RULES- AND: REGULATIONS;
(c). Gasoline, loading. (1C: No-personm shall, load gasoline into any- truck, trailer, railroad. tank car or- other mobile: non-marne vesseL from any gasoline,terminaL unless the-gasolineterminal is equipped-with a, vapor-re-- covery-disposal system, and-unless all displaced vaporsi and gases of organicscompounds discharged. during- the loading: operatiom are vented: only-to the! vapor recovery-disposal- system.- Measures shalL be takem to: prevent liquid: drainage: before the loading device is disconnected.

(2) No person shall load -gasoline into any- tank truck, trailer; railroadtank car or other mobile non-marine vessel from any bulk gasoline plant unless, the bulk: gasoline plant is. equipped with a vapor collectiom system; and unless-noless than 90pecent by weight of vapors,and-gases o organic compounds' discharged-during the-loading: operation: are vented.to thig vapor collection system. Measuresshall be takemto,preventliquid] drain-' age-beforethe-loading-device isodisconnected:

(i) All vapors an& gases-collected,in: the vapor collectior, system shallbedirected, to a. vapor recovery-disposal system

(ii) All intermediate,transfers.necessary to direct the-vapors-aridgasesin a, vapor collection: systen to'atvaporre- covery-disposal system shall be -accomnplished- so, as-toprevent the release of at. least 90.percent.by weight of these vapors and gases, toi the atmosphere during,eaclh-transfer

(d).Gasoline unloading.,No persoshalli transfer gasoline nor- cause- orallow gasoline to be transferred fror. any'delivery vesselrinto any; stationary storage container with- a capacitygreater than, 250i gallons-unless-suchcontainer Is equipped-- with a submerged fill pipe-and, unless the displaced vapors and gases& from.the storagecontainer are collected and.directed to-a; vapor collection system' or-a- vapor recovery:disposaL, system.. Thecollection procedure-frormthe stationary storage container shall prevent, therelease tor the-atmosphere- of-no, less than,901percent by weight ofor- ganic-compounds in: said' vapors and gases displaced. from- _the stationary container locatiom The provisions: of this paragraph shall' not.apply, to:deliveries. made to and storage, in, the exempted storage containers, in- paragraph (g);.

-

(1). Thie collection ob displaced vapors and. gases; shalL be- accomplished, utilizing the- following equip,

- ment:

(i) A vaportight, return line from the storage container-to the delivery vessel, and,

(ii)-A,system that:will-ensure' thatno. gasoline can be transferied,, into> the container unless.the vapor return line is.connected

(2), I a

- vapor collection system is; used::

(i),All vapors: and gases- collected-in, the. vapor-collectionsystem shall be,directed- to. a vapor recovery-disposal system.'

(ii) All intermediate-transfers necessary to-direct thevapors and'gasesin a vapor collection, system to-a vapor re- covery-disposar system shall be accom- plished,so as to:prevent-the release of

no Iess than' 90 percent by weitit of these vapors, and gases to the,atmosphereduring-each,transfer.



### (e) Gjasolfnestorage:, No- person-shalr store gasoline in any-stationary storage container with a-capacity greater. than 25Wgallons-unless such container is'equipped with'a submerged filI pipeand: equipment which will-permit no, less than 90 percent by weight of organic compounds in the -vapors- andgases, displaced during- any gasoline transferto-be collected and directedto'

a vapor collection system or a, Vapor recovery-disposal system. The- provisions ofthisparagraph shall not apply to- deliveries- made-tor and storage irthe exempted- storage containers- inparagrapIr (g.

(f) Gasoline-delvery-vessels- Any, tank truck-,trailer,rairoad tank- car or other non-marine delfvery-vessel used' to transport gasoline, or gasoline vapors and- gases shall. be subject to the following conditions:

-(f). The deivery vessel shall be equipped' so as to permit it to receive vapors-and.gases-directed to-it during any gasoline unloading-operations at facilities- suiect to, this; regulation, and to permit it tor direct collected: vapors and gases to a vapor collection-

or vapor recovery-disposal systemduring any'loading operation'.

(2) The delivery vessel shall be equippedf so as:to)be compatible with. the vapor control equipment at all non-exempt-facilitiesz utilized!or' serv-- iced.by'the delivery--vessel duringgasolne loadingorunloading operations.

(3) The dhelvery vessel must be' so designedcr and maintained, as- to be vapor-tight at all times, except for pressurerelief under emergency conditions.

C-

-The vapor-laden delivery vessel may be refilled, only at facilitieequipped, with-

-a vapor collectiom system and/or vapor recovery-disposaL system;.an&such system-shall be uti-- lized during-any refillingoperation.

(g) Exempted storage containers-, Gasoline deliveries: made-to-and storage in, the iollowing-,are classified asexempt:

(1), Stationary containers having.. a- capacit- of 550, gallons-or less which'

are-used exclusively for the fueling of implements ofhusbandry:_

- (2 Any container Installed prior to November 13, 1973tandhaving a capacity'less.than 200Ugallons.

(3) Storage tanks equipped with floatngroofs ortheir equivalent,

l o-.-A1r compliance dates and compil.
ance schedules that previously appeared In §r52!1597 and-§52.1598 have been removed' sinceall listed dateshave passed.

-52.1597 [Reserved]

3-.Section 52.1597 is revoked and reserved]
§52=.5-58 [Reserved]

4. Section 52.1598 is-revoked and reserved. (Sections 11(k anc 301 ofthe Clean Air Act,
as amended (42U.S.C 7410 7601).)

[FR. Doe. 79-8259 Flied'3-16-79: 8:45,ml

[6560-01-M];

SUBCIAPTErC-AIR PROGRAMS

[FRL 1076-31

PARt &t-AIR- QUAUTY- CONTROL, REGIONS, CRITERIA, AND, CONTROt. TECHNIQUES

Attainment Status Designations
AGENCY: Environmental Protection Agency. ACTIONl: Finalrulemaking. 

### SUMMARY. This rulemaking, responds to comments andmakes necessary amendments to the dbsignations of attainment status. relative, to; the National Ambient Air Quality Standards (NAAQS).for Arizona, California, Nevada;.Hawai and)Guam. This,rulemakingsupplements~the national EPA rulemaking of September U-, 1978 (43 

### FR40412);. and Incorporates by refer ende EPA's:posltiormon certain general issues. presented- in- that rulemaking'. Ir addition to this rulemaldng. al notice ofproposed rulemaking Is being, prepared. for certair Regionm IX desig" ,nations that. EPA Is proposinV, to change tononattainmentL DATES:.Effective Immediately, ADDRESS: Comments on this, rulemaking,should be directed to: Arnold Den-, Chief, Air Technical Branch, EPA Region IX, 215 Frenont, Street (A-4), SanFrancisco,!CA.94105,
FOR FURTHER' INFORMATION 

### CONTACT,

Charlotte Hopper, Acting Chlf, TechnfcaL Analysis. Section, EPA Region.IXPhone. C415) 556-2002
SUPPLEMENTAPWY INFORMATION' The Clean: Air Act' Amendments or 1977 (the 197" Amendments;. Pub. L. 95-95,, added- Section. 107(d) to: the CleanmAiAct (the Act),which,directed

FEDERAL REGISTER,.VOL,44; NO2. 54:-MONDA.Y, HAROL19, 19z9 

## 16389each State to submit to the Administrator a listoftheNAAQS attainment status of all areas within the State. TheAdministrator was required under Section 107(d)2) to promulgate the State lists, with any necessary modifications. For each NAAQS. areas are classified as either not attaining the standard or, for certain pollutants, projected ihot to maintain the standard (nonattainment areas), meeting the standard (attainment areas), or lacking sufficient data or information to be classified (unclassified areas). The U.S. Environmental Protection Agency (EPA or the Agency) pub1ishedthese listsin theFEDERAL REGISTR on March 3, 1978 (43 FR 8962Y and invitedthe public to submitcomments tothe Agency byMay 2, 1978.

EPA Region DC received numerous comments on theMarch 3, 1978 rulemaking, particularly concerning Callfornia designations. Consequently, EPA asked the State of California Air Resources Board (ARB) to review and respond to these comments. The comments and the State's responses to them were made available for public inspection because of the public interestbnd further commentspn all these materialswere solicited byEPAfor 30 days(43 FR 39101. September 1, 1978)

Certain issues raised in these commentS were similar to those raised by others throughout the nation. These issues were addressed in the EPA national rulemaking" of September 11, 1978 (43 FR 40412), and include the following-

(1) The impact ofdesignations on individual sources;

(2) The State determination of geographic boundaries for designation purposes;,

(3) The effect of designations on.
new source review (NSR) and prevention ofsignificant deterioration (PSD) requirements;

(4) Theuse ofprojected futureviolations for nonattainment designation purposes;

(5) The adequacyofTSPmonitoring sites;

(6) The EPA procedures in promulgatingMarch 3, 1978 designations; and

.(7) The State procedures in determining attainment status designations.

The discussion ofthese issues in the national rulemaking is incorporated here by reference. Additional issues whichare specific tothe states in-EPA Region IX are addressed inthis action. Based on theinformation provided by several commenters, EPA is revising certain designatidns to unclassified or attainment. In a separate notice of proposed rulemaking; EPA is proposing to.revise certain other Region IX designations to- nonattainment and public comments arebeingsolicited.

On-January 26, 1979, EPA established a new NAAQS forozorie of (.12 

### RULES AND REGULATIONS

ppm. (primary and secondary) to replace the photochemical oxidant standard of 0.08 ppm. Because of this change, some areas designated asnonattainment withrespect to the oxidant standard will become candidates for redesignation as attainment areas by the States. Region IX will review the status of specific areas at the request of interested state and local governments to determine whether they should be attainment areas under the

new standard. Anychanges to the designations which are currently in effect and those which are promulgated here wil be published in a future FEDERAL REGISTER.

For good cause, the designations revised by this rulemaking are effective immediately. As discussed in the EPA national rulemaking, the primary purpose ofthese designations is to Identify problem areas forwhich State planningmustbe completed by a statutory deadline. These designations Impose

no obligation on any source. There would therefore beno point in deferring the effective date. The Issues raised in the comments are discussed by state in thefollowing paragraphs.

CAWIFORNIA
Several ommenters criticized the State of California's procedure whereby the Executive Officer of the ARB developed the attainment status designations.- The ARB has certified that theExecutive Officer has the authority under State law to make the designations required by Section 107(d) of the Act.Matters of allegedprocedural irregularities under State law are best addressed atthe State level.

One commenter suggested that violation of a NAAQS during one year may be the result of unrepresentative meteorological conditions and. therefore should not result in a nonattainment designation. No specific areawas cited in the omment. The State. in designating nonattainment areas, re- viewed the most recent two or more years of data. In addition, EPA recognizes the possibility of unrepresentative data and, in accordance with 40 CFR 51.12(d). such, data may be excluded from the determination of attainmentstatus.

TOTAL SUSPENDED PARTICULATES (TsP)
The State of California recommended that the TSP designations of 1

areas in California be changed and provided supporting Information to document their requested changes. These recommended cqesignations are brieflydiscussed below:

Colusa County should be designated unclassified because the limited amount of data available recorded no violations oftheTSP standards.

Marin, Napa, and San Mateo Counties and the portions of Solano and 

### 16389

Sonoma Counties within the San Francisco Bay Area Air Basin should be designated attainment since monitoningdata indicates no TSP standard violations in these counties in recent years.

Yolo County should be designated nonattainment (secondary) since air qualitydatahas recordedviolations of secondary, but not primary, TSP standards.

Monterey County andthe Air Quality Maintenance Area CAQMA) portions of Placer and Santa Barbara Counties should be designated attainment They had been inadvertently designated nonattainment by the State because recorded data exceeded the annual average concentration "guide" (40 CFR 50.7(a)) 60jg/m?, but not the annual standard of75 pgfmx.

Humboldt, Tuolumne, and Sonoma (NorthCoast AirBasinportion) Counties should be redesignated because monitoring data used to make the original designation was later invalidated by the State. Humboldt County should be designated nonattainment (secondary) because the remanfing valid data.in the County recorded sec- ondary,butnotprimary, standardviolations. Tuolumne County should be designated unclassified because sufficientvalid data ispresently-not available to determine the County's attainment status. Sonoma County (the North CoastAirBasin portion) should be designated attainment because the valid data recorded no violations of the TSP standards.

EPA has reviewed the supporting data for requested TSP designation changes described above and agrees with the rationale for each change. The designations are revisedas recommendedby the State ofCalifornia.

One commenter questiohed the siting of monitoring stations,and the validity ofthe air quality data used to support theTSP nonattainment designation of Butte County. The designationwas basedon air qualitydata that recorded numerous TSP violations. EPA hasreviewed the air quality data and information regarding the monitoring sites, and confirms the TSP nonattainment designation of Butte County. SULyUR DIOXIDE(So.)

Several commenters questioned the SO nonattainment designation ofthe 

### South Coast Air Basin portion ofLos Angeles County. The State ofCalifornia.commented that the original nonattainment designation had been basedon a.projection using an.incomplete emission inventory Projections based ona completeinventory indicate the SO standards w-il Continue to be maintained. EPA's review of the current and projected air quality con- firms the State's conclusion and the

FEDERAL REGISTER, VOL 44; NO. 54-MONDAY, MARCH 19, 1979

### 16390

SO2 designation of the South Coast Air Basin portion of Los Angeles County is revised to attainment. ISeveral commenters questioned theSO2 nonattainment designations ofthe San Joaquin Valley Air Basin portion of Kern County. These comments
were submitted by several oil companies, the Western Oil and Gas Association (WOGA), and the-Kern County Air Pollution Control District. The State of California based its designation on projected SO2 emissions growtl resulting in future violations of the annual SO2 standard. As discussed in the EPA national rulemaking, projections of future violations

can provide the basis for a nonattainment designation. Theprojection technique used by the State IS consistent with EPA estimating procedures. The State's projection of nonattainment is further supported by air quality dispersion modeling conducted for'an oil company which shows future violations ofthe annual SO2standard.

The commenters questioned the State's method of projecting increased' SO. emission levels in Kern County and claimed that new source review (NSR) and prevention of significant deterioration (PSD) requirements will result in decreased SO2 emissions in the future. Kern County's new source review rule does not apply to new minor point sources, area or mobile
sources, orexisting sources. Therefore, many new ormodified sources not subJect to NSR or offset requirements be-

cause of the size cutoff, could become operational and create an increase in SO2 emissions. The commenters did not provide documentation or demonstrate that the brojected total SO emissions would not increase, even if NSR and PSD had been considered in• the projections.

In addition to both the projected and modeled future SQ. violations, dispersion modeling shows current violations in Kern County. A recent air quality dispersion modeling study by EPA Region IX showy current violations of the annual SO2 standard in Kern County. In addition, modeling studies submitted by WOGA show past, present, and future violations of. the annual SO2standard.

Under Sections 171(2), and 107(d)(1) (A) through (C) of the Clean Air Act, two alternative criteria exist for designating an area as nonattainment for SO. Any area that currently violates' the SO2 standard, is to be designated

as nonattainment, and any area where, in the State's judgment, the primary standard for SO 2 may not be maintained shall also be designated as nonattainment. Under either criteria, the nonattainment designation' bf 'Kern Countyis appropriate. One comment questioned the use of air quality modeling results in designa- -RULES AND REGULATIONS
ting attainment status where monitoring data is available. Section 171 of the Clean Air Act defines "nonattainment area" as an area which is shown by monitored data or which is calculated by air quality modeling to exceed any national. ambient air quality standard. Thus .airquality modeling Is specifically authorized as a basis for determining whether an area is attainingthe standards.

One commenter stated that the State should have analyzed Kern County's air quality on a subcounty basis. Section 107(d) of the Act provides that attainment status designations are to be composed ofair quality control regions, or portions thereof.' States may choose to Impose requiremerits over a broader or narrower geographic region than the precise area where sources exist that contribute to particular concentrations of a pollutant. In this case, the State" chose to designated -nonattainment' for that portion of Kern County within the San Joaquin Valley Air Basin. This

area encompasses all significant SO. emission sources and is therefore acceptable.

Based upon a review of the available information, there isinsufficient documentation ,tojustify a change in the SO nonattainment designation for the San Joaquin Valley Air BasinportionofKern County. , • CARBON MONOXIDE (CO)

- The State recommended that the CO designation of Sutter County be changed to unclassified because no CO monitoring has been conducted in the, County for several years. EPA agrees with the State's recommendation and designates Sutter County unclassified for CO.

Two commenters questioned the CO nonattainment designation of Contra Costa County in-view of the fact that

no CO violations have been recorded there in recent years. The state of California chose to designate the whole San Francisco Bay Area Air Basin, of whibh Contra COsta County is a part, as nonattainment for CO. This basinwide designation is acceptable under Section 107(d) of the Act Since designations can be defined in terms of air quality control regions, or portionsthereof. Numerous CO violations have been recorded in the Air Basin and motor yehicles account for about 85 percent of the CO emissions. Because the CO problem in the Air Basin is-priniarily transportation re- lated, it needs to be addressed on a region-wide basis. The State commented that a regional planning approach has been irnitiated in the San Francisco'Bay Area and should be continued to solve the CO problem. EPA agrees with the State's rationale and is not revising the CO nonattainment designation forthe San Francisco Bay Area Air Basin, Including Contra Costa County.

Commenters recommended that CO nonattainment boundaries in the Santa Barbara AQMA, Fresno and Butte Counties be reduced to either the metropolitan area or the central business district since violations had not been recorded beyond those areas. The State of California commented that CO is generally regarded as an automobile related pollution problem. Motor vehicles from outside the cen- tral city contribute to'the CO problem when they travel to the central area and, therefore, efforts to develop pollutant control strategies should be for

as broad a geographical area as is reasonable. EPA agrees with the State's rationale and notes again that the State has the authority under Section 107(d) to determine designation boundaries. No change in the CO non- attainment area boundaries of the Santa Barbara AQMA, Fresno County,

or Butte County are being made at this time.

One commenter questioned the siting of a monitoring station and the validity of the air quality data used to support the CO nonattainment design. tion of Butte County. The State of California designated Butte County nonattainment on the basis of numer-
ous violations of the 8-hour CO standard. A review of the air quality data and information regarding the monitoring station does not support a change in the nonattaiment designation.
PHOTOCHEMICALOXIDANTS (0)

-

One commenter questioned the Ox nonattainment designation for Glenn County since there is no Ox monitoring station in the County. The entire Sacramento Valley Air Basin, which includes Glenn County, was designated nonattaiment by the State. The basin-wide designation was made be-

cause of the physical nature of oxidant formation and transport, the

common geography and meteorology within the Valley, and because every oxidant monitor in the Valley has re- corded violations ofthe standard.

Since Ox violations are a basinwide problem, It is reasonable to address the problem through regional air quality planning. Therefore, the Ox nonattainment designation of Glenn County isnot beingrevised at this time.

One commenter questioned the va- lidity of the air quality data and the monitoring stations used to support the Ox nonattainment designation of Butte County. The State ofCalifornia chose to designate the entire Sacramento Valley Air Basin, which includes Butte County, as nonattainment. As previously noted, Ox violations have been recorded throughout

FEDERAL REGISTER, VOL 44, NO. 54-MONDAY, MARCH 19, 1979the Sacramento Valley Air Basin, including, numerous violations in Butte County. A review of the air quality data and information regarding the monitoring station% does not support a change in the Ox nonattainment designation.

Two comments questioned the nonattainment designation of Butte County because there was less air pollution there than in other areas. Since the designation is based on measured violation of the standard and not on comparisons of relative air quality between geographic areas, no change is being considered in the Oxdesignation ofButte County.

NEvADA
Two commenters questioned the geographic boundaries ol nonattainment

areas in Nevada. The State ofNevada chose to designate areas based on air quality measurements made in certain portions of air quality control regions, which is consistent with Section 107(d) of the Act. EPA reaffirms the State's boundary designations since the State has selected these as the most reasonable planning areas.
HAWAII

TOTAL SUSPENDED PARTICULATES (TSP)
On March 3, 1978 EPA designated Maui Island and Hawaii Island as "unclassified" for TSP. The State of Hawaii commented that the designations shouldbe attainment because no recent violations have been reported

on either Island. A review of 1977 air quality data shows that the annual TSP standard is violated at Kahului, Maui Island. This information will be considered in a separate notice ofproposed rulemaking.While no monitored violations have been reported on Hawaii Island in recent years, there is insufficient monitoring in the vicinity of major TSP emission sources along the Hamukua Coast to determine attainment status. Therefore, there is inadequate information to support re- vising the current designation. EPA reaffirms the unclassified TSP designation ofHawaii Island.
GUAM

TOTAL SUSPENDED PARTICULATES (TSP) On March 3, 1978. EPA designated Guam nonattainment for TSP. The Government of Guam commented that the designation for the Island should notbe nonattainment sincethe monitors recording recent violations

are unduly influenced by reentrained road dust.EPAhas reviewed themonitoring sites and agrees that reen- trained dustmay contribute to theviolations. Since there is insufficient data from other monitorq to determine Guam's attainment statusat thistime, 

### RULES AND REGULATIONS

the Island's designation for TSP is changed tounclassified.

SULFUR DIOXIDE (SO) 

### On March 3, 1978. EPA designated Guam nonattainment for SO,. The Government of Guam commented that theIsland's designation should be attainment because there have been
no violations inrecent years. Areview of monitoring data supports this claim. However, the Piti power plant
uses a supplementary control system (SCS) which involves switching to low sulfur fuel during certain wind conditions to avoid violations of the SO. standards. Sections 123 and 302 ofthe Act do not allow standards to be met through the use of dispersion techniques, Le., SCS. As discussed in the EPA national rulemaking of Septem- ber 1I, 1978, sources employing dispersion techniques in place of constant control techniques toprevent SOzviolations.are to bedesignated nonattainment.Therefore, no change Inthe SO, nonattainment designation ofGuam is being made at this time

ARIZoNA 

### The attainment status designations for Arizona were prepared and pro- mulgated byEPAonMarch 3, 1978 be.
cause theState didnot submit Its designations to EPA in time to comply with the requirements of Sectionm 107(d) of the Act. The State subsequently submitted designations on August 15, 1978. This rulemaking will address only the State's designations concerning NO.. CO. and oxidants. The State's designations for SOa and TSP are being analyzed by EPA and will be considered in a separate rulemaking.

NITROGEN DIOX)DE (NOr)-



### The State ofArizona designatedthe whole State as "cannot beclassified or better than national standards!' for NO 2

### . Since no violations of the NO. standard havebeen reiborded InArizona, EPA concurs with the State's des. "ignation and notes that It is Identical to EPA's promulgation, of March 3, 1978.

cARBoN MONOXIDE (CO)



### The State ofArizona has designated two areas asnonattainment forCO:

C)Thatportion ofMarlcopa County known as the Maricopa Association of Governments (MAG) Urban Planning Area; and (2) That portion, within Pima County,of the area described by connecting thefollowing geographical coordinates: Latitude32'38.5'N,longitude 11124.0' W Latitude32'26.5'N.longitude 110"47.5"W Latitude3212.5"N,longitude 110"32.5" W Latitude31*49.5' N,longitude 110'25.5!W Latitude31*42.0"N.longitude 110'50.5 W Latitude31V52.5"N.longitude 111"12.5'Vr 

### 16391

Latitude 32,.5" N. longitude 111'29.0"W 

### Excepting Townships TllS, RUlE and TI2S, RIE. The State has designated the remainder of the State as "cannot be classified or better than national standards." The two nonattainment areas encompass Phoenix and.Tucson where COviolations have been recorded. EPA has reviewed the CO data from Arizona and concurs with the State's designations

One commenter recommended that the CO nonattainment area in Maricopa County be limited to major traffic corridors in Phoenix. The State of Arizona chose to designate the MAG Urban Planning Area as the CO non- attainment area. The basis for this

area Is that motor vehicles are the major source ofCO emissions.

Much ofthe traffic that causes high emissions in the downtown area comes from the suburbs and outlying areas and a regional planning approach is needed to solve the CO problem. Therefore, no change is beingmade to the State ofArizona's designated non- attainment boundar) which is the M-GUrban PlanningArea.

PHOzOCREzC&L OXIm1Nrs (ox)
The State of Arizona has designated 

### thePhoenx and Tucson areas (as described above) as nonattainment for Ox. The remainder of the State has been designated as "cannot be classified or better than national standards." EPA has reviewed the airmonitoring data and concurs with the State's designations.

One conmenter recommended that the Ox nonattainment area in Maricopa County be limited to major traffic corridors in Phoenix. The State of Arizona chose to designate the MAG Urban Planning Area as nonattainment since oxidant is an area-wide probldm which requires a regional

- planning approach. Limitingthe designation to the major traffic corridors would notbe consistentwith thephysical nature of oxidant formation and transport. Therefore, no change is being made to the State of Arizona's designated nonattainment boundary which is the MAO Urban Planning Area.

Two commenters recommended that nonattainment areas in Pima County should be either countywide or based

on air sheds as defined by mountain peaks and the natural ridgelines between them. The State of Arizona has elected to define nonattainment boundaries in terms of townships and straight line segments between peaks. The commenter did notprovide suffidlent technical data to support revising the Ox nonattainment boundaries in Pima County. Therefore, nochange to the State of Arizona's designated boundary Is being considered at this time.

FEDERAL REGISTER, VOL 44, NO. 54-MONDAY, MARCH 19, 1979

### 16392

TYPOGRAPHICAL ERROR The State of California submitted a comment pointing out a typographical

error in the March 3, 1978 rulemaking (43 FR 8974) for California CO. The designation table has been corrected to read "Los Angeles County (S.E. Desert Air Basin Portion)" instead of, in part,".* * S.E.Desert AQMA"

As noted in the EPA national rulemaking of September 11, 1978 (43 FR 40412), to have any designation amended, a person should submit ape

### RULES AND REGULATIONS

tition with supporting data and analysis to the State, with a copy to the EPA Region IX Office at the lQcation given in the ADDRESS section ofthis rulemaklng:.If the person is not satisfied with the-State's response to the petition, he may then petition the EPA Region IX Office to modify the current designation.

NoT.-The Environmental Protection Agency,has determined that this document is not a significant regulation and does not requirepreparation ofa regulatory analysis underExecutive Order 12044. ARIZONA-O. AuTHoirry: Sections 107(d). 171(2). 301(a) ofthe CleanAir Act. asamended (42 U.S.C. 7407(d), 7501(2), 7601(a)).

Dated: March 7, 1979.
DOUGLAS M.COSTLE, Administrator.
1. In 81.303-Arizona, the attain ment status designatibn table for 0,, CO, and NO, are revised to read as follows:
§81.303 Arizona.

Does not Cannot be

meet classified or Designated area primary better than standards national standards

Maricopa Association of GovernmentsUrban Planning Area

...... X................ Tucson Area. X

................ RestofState

........ X

ARizoNA-CO
Maricopa Association ofGovernments UrbanPlanning Area

. ........ X

......... Tucson Area X

................ Rest ofState.....

...

ARIZONA-NO.'

Whole State...

..................... . ......... .. . .... X

2. In 81.305-California, the attainment designation tables are amended

as follows:

A. The tables for TSP are revised in their entirety.

B. That portion ofthe table for SO2 beginning with "South Central Coast Air Basin: San Luis Obispo County" and ending with "South Coast Basin Portion of Riverside County" is re- vised.

C. The table for CO beginning with "SanJoaquin Valley AirBasin:Fresno County" and ending with "Sacramento Valley Air Basin: Tehama County" is revised. D. The table for CO beginning with "Los Angeles County (Portion within S.E. Desert AQMA)" and ending with "TahoeAir Basin" is revised.

The amended portions of the tables for 81.305-California read as setforth below: §81.305 California.
CALIFoRNL-TSP
Does not Does not Better than Designated area meet meet Cannot be national primary secondary classified standards standards standards NorthCoastAirBasin: Delo County (otCosAi. anPri....

....................................... rt. X Humboldt

... X..................................... Mendocino Co ny.

.... . . ... . ... . X

.. ...... ................. Sonoma County(NorthCoastAirBasinPortion)-...................... X TrinityCounty

..... . .... ........................ X LakeCountyAirBasin

... . ............................... •X North CentralCoastAirBasin-...

........... .............. X
South Central Coast AirBasim SanLuis ObispoCounty:.

Salinas Valley-El Pomar Bstrella Planning Non-.alinas X
SantaBarbaraCounty (AQUA Portion)-

.. .................. Santa Barbara County (Non.AQMA Portion): A. West area ofnorth-south boundary separating Santa Ynez andLompoc Valleys-..... X

..................... B. East area of north-south boundary separating SantaYnes andLompoc Valleys
.....-.. .. .. X

........ Ventura County: NorthofLos PadresNat' Forestboundaries.....

............. X

................... South ofLos PadresNatl Forestboundaries X

..... ................ ....................... Channel Islands X

........ San DiegoAirBasin* San Diego County (WestPortion).

..... X ...................-......................... San Diego County(EastPortion)

.. ......................... X

................. Souith Coast AirBasin X ...-...................-.................... SanJoaquinValley AirBasin X.................................................. Sacramento ValleyAirBasin: Sacramento County---.........- X -. .. ............... Solano County (Sacramento Valley AirBasin Por- tion) -- - - - - X

. . . ... . ... Yolo County--........____

.. X

.................... Butte ConyX

...... ............. Colusa County

. . .X

. .......... . ... Glenn out..

.... X

....... Shasta County (Sacramento Valley AirBasin Portion)..... X

... ........................ Sutter County-

.... .. . ................ Tehama County.-

... : :-:.

.. X

. . .............. Yuba County--........

. X

............... GreatBasin Valleys AirBasin--. X

............... Northeast Plateau AirBasin ---.. ................. Los Angeles County (S.1. Desert Air Basin PorRiverside County (S.E.Desert AQMA Portion)~.... X San Bernardino County (S.E. Desert AQMA Portion)

FEDERAL REGISTER, VOL 44, NO. 54-MONDAY, MARCH 19, 1979RULES AND REGULATIONS 16393

CALxFORN -TSP--Contnued

Doesnot Does not Better than Designated area meet meet Cannotbe national prlmary secondary clssaed standards standards standards

Riverside County (non-AQMA Portion) * X San Bernardino (non-AQMA Portion)_

_ _ _ Lake Tahoe AirBasin__ SanFrancisco Bay Area AirBasin: Solano County (S.F. Bay Area AirBasinPortion)

_

_ SanMateo County

. Marln County

.. ..... X Napa County.

- ..... .X Sonoma County(S.F. Bay Area AirBasin Portion). X Alameda County X Rest ofState_........._ X Mountain Counties AirBasin: Placer County (AQMA Portion) X Placer County (excluding AQUA Portion and Lake Tahoe Portion)___ X Amdor County____________ X Calaveras County -_ El Dorado County (excluding iake Tahoe Air BasinPortion) X Mardposa County X Nevada County X Plumas County

... . X Sierra County X Tuolumne County X Southeast DesertAirBasin: KernCounty (S.Y. DesertAir BasinPortion)

. X Imperial County X
CAIFORI-SO,

South Central CoastAir Basin' SanLuLs Obispo County X Santa Barbara County (AQMA Portion)__ X San Barbara County (non-AQMA Portion)

- X Ventura County X Channel Islan" X San Diego AirBasin: SanDiego County(West Portion)

. SanDiego County(East Portion) K South Coast AirBasin: Los Angeles County (South Coast Air Basin Por- tion) X Orange County X Riverside County (SouthCoastAir BasinPortion)

. X

CALMrRNIA-CO

Does not Cannot be meet classified or Designated area primary betterthan standards national standards

SanJoaquln ValleyAir Basin: Fresno County X Kern County(SJVAB Portion) X

Maden County Merced County SanJoaquin County X Stanislaus County K Tulare County

...... X Sacramento Valley Air Basin: Sacramento County X Solano County(SVAB Portion) Yolo'County Butte County X Colusa County

. Glenn County Shasta County(SVAB Portion) Sutter County Tehama County LosAngeles County(SYB.Desert AirBasin Portion) Riverside County (S.E. Desert AQMA Portion) San Bernardino4non-AQMA Portion) Riverside County (non-AQMA Portion) San Bernardino (non-AQMA Portion) Lake Tahoe AirBasin X X X X

X

X
X X X X X X X X K K

3. In 81.353-Guam. the attainment designation table Is revised. § 81.353 Guam.

GQum-TSP

Does not Ekoes not Betterthan Designated area meet meet Cannotbe national primary secondary classified standards standards standards

Whole State A x

EPAdesignation replaces State designation.
[FR Do=. 79-8048 Filed 3-16-79; 8:45 am]

FEDERAL REGISTER, VOL 44, NO. 54-MONDAY, MARCH 19, 1979