                        
    Mecklenburg County                                                                                                                                  
    Nottoway County                                                                                                                                     
    Patrick County                                                                                                                                      
    Pittsylvania County                                                                                                                                 
    Prince Edward County                                                                                                                                
    South Boston                                                                                                                                        
AQCR 223 Hampton Roads Intrastate         ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Franklin                                                                                                                                            
    Isle Of Wight County                                                                                                                                
    Southampton County                                                                                                                                  
AQCR 224 NE Virginia Intrastate           ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Accomack County                                                                                                                                     
    Albemarle County                                                                                                                                    
    Caroline County                                                                                                                                     
    Charlottesville                                                                                                                                     
    Culpeper County                                                                                                                                     
    Essex County                                                                                                                                        
    Fauquier County                                                                                                                                     
    Fluvanna County                                                                                                                                     
    Fredericksburg                                                                                                                                      
    Gloucester County                                                                                                                                   
    Greene County                                                                                                                                       
    King and Queen County                                                                                                                               
    King George County                                                                                                                                  
    King William County                                                                                                                                 
    Lancaster County                                                                                                                                    
    Louisa County                                                                                                                                       
    Madison County                                                                                                                                      
    Mathews County                                                                                                                                      
    Middlesex County                                                                                                                                    
    Nelson County                                                                                                                                       
    Northampton County                                                                                                                                  
    Northumberland County                                                                                                                               
    Orange County                                                                                                                                       
    Rappahannock County                                                                                                                                 
    Richmond County                                                                                                                                     
    Spotsylvania County                                                                                                                                 
    Westmoreland County                                                                                                                                 
AQCR 225 State Capital Intrastate         ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Charles City County (part)                                                                                                                          
        Remainder of county                                                                                                                             
    Dinwiddie County                                                                                                                                    
    Emporia                                                                                                                                             
    Goochland County                                                                                                                                    
    Greensville County                                                                                                                                  
    New Kent County                                                                                                                                     
    Petersburg                                                                                                                                          
    Powhatan County                                                                                                                                     
    Prince George County                                                                                                                                
    Surry County                                                                                                                                        
    Sussex County                                                                                                                                       
AQCR 226 Valley of Virginia Intrastate..  ...........  1 hr.std.N.A.\2\                                                                                 
    Alleghany County                                                                                                                                    
    Augusta County                                                                                                                                      
    Bath County                                                                                                                                         
    Botetourt County                                                                                                                                    
    Buena Vista                                                                                                                                         
    Clarke County                                                                                                                                       
    Clifton Forge                                                                                                                                       
    Covington                                                                                                                                           

[[Page 31089]]

                                                                                                                                                        
    Craig County                                                                                                                                        
    Floyd County                                                                                                                                        
    Frederick County                                                                                                                                    
    Giles County                                                                                                                                        
    Harrisonburg                                                                                                                                        
    Highland County                                                                                                                                     
    Lexington                                                                                                                                           
    Montgomery County                                                                                                                                   
    Page County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Radford                                                                                                                                             
    Roanoke                                                                                                                                             
    Roanoke County                                                                                                                                      
    Rockbridge County                                                                                                                                   
    Rockingham County                                                                                                                                   
    Salem                                                                                                                                               
    Shenandoah County                                                                                                                                   
    Staunton                                                                                                                                            
    Warren County                                                                                                                                       
    Waynesboro                                                                                                                                          
    Winchester                                                                                                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    49. In Sec. 81.348, the table entitled ``Washington-Ozone'' is 
revised to read as follows:


Sec. 81.348  Washington.

* * * * *

                                                           Washington-Ozone (1-hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Portland--Vancouver AQMA Area                                                                                                                           
    Clark County (part).................  ...........  .........................................  ...........  .........................................
        Air Quality Maintenance Area....  ...........  1 hr.std.N.A.\2\                                                                                 
Seattle-Tacoma Area                                                                                                                                     

[[Page 31090]]

                                                                                                                                                        
    The following boundary includes all   ...........  1 hr.std.N.A.\2\                                                                                 
     of Pierce County, and all of King                                                                                                                  
     County except a small portion on                                                                                                                   
     the north-east corner and the                                                                                                                      
     western portion of Snohomish                                                                                                                       
     County: Starting at the mouth of                                                                                                                   
     the Nisqually river extend                                                                                                                         
     northwesterly along the Pierce                                                                                                                     
     County line to the southernmost                                                                                                                    
     point of the west couty line of                                                                                                                    
     King County; thence northerly along                                                                                                                
     the county line to the southermost                                                                                                                 
     point of the west county ling of                                                                                                                   
     Snohomish County; thence ortherly                                                                                                                  
     along the county line to the                                                                                                                       
     intersection with SR 532; thence                                                                                                                   
     easterly along the north line of SR                                                                                                                
     532 to the intersection of I-5,                                                                                                                    
     continuing east along the same road                                                                                                                
     now identified as Henning Rd., to                                                                                                                  
     the intersection with SR 9 at                                                                                                                      
     Bryant; thence continuing easterly                                                                                                                 
     on Bryant East Rd. and Rock Creek                                                                                                                  
     Rd., also identified as Grandview                                                                                                                  
     Rd., approximately 3 miles to the                                                                                                                  
     point at which it is crossed by the                                                                                                                
     existing BPA electrical                                                                                                                            
     transmission line; thence                                                                                                                          
     southeasterly along the BPA                                                                                                                        
     transmission line approximately 8                                                                                                                  
     miles to point of the crossing of                                                                                                                  
     the south fork of the Stillaguamish                                                                                                                
     River; thence continuing in a                                                                                                                      
     southeasterly direction in a                                                                                                                       
     meander line following the bed of                                                                                                                  
     the River to Jordan Road; southerly                                                                                                                
     along Jordan Road to the north city                                                                                                                
     limits of Granite Falls; thence                                                                                                                    
     following the north and east city                                                                                                                  
     limits to 92nd St. N.E. and Menzel                                                                                                                 
     Lake Rd.; thence south-                                                                                                                            
     southeasterly along the Menzel Lake                                                                                                                
     Rd. and the Lake Roesiger Rd. a                                                                                                                    
     distance of approximately 6 miles                                                                                                                  
     to the northernmost point of Lake                                                                                                                  
     Roesiger; thence southerly along a                                                                                                                 
     meander line following the middle                                                                                                                  
     of the Lake and Roesiger Creek to                                                                                                                  
     Woods Creek; thence southerly along                                                                                                                
     a meader line following the bed of                                                                                                                 
     the Creek approximately 6 miles to                                                                                                                 
     the point the Creek is crossed by                                                                                                                  
     the existing BPA electrical                                                                                                                        
     transmission line; thence easterly                                                                                                                 
     along the BPA transmission line                                                                                                                    
     approximately 0.2 miles; thence                                                                                                                    
     southerly along the BPA Chief                                                                                                                      
     Joseph-Covington electrical                                                                                                                        
     transmission line approximately 3                                                                                                                  
     miles to the north line of SR 2;                                                                                                                   
     thence southeasterly along SR 2 to                                                                                                                 
     the intersection with the east                                                                                                                     
     county line of King County; thence                                                                                                                 
     south along the county line to the                                                                                                                 
     northernmost point of the east                                                                                                                     
     county line of Pierce County;                                                                                                                      
     thence along the county line to the                                                                                                                
     point of beginning at the mouth of                                                                                                                 
     the Nisqually River.                                                                                                                               
AQCR 062 E Washington-N Idaho Interstate  ...........  1 hr.std.N.A.\2\                                                                                 
 (part).                                                                                                                                                
    Spokane County                                                                                                                                      
AQCR 062 E Washington-N Idaho Interstate  ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    Adams County                                                                                                                                        
    Asotin County                                                                                                                                       
    Columbia County                                                                                                                                     
    Garfield County                                                                                                                                     
    Grant County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Whitman County                                                                                                                                      
AQCR 193 Portland Interstate (Remainder   ...........  1 hr.std.N.A.\2\                                                                                 
 of).                                                                                                                                                   
    Clark County (part)                                                                                                                                 
        Remainder of County                                                                                                                             
    Cowlitz County                                                                                                                                      
    Lewis County                                                                                                                                        
    Skamania County                                                                                                                                     
    Wahkiakum County                                                                                                                                    
AQCR 227 Northern Washington Intrastate.  ...........  1 hr.std.N.A.\2\                                                                                 
    Chelan County                                                                                                                                       
    Douglas County                                                                                                                                      
    Ferry County                                                                                                                                        
    Okanogan County                                                                                                                                     
    Pend Oreille County                                                                                                                                 
    Stevens County                                                                                                                                      
AQCR 228 Olympic,-Northwest Washington    ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate.                                                                                                                                            
    Clallam County                                                                                                                                      
    Grays Harbor County                                                                                                                                 

[[Page 31091]]

                                                                                                                                                        
    Island County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Mason County                                                                                                                                        
    Pacific County                                                                                                                                      
    San Juan County                                                                                                                                     
    Skagit County                                                                                                                                       
    Thurston County                                                                                                                                     
    Whatcom County                                                                                                                                      
AQCR 229 Puget Sound Intrastate           ...........  1 hr.std.N.A.\2\                                                                                 
 (Remainder of).                                                                                                                                        
    King County (Part)                                                                                                                                  
    Remainder of County                                                                                                                                 
    Kitsap County                                                                                                                                       
    Snohomish County (Part)                                                                                                                             
        Remainer of County                                                                                                                              
AQCR 230 South Central Washington         ...........  1 hr.std.N.A.\2\                                                                                 
 Intrastate.                                                                                                                                            
    Benton County                                                                                                                                       
    Franklin County                                                                                                                                     
    Kittitas County                                                                                                                                     
    Klickitat County                                                                                                                                    
    Walla Walla County                                                                                                                                  
    Yakima County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    50. In Sec. 81.349, the table entitled ``West Virginia-Ozone'' is 
revised to read as follows:


Sec. 81.349  West Virginia.

* * * * *

                                                         West Virginia--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Charleston Area:                                                                                                                                        
    Kanawha County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Putnam County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Greenbrier Area:                                                                                                                                        
    Greenbrier County...................  ...........  1 hr. std. N.A.\2\                                                                               
Huntington-Ashland Area:                                                                                                                                
    Cabell County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Wayne County........................  ...........  1 hr. std. N.A.\2\                                                                               
Parkersburg-Marietta Area:                                                                                                                              
    Wood County.........................  ...........  1 hr. std. N.A.\2\                                                                               
    Rest of State.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Barbour County                                                                                                                                      
    Berkeley County                                                                                                                                     
    Boone County                                                                                                                                        
    Braxton County                                                                                                                                      
    Brooke County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Clay County                                                                                                                                         
    Doddridge County                                                                                                                                    
    Fayette County                                                                                                                                      
    Gilmer County                                                                                                                                       
    Grant County                                                                                                                                        
    Hampshire County                                                                                                                                    
    Hancock County                                                                                                                                      
    Hardy County                                                                                                                                        
    Harrison County                                                                                                                                     
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mason County                                                                                                                                        

[[Page 31092]]

                                                                                                                                                        
    McDowell County                                                                                                                                     
    Mercer County                                                                                                                                       
    Mineral County                                                                                                                                      
    Mingo County                                                                                                                                        
    Monongalia County                                                                                                                                   
    Monroe County                                                                                                                                       
    Morgan County                                                                                                                                       
    Nicholas County                                                                                                                                     
    Ohio County                                                                                                                                         
    Pendleton County                                                                                                                                    
    Pleasants County                                                                                                                                    
    Pocahontas County                                                                                                                                   
    Preston County                                                                                                                                      
    Raleigh County                                                                                                                                      
    Randolph County                                                                                                                                     
    Ritchie County                                                                                                                                      
    Roane County                                                                                                                                        
    Summers County                                                                                                                                      
    Taylor County                                                                                                                                       
    Tucker County                                                                                                                                       
    Tyler County                                                                                                                                        
    Upshur County                                                                                                                                       
    Webster County                                                                                                                                      
    Wetzel County                                                                                                                                       
    Wirt County                                                                                                                                         
    Wyoming County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    51. In Sec. 81.350, the table entitled ``Wisconsin--Ozone'' is 
revised to read as follows:


Sec. 81.350  Wisconsin.

* * * * *

                                                           Wisconsin--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Door County Area:                                                                                                                                       
    Door County.........................       1/6/92  Nonattainment............................       1/6/92  Rural Transport (Marginal).              
Kewaunee County Area:                                                                                                                                   
    Kewaunee County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
Manitowoc County Area:                                                                                                                                  
    Manitowoc County....................       1/6/92  Nonattainment............................       1/6/92  Moderate.                                
Milwaukee-Racine Area:                                                                                                                                  
    Kenosha County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Milwaukee County....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Ozaukee County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Racine County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Washington County...................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Waukesha County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Sheboygan County Area:                                                                                                                                  
    Sheboygan County....................  ...........  1 hr.std.N.A.\2\                                                                                 
Walworth County Area:                                                                                                                                   
    Walworth County.....................  ...........  1 hr.std.N.A.\2\                                                                                 
Adams County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Ashland County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Barron County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Bayfield County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Brown County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Buffalo County..........................  ...........  1 hr.std.N.A.2                                                                                   
Burnett County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Calumet County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Chippewa County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Clark County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Columbia County.........................  ...........  1 hr.std.N.A.\2\                                                                                 

[[Page 31093]]

                                                                                                                                                        
Crawford County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Dane County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Dodge County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Douglas County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Dunn County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Eau Claire County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Florence County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Fond du Lac County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Forest County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Grant County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Green County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Green Lake County.......................  ...........  1 hr.std.N.A.\2\                                                                                 
Iowa County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Iron County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Jackson County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Jefferson County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Juneau County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
La Crosse County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lafayette County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Langlade County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Lincoln County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marathon County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marinette County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Marquette County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Menominee County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Monroe County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Oconto County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Oneida County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Outagamie County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Pepin County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Pierce County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Polk County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Portage County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Price County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Richland County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Rock County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Rusk County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
St. Croix County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Sauk County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
Sawyer County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Shawano County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Taylor County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Trempealeau County......................  ...........  1 hr.std.N.A.\2\                                                                                 
Vernon County...........................  ...........  1 hr.std.N.A.\2\                                                                                 
Vilas County............................  ...........  1 hr.std.N.A.\2\                                                                                 
Washburn County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Waupaca County..........................  ...........  1 hr.std.N.A.\2\                                                                                 
Waushara County.........................  ...........  1 hr.std.N.A.\2\                                                                                 
Winnebago County........................  ...........  1 hr.std.N.A.\2\                                                                                 
Wood County.............................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    52. In Sec. 81.351, the table entitled ``Wyoming--Ozone'' is 
revised to read as follows:


Sec. 81.351  Wyoming.

* * * * *

                                                            Wyoming--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Albany County                                                                                                                                       
    Big Horn County                                                                                                                                     
    Campbell County                                                                                                                                     
    Carbon County                                                                                                                                       

[[Page 31094]]

                                                                                                                                                        
    Converse County                                                                                                                                     
    Crook County                                                                                                                                        
    Fremont County                                                                                                                                      
    Goshen County                                                                                                                                       
    Hot Springs County                                                                                                                                  
    Johnson County                                                                                                                                      
    Laramie County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Natrona County                                                                                                                                      
    Niobrara County                                                                                                                                     
    Park County                                                                                                                                         
    Platte County                                                                                                                                       
    Sheridan County                                                                                                                                     
    Sublette County                                                                                                                                     
    Sweetwater County                                                                                                                                   
    Teton County                                                                                                                                        
    Uinta County                                                                                                                                        
    Washakie County                                                                                                                                     
    Weston County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    53. In Sec. 81.352, the table entitled ``American Samoa--Ozone'' is 
revised to read as follows:


Sec. 81.352  American Samoa.

* * * * *

                                                         American Samoa--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    54. In Sec. 81.353, the table entitled ``Guam-Ozone'' is revised to 
read as follows:


Sec. 81.353  Guam.

* * * * *

                                                              Guam--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    55. In Sec. 81.354, the table entitled ``Northern Mariana Islands-
Ozone'' is revised to read as follows:


Sec. 81.354  Northern Mariana Islands.

* * * * *

                                                    Northern Mariana Islands--Ozone (1-Hour Standard)                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Whole State.............................  ...........  1 hr.std.N.A.\2\                                                                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  

[[Page 31095]]

                                                                                                                                                        
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    56. In Sec. 81.355, the table entitled ``Puerto Rico-Ozone'' is 
revised to read as follows:


Sec. 81.355  Puerto Rico.

* * * * *

                                                          Puerto Rico--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    Adjuntas Municipio                                                                                                                                  
    Aguada Municipio                                                                                                                                    
    Aguadilla Municipio                                                                                                                                 
    Aguas Buenas Municipio                                                                                                                              
    Aibonito Municipio                                                                                                                                  
    Anasco Municipio                                                                                                                                    
    Arecibo Municipio                                                                                                                                   
    Arroyo Municipio                                                                                                                                    
    Barceloneta Municipio                                                                                                                               
    Barranquitas Munic.                                                                                                                                 
    Bayamon County                                                                                                                                      
    Cabo Rojo Municipio                                                                                                                                 
    Caguas Municipio                                                                                                                                    
    Camuy Municipio                                                                                                                                     
    Canovanas Municipio                                                                                                                                 
    Carolina Municipio                                                                                                                                  
    Catano County                                                                                                                                       
    Cayey Municipio                                                                                                                                     
    Ceiba Municipio                                                                                                                                     
    Ciales Municipio                                                                                                                                    
    Cidra Municipio                                                                                                                                     
    Coamo Municipio                                                                                                                                     
    Comerio Municipio                                                                                                                                   
    Corozal Municipio                                                                                                                                   
    Culebra Municipio                                                                                                                                   
    Dorado Municipio                                                                                                                                    
    Fajardo Municipio                                                                                                                                   
    Florida Municipio                                                                                                                                   
    Guanica Municipio                                                                                                                                   
    Guayama Municipio                                                                                                                                   
    Guayanilla Municipio                                                                                                                                
    Guaynabo County                                                                                                                                     
    Gurabo Municipio                                                                                                                                    
    Hatillo Municipio                                                                                                                                   
    Hormigueros Municipio                                                                                                                               
    Humacao Municipio                                                                                                                                   
    Isabela Municipio                                                                                                                                   
    Jayuya Municipio                                                                                                                                    
    Juana Diaz Municipio                                                                                                                                
    Juncos Municipio                                                                                                                                    
    Lajas Municipio                                                                                                                                     
    Lares Municipio                                                                                                                                     
    Las Marias Municipio                                                                                                                                
    Las Piedras Municipio                                                                                                                               
    Loiza Municipio                                                                                                                                     
    Luquillo Municipio                                                                                                                                  
    Manati Municipio                                                                                                                                    
    Maricao Municipio                                                                                                                                   
    Maunabo Municipio                                                                                                                                   
    Mayaguez Municipio                                                                                                                                  
    Moca Municipio                                                                                                                                      
    Morovis Municipio                                                                                                                                   
    Naguabo Municipio                                                                                                                                   
    Naranjito Municipio                                                                                                                                 
    Orocovis Municipio                                                                                                                                  
    Patillas Minicipio                                                                                                                                  
    Penuelas Municipio                                                                                                                                  
    Ponce Municipio                                                                                                                                     
    Quebradillas Municipio                                                                                                                              
    Rincon Municipio                                                                                                                                    
    Rio Grande Municipio                                                                                                                                

[[Page 31096]]

                                                                                                                                                        
    Sabana Grande Municipio                                                                                                                             
    Salinas Municipio                                                                                                                                   
    San German Municipio                                                                                                                                
    San Juan Municipio                                                                                                                                  
    San Lorenzo Municipio                                                                                                                               
    San Sebastian Municipio                                                                                                                             
    Santa Isabel Municipio                                                                                                                              
    Toa Alta Municipio                                                                                                                                  
    Toa Baja County                                                                                                                                     
    Trujillo Alto Municipio                                                                                                                             
    Utuado Municipio                                                                                                                                    
    Vega Alta Municipio                                                                                                                                 
    Vega Baja Municipio                                                                                                                                 
    Vieques Municipio                                                                                                                                   
    Villalba Municipio                                                                                                                                  
    Yabucoa Municipio                                                                                                                                   
    Yauco Municipio                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    57. In Sec. 81.356, the table entitled ``Virgin Islands-Ozone'' is 
revised to read as follows:


Sec. 81.356  Virgin Islands.

* * * * *

                                                         Virgin Islands--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr.std.N.A.\2\                                                                                 
    St. Croix                                                                                                                                           
    St. John                                                                                                                                            
    St. Thomas                                                                                                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is June 5, 1998, unless otherwise noted.                                                                                                  
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
[FR Doc. 98-14581 Filed 6-4-98; 8:45 am]
BILLING CODE 6560-50-P