EPA Acting Regional Administrator Alexis Strauss signed the following rule on August 15, 2016 

and the EPA is submitting it for publication in the Federal Register (FR). While we have taken 

steps to ensure the accuracy of this version of this rule, it is not the official version. Please refer 

to the official version in a forthcoming FR publication appearing on the Government Printing 

Office website, https://www.gpo.gov/fdsys/, and on www.regulations.gov in Docket Number 

EPA-R09-OAR-2016-0096.

6560-50-P

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R09-OAR-2016-0096; FRL-]

Air Plan Approval; Reno, Nevada; Second 10-Year Carbon Monoxide Maintenance Plan

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

SUMMARY: The Environmental Protection Agency (EPA) is taking direct final action to 

approve a State Implementation Plan (SIP) revision submitted by the State of Nevada. On July 3, 

2008, the EPA redesignated the Truckee Meadows area, consisting largely of the cities of Reno 

and Sparks in Washoe County, Nevada, from nonattainment to attainment for the carbon 

monoxide (CO) National Ambient Air Quality Standards (NAAQS) and approved the State’s 

plan addressing the area’s maintenance of the NAAQS for ten years. On November 7, 2014, the 

State of Nevada submitted to the EPA a second maintenance plan for the Truckee Meadows area 

that addressed maintenance of the NAAQS through 2030. The EPA is now approving this second 

maintenance plan. The EPA is also finding adequate and approving transportation conformity 

motor vehicle emissions budgets (MVEBs) for the years 2015, 2020, 2025 and 2030. We are 

taking these actions under the Clean Air Act (CAA or “the Act”). 

DATES: This rule is effective on [Insert date 60 days after the date of publication in the 

Federal Register] without further notice, unless the EPA receives adverse comments by [Insert 
This document is a prepublication version signed by EPA Acting Regional Administrator Alexis 

Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

2

date 30 days after the date of publication in the Federal Register]. If we receive such 

comments, we will publish a timely withdrawal in the Federal Register to notify the public that 

this direct final rule will not take effect.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R09-OAR-2016-0096

at http://www.regulations.gov, or via email to John Kelly, Air Planning Office at 

kelly.johnj@epa.gov. For comments submitted at Regulations.gov, follow the online instructions 

for submitting comments. Once submitted, comments cannot be removed or edited from 

Regulations.gov. For either manner of submission, the EPA may publish any comment received 

to its public docket. Do not submit electronically any information you consider to be 

Confidential Business Information (CBI) or other information whose disclosure is restricted by 

statute. Multimedia submissions (audio, video, etc.) must be accompanied by a written comment. 

The written comment is considered the official comment and should include discussion of all 

points you wish to make. The EPA will generally not consider comments or comment contents 

located outside of the primary submission (i.e., on the web, cloud, or other file sharing system). 

For additional submission methods, please contact the person identified in the “FOR FURTHER 

INFORMATION CONTACT” section. For the full EPA public comment policy, information 

about CBI or multimedia submissions, and general guidance on making effective comments, 

please visit http://www2.epa.gov/dockets/commenting-epa-dockets. 

FOR FURTHER INFORMATION CONTACT: John Kelly, EPA Region IX, (415) 947-4151, 

kelly.johnj@epa.gov.

SUPPLEMENTARY INFORMATION: Throughout this document, “we,” “us,” and “our” 
This document is a prepublication version signed by EPA Acting Regional Administrator Alexis 

Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

3

refer to the EPA.

Table of Contents

I. Background

A. Truckee Meadows Attainment Status

B. 2014 Maintenance Plan

C. Transportation Conformity

II. The EPA’s Evaluation of Nevada’s Submittal

A. Ambient Air Quality Monitoring Data

B. Attainment Inventory

C. Maintenance Demonstration

D. Transportation Conformity

E. Ambient Air Quality Monitoring Network

F. Verification of Continued Attainment

G. Contingency Plan

III. Public Comment and Final Action

IV. Statutory and Executive Order Reviews

I. Background

A. Truckee Meadows Attainment Status

Under the CAA Amendments of 1990, the Truckee Meadows area (hereinafter referred to 

as Truckee Meadows, the Truckee Meadows area or the area), which includes the Reno-Sparks 

metropolitan area in Washoe County, Nevada, was designated and classified as a moderate CO 

nonattainment area.1

The primary CO NAAQS are attained when ambient concentration design values do not 

exceed either the 1-hour 35 parts per million (ppm) (or 10 milligrams per cubic meter) standard 

 1 For a detailed description of air quality planning in the area, see the EPA’s proposal to approve the first 10-year 

maintenance plan, published in the Federal Register on January 7, 2008, 73 FR 1175 at 1177. The CO attainment 

table in 40 CFR 81.329 lists the area as “Reno Area: Washoe County (part) Truckee Meadows Hydrographic Area 

87.”
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not the official version.

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or the 8-hour 9 ppm (or 40 milligrams per cubic meter) standard more than once per year. See 40 

CFR 50.8(a). According to monitoring data going back to 1980 in the EPA’s2 Air Quality 

System (AQS), Truckee Meadows has not had a violation of the 1-hour CO standard.

3 Regarding 

the 8-hour standard, the area has not had a violation since 1991.4 The EPA determined in 2005 

that the area had attained the CO NAAQS by the area’s December 31, 1995 attainment deadline. 

See 70 FR 22803 (May 3, 2005). This determination did not affect the designation of the area as 

nonattainment or its classification as a moderate area.

On November 4, 2005, the State of Nevada (“State” or “Nevada”) submitted a request to 

the EPA to redesignate Truckee Meadows from nonattainment to attainment for the CO NAAQS. 

Along with this request, the State submitted a CAA section 175A(a) maintenance plan, which 

demonstrated that the area would maintain the CO NAAQS for the first 10 years following our 

approval of the redesignation request (“2005 Maintenance Plan”). We approved the State’s 

redesignation request and 10-year maintenance plan on April 2, 2008. See 73 FR 38124 (July 3, 

2008). For a detailed history of the CO planning efforts in the area up to 2005, please see the 

EPA’s proposal to approve the 2005 Maintenance Plan. See 73 FR 1175 at 1177 (January 7, 

2008).

 2 The initials EPA, and the words “we,” “us,” or “our” mean or refer to the United States Environmental Protection 

Agency.

3 See Truckee Meadows 1980-2016 1-Hour CO Violation Day Count Report, data pulled from AQS on August 1, 

2016. 4 2014 Maintenance Plan, page 1. See also, Truckee Meadows 1991-2016 8-Hour CO Violation Day Count Report,

data pulled from AQS on August 1, 2016, which verifies the District’s assertion in the 2014 Maintenance Plan that 

there have been no 8-hour CO violations in the Truckee Meadows area since 1991. This report also includes more 

recent monitoring data (up through the first quarter of 2016) than the 2014 Maintenance Plan.
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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B. 2014 Maintenance Plan

Eight years after an area is redesignated to attainment, CAA section 175A(b) requires the 

State to submit a subsequent maintenance plan to the EPA, covering a second 10-year period. 5

The second maintenance plan must demonstrate continued compliance with the NAAQS during 

this second 10-year period. To fulfill this requirement of the CAA, Nevada submitted the second 

10-year update of the Truckee Meadows area CO maintenance plan to the EPA on November 7, 

2014. The plan was developed by the Washoe County Health District’s (District) Air Quality 

Management Division (AQMD) and is titled “Second 10-Year Maintenance Plan for the Truckee 

Meadows 8-Hour Carbon Monoxide Attainment Area, August 28, 2014” (hereinafter, “2014 

Maintenance Plan” or “Plan”). The 2014 Maintenance Plan was adopted by the District’s Board 

of Health on August 28, 2014. See Washoe County Board of Health Certificate of Adoption, 

August 28, 2014. Air quality planning and monitoring in Truckee Meadows is the responsibility 

of the District, which administers air quality programs in Washoe County through the AQMD.

The State Environmental Commission and the Nevada Department of Motor Vehicles are 

responsible for the motor vehicle inspection and maintenance program in Truckee Meadows.

C. Transportation Conformity

Section 176(c) of the Act defines conformity as meeting the SIP's purpose of eliminating 

or reducing the severity and number of violations of the NAAQS and achieving expeditious 

attainment of such standards. The Act further defines transportation conformity to mean that no 

 5 In this case, the initial maintenance period extends through 2018. Thus, the second 10-year period must extend at 

least through 2028. The District’s demonstration is for maintenance through 2030.
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not the official version.

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Federal transportation activity will: (1) cause or contribute to any new violation of any standard 

in any area; (2) increase the frequency or severity of any existing violation of any standard in any 

area; or (3) delay timely attainment of any standard or any required interim emission reductions 

or other milestones in any area. The federal transportation conformity rule, 40 CFR part 93 

subpart A, sets forth the criteria and procedures for demonstrating and assuring conformity of 

transportation plans, programs and projects which are developed, funded or approved by the U.S. 

Department of Transportation, and by metropolitan planning organizations or other recipients of 

Federal funds under Title 23 U.S.C. or the Federal Transit Laws.

The transportation conformity rule applies within all nonattainment and maintenance 

areas. As prescribed by the transportation conformity rule, once an area has an applicable SIP 

with MVEBs, the expected emissions from planned transportation activities must be consistent 

with such established budgets for that area.

II. The EPA’s Evaluation of Nevada’s Submittal

The 2014 Maintenance Plan contains the following major sections: 1) an introductory 

section containing a general discussion of plan approvals and the area’s redesignation to 

attainment; and 2) a maintenance plan section including subsections on the attainment emissions 

inventory, a maintenance demonstration, MVEBs, the area’s monitoring network, verification of 

continued attainment, and a contingency plan. See 2014 Maintenance Plan, Chapters 1 and 2.

Following is the EPA’s evaluation of the 2014 Maintenance Plan under the CAA, the 

EPA’s implementing regulations and relevant guidance.

A. Ambient Air Quality Monitoring Data
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As noted above, the primary NAAQS for CO are: 9 ppm (or 10 milligrams per cubic 

meter) for an 8-hour average concentration not to be exceeded more than once per year and 35 

ppm (or 40 milligrams per cubic meter) for a 1-hour average concentration not to be exceeded 

more than once per year. See 40 CFR 50.8(a).

The 2014 Maintenance Plan includes a summary of 8-hour CO design values for the 

years 2008 to 2013. See 2014 Maintenance Plan, Table 1-1, page 2. In addition, the EPA 

examined monitoring data for Truckee Meadows for the last ten years, including a large portion 

of the period covered by the first maintenance plan. Table 1 shows the complete, quality assured 

and certified ambient air monitoring design values for CO in the area for the years 2006 to 2015

and preliminary data for 2016. The first maintenance plan covers the years 2008–2018. The year 

2015 is the last year for which we have complete, quality assured and certified ambient air 

monitoring design values for CO in the area. The monitoring data show that CO design values in 

the Truckee Meadows area have been well below the level of the NAAQS throughout the last 

decade. 

Table 1. CO Design Values for Truckee Meadows, NV, years 2006-2015

Design Values (ppm)6

Years

1-Hour 8-Hour

4.8 3.3 2006

4.7 3.3 2007

 6 Design values were derived from AQS. The EPA notes that the 8-hour CO design value given in the 2014 

Maintenance Plan for the year 2011 (i.e., 2.9 ppm) appears to be in error and should actually be as shown (i.e., 2.6 

ppm). For 1-hour CO design values, see the Truckee Meadows 1-Hour CO 2006-2016 Maximum Values Report, 

dated August 1, 2016. For 8-hour CO design values, see the Truckee Meadows 8-Hour CO 2006-2016 Maximum 

Values Report, dated August 1, 2016.
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3.9 2.9 2008

4.2 2.6 2009

3.1 2.6 2010

3.4 2.6 2011

2.8 2.3 2012

2.8 2.4 2013

3.2 2.4 2014

2.7 2.0 2015

2.2 1.5 20167

B. Attainment Inventory

Due to the area’s status at the time as moderate nonattainment for the CO standards, the 

District developed a 1990 baseline emissions inventory and has continued to update the 

inventory pursuant to CAA requirements every three years. The most recent inventory at the time 

the state submitted the 2014 Maintenance Plan was for the year 2011. The District is using the

2011 emissions inventory, adjusted down due to unusually high wildfire emissions that occurred 

that year, as the attainment inventory. The District refers to this attainment inventory as the 

Truckee Meadows maintenance emissions limit. With the level of emissions that occurred in 

2011, the area still attained the CO standards. Levels at or below the downward-adjusted 2011 

emissions (that is, the Truckee Meadows maintenance emissions limit) are therefore expected to 

maintain the standards. The unadjusted emissions levels are presented in Table 2. The District 

then adjusts the nonpoint source category to reflect more representative wildfire emissions, and 

then uses the adjusted total emissions for the area as the maintenance emissions limit, as 

 7 Preliminary design values for 2016 through March 31, 2016. See Truckee Meadows 2016 1-hour Completeness 

Report, dated August 1, 2016.
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explained in section III.C below.

Table 2. 2011 CO Inventory 

Source Category 2011 Inventory

(pounds per day)

Point 3,361

Nonpoint 154,956

Non-road 50,706

On-road 163,500

Total* 372,522

*Totals may not add up due to rounding.

The EPA finds that the 2011 inventory information presented by the District is acceptable 

and consistent with the source category amounts and totals for the 2011 National Emissions 

Inventory for Washoe County, with one exception. The District’s information does not account 

for railroad (locomotive) emissions. Locomotive emissions would add 3.6 tons per year of CO 

emissions to the area, or 19.7 pounds per day (lbs/day). Compared to a total inventory of 372,522

lbs/day, however, the omission of railroad emissions amounts to less than 0.01% of the total CO 

emissions for the area, and the EPA therefore does not believe the omission to be significant.

C. Maintenance Demonstration

In general, a state may demonstrate that an area will maintain the NAAQS by showing 
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not the official version.

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that future emissions will not exceed the level of the attainment inventory.8 Attainment must be 

demonstrated for the 10-year period following the first ten years covered by the initial 

maintenance plan. For the Truckee Meadows area, the first maintenance period ranges from 

2008, when the EPA approved the area’s redesignation request and maintenance plan, through 

the year 2018. In the 2014 Maintenance Plan, the District must also demonstrate attainment for 

the 10-year period following the first ten years. The 2014 Maintenance Plan covers a portion of 

the first 10-year period (through 2018), as well as the second ten years, 2018 through 2028. In 

addition, a state may go beyond the minimum requirements of the CAA. The District has elected 

to make the horizon year for this Plan 2030 for the convenience of transportation planning.

Although the 2005 Maintenance Plan addresses maintenance through the year 2018, the 

emissions projections of the 2014 Maintenance Plan replace those from the previous plan. The 

District’s rationale is that there are now better planning assumptions and improved emissions 

calculation methodologies that were not available in developing the previous plan. Updated 

methodologies include the change from using MOBILE6 mobile source modeling software, used 

for the 2005 Maintenance Plan, to the MOVES model used for the 2014 Maintenance Plan.

As noted above, the District used its 2011 periodic emissions inventory9 to develop the 

baseline 2011 “maintenance emissions limit” for the Truckee Meadows area, which is then used 

 8 See the EPA’s September 4, 1992 John Calcagni memorandum entitled “Procedures for Processing Requests to 

Redesignate Areas to Attainment,” at page 9, available online at:

https://www.epa.gov/sites/production/files/2016-03/documents/calcagni_memo_-

_procedures_for_processing_requests_to_redesignate_areas_to_attainment_090492.pdf 9 See Washoe County, Nevada: 2011 Periodic Emissions Inventory and Appendices A, B, and C.
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to compare future emissions inventories for the purpose of verifying continued attainment of the 

CO NAAQS as long as those future emissions are lower than the maintenance emissions limit.

As shown in Table 3, for most emissions categories, the District simply used emission

levels from the 2011 periodic emissions inventory to develop its 2011 maintenance emissions 

limit. However, for wildfires, the District noted that 2011 was an unusually active year for 

wildfires, with corresponding CO emissions of 105,092 lbs/day. To approximate more typical

wildfire emissions for purposes of producing the 2011 Truckee Meadows maintenance emissions

limit, the District used the average of wildfire emissions for the four previous inventory years

(1999, 2002, 2005, and 2008). That average is 217 lbs/day, which the District used to adjust the 

nonpoint source category. Due to this adjustment, total nonpoint emissions for the nonpoint 

source category are 50,081 lbs/day for the maintenance emissions limit, as compared with 

154,956 lbs/day in the 2011 emissions inventory, as shown in Table 3. See 2014 Maintenance 

Plan, Table 2-3.

Table 3. Truckee Meadows CO Emissions Inventories, in pounds per day

Source Category

2011 2011

Periodic Inventory (lbs/day) Maintenance Emissions Limit

(lbs/day)

Point 3,361 3,361

Nonpoint 154,956 50,081

Non-Road Mobile 50,706 50,706

On-Road Mobile 163,500 163,500

Total* 372,522 267,648

* Totals may not add up due to rounding

The District supports its use of 267,648 lbs/day maintenance emissions limit as the 
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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attainment inventory because it uses the most accurate emissions inventory methodologies, is a 

current and comprehensive emissions inventory, identifies the level of emissions in the Truckee 

Meadows area sufficient to maintain the CO standards, and will be the emissions inventory most 

consistent with the 2030 projected inventory required for demonstrating maintenance of the CO 

standards. See 2014 CO Maintenance Plan, page 6.

The District used the following methodologies or models, as described in EPA 

guidance,

10 to project the 2011 maintenance emissions limit (i.e. the 2011 periodic emissions 

inventory adjusted to exclude unusually high wildfire emissions) out to future milestone years 

2015, 2020, 2025 and 2030 for each of the emissions source categories, in order to demonstrate 

continued maintenance with the CO NAAQS.

1. Baseline Emissions Projections. Washoe County’s 2030 population, employment and 

vehicle miles travelled (VMT) forecasts (2014 Maintenance Plan, Appendix A) were used as 

surrogates to project the 2030 emissions, and were consistent with those used by the local 

metropolitan planning organization.

2. EPA Models. Non-road and on-road motor vehicle categories accounted for 

approximately 59% of the 2011 emissions inventory. To ensure consistency throughout the 

maintenance demonstration period, the same non-road and on-road models were used to estimate 

the 2030 projected emissions inventory.

3. Emissions Category Surveys. The District uses surveys to estimate emissions from

 10 See “Procedures for Preparing Emissions Projections,” EPA-450/4-91-019, July 1991, available online at 

https://www.epa.gov/nscep.
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residential wood combustion (RWC). The District applied an adjustment factor based on heating 

degree days to the most recent survey (conducted in 2012-2013) to project RWC emissions from 

2015 through 2030. See 2014 Maintenance Plan, Appendix A.1

Table 4 lists the 2011 Truckee Meadows maintenance emissions limit and projected 

emissions for 2015, 2020, 2025 and 2030 for the four major CO emissions source categories in 

the area. See 2014 Maintenance Plan, Table 2-4. The District provides a more detailed inventory 

for 2011 and projected future years in the 2014 Maintenance Plan, Appendix B.

Table 4. Truckee Meadows CO Maintenance Emissions Inventories (lbs/day)

Source 

Category 2011* 2015 2020 2025 2030

Point 3,361 3,768 4,357 4,974 5,678

Nonpoint 50,081 47,820 45,236 42,845 40,355

Non-Road 50,706 43,725 45,385 48,320 51,656

On-Road 163,500 150,330 140,129 138,938 142,686

Total** 267,648 245,642 235,107 235,077 240,375

* Truckee Meadows maintenance emissions limit

** Totals may not add up due to rounding

The District projects that population, number of households, employment and VMT will 

increase through 2030 and beyond, but that federally enforceable CO control programs targeting 

gasoline-powered motor vehicles, RWC and diesel-powered motor vehicles will help offset this 

growth. Because future emissions are not projected to exceed the level of the 2011 Truckee 

Meadows maintenance emissions limit of 267,648 lbs/day, the District asserts that the CO 

NAAQS will be maintained through the maintenance demonstration period.11

 11 Although the summary paragraph following Table 2-4 in the plan compares future year projections shown in the 
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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The EPA agrees with the District’s conclusion. Even with the growth expected in the area 

in the future, overall emissions of CO in the area are declining and provide assurance that the 

area will not violate the CO standard in the future. With respect to wildfire emissions, we find 

that the District’s approach of adjusting both the attainment inventory (i.e., the maintenance 

emissions limit) and the projected future year emissions inventories to exclude unusually high 

2011 wildfire emissions is reasonable. 

D. Transportation Conformity

Transportation conformity is required by section 176(c) of the CAA. Conformity to a SIP 

means that transportation activities will not produce new air quality violations, worsen existing 

violations, or delay timely attainment of the NAAQS. See CAA section 176(c)(1)(B). The EPA’s 

conformity rule at 40 CFR part 93, subpart A requires that transportation plans, programs and 

projects conform to SIPs and establishes the criteria and procedures for determining whether or 

not they conform. To effectuate its purpose, the conformity rule generally requires a 

demonstration that emissions from the Regional Transportation Plan and the Transportation 

Improvement Program are consistent with the MVEBs contained in the applicable control 

strategy SIP revision or maintenance plan. See 40 CFR 93.101, 93.118, and 93.124. An MVEB is 

defined as the level of mobile source emissions of a pollutant relied upon in the attainment or 

maintenance demonstration to show compliance with the NAAQS in the nonattainment or 

 

table to the “2011 Truckee Meadows maintenance emissions inventory,” EPA believes that the District clearly 

intended to make the comparison to the “Truckee Meadows Maintenance Emissions Limit,” as the District stated in 

this single-asterisk (*) note to the table. See 2014 Maintenance Plan, page 7.
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maintenance area.12

The EPA’s process for determining adequacy of a MVEB consists of three basic steps: 

(1) notifying the public of a SIP submission; (2) providing the public the opportunity to comment 

on the MVEB during a public comment period; and, (3) making a finding of adequacy or

inadequacy. See 40 CR 93.118(f). In order for us to find an MVEB adequate and approvable, the 

submittal must meet the conformity adequacy provisions of 40 CFR 93.118(e)(4) and (5). The 

2005 Maintenance Plan established CO MVEBs (in terms of pounds per typical CO season day) 

of 330,678 pounds per typical CO season day in year 2010 and 321,319 pounds per typical CO 

season day in year 2016. The EPA found the CO MVEBs adequate for transportation conformity 

purposes effective March 30, 2006 (March 15, 2006, 71 FR 13386)13 and approved the MVEBs 

on July 3, 2008 (73 FR 38124).

The 2014 Maintenance Plan establishes new MVEBs for CO, as shown in Table 5.

Table 5. Transportation Conformity Motor Vehicle Emissions Budgets for the Truckee 

Meadows CO Maintenance Area (lbs/day)

Year 2015 2020 2025 2030

CO MVEB 172,336 172,670 171,509 169,959

 12 Further information concerning the EPA’s interpretations regarding MVEBs can be found in the preamble to the 

EPA’s November 24, 1993, transportation conformity rule (see 58 FR 62193 – 62196). 13 See also letter from Deborah Jordan, Director, U.S. EPA Region 9 Air Division, to Leo M. Drozdoff, P.E., 

Director, Nevada Division of Environmental Protection, dated February 14, 2006, available online at: 

https://www3.epa.gov/otaq/stateresources/transconf/adequacy/ltrs/truckee033006.pdf. 
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The District developed these MVEBs using emissions inventory projections for the years 

2015 through 2030. The MVEBs include on-road vehicles, heavy duty diesel vehicle idling, and 

a safety margin. The latter is the excess emissions between the total projected emissions for a 

specific year and the 2011 maintenance emissions limit. We note that the MVEBs in the 2014 

Maintenance Plan differ from those contained for similar years in the 2005 Maintenance Plan. 

These differences are due to the use of the latest planning assumptions for the transportation 

network, including VMT, vehicle speeds and vehicle population for passenger cars and trucks, in 

the development of the Washoe County 2011 periodic emissions inventory. As in previous 

periodic emissions inventories, these planning assumptions were consistent with those used by 

the local metropolitan planning organization for their transportation plans.

We are not announcing the availability of these MVEBs through the EPA’s Adequacy 

website and providing a separate comment period on the adequacy of the MVEBs. Instead, we 

are reviewing the adequacy of the MVEBs simultaneously with our review of the 2014 

Maintenance Plan itself. See 40 CFR 93.118(f)(2). In order to determine whether these MVEBs 

are adequate and approvable, we have evaluated whether the MVEBs meet the conformity 

adequacy provisions of 40 CFR 93.118(e)(4) and (5) and have determined that the MVEBs meet 

the applicable criteria. These criteria include, for example, that the MVEBs are clearly identified 

and precisely quantified, that the Plan shows a clear relationship among the emissions budgets, 

control measures and the total emissions inventory, among other criteria. The details of the 
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EPA’s evaluation of the MVEBs are provided in a memo to file for this rulemaking.14

In accordance with the State’s request and the EPA’s evaluation, with this action the EPA 

finds adequate and approves CO MVEBs for the years 2015, 2020, 2025 and 2030. Upon the 

effective date of this action, the Washoe County Regional Transportation Commission and the 

U.S. Department of Transportation must use these budgets in future conformity analyses. Any 

and all comments on the adequacy and approvability of the 2015, 2020, 2025 or 2030 MVEBs

should be submitted during the comment period stated in the DATES section of this document.

E. Ambient Air Quality Monitoring Network

The District has maintained an ambient air quality monitoring network in Washoe 

County, including the Truckee Meadows area, in accordance with the EPA’s ambient air quality 

monitoring network regulations in 40 CFR part 58. Monitors are operated by the District, and 

they submit an Annual Network Plans (ANPs) for the County to the EPA.

The EPA is currently reviewing the 2016 ANP submitted by the District.

15 The EPA 

approved the District’s previous ANPs, the most recent three of which were submitted to the 

 14 See memo from John J. Kelly, Air Planning Office, EPA Region 9, to Docket EPA-R09-OAR-2016-0096, dated 

August 5, 2016.

15 “Washoe County Health District Air Quality Management Division 2016 Ambient Air Monitoring Network Plan,”

dated July 1, 2016.
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EPA by the District in 2013,16 201417 and 2015.18 The docket to this action includes these

approvals and the associated ANPs, as well as the ANP currently under review.

In addition to reviewing the District’s ANPs, the EPA performs Technical Systems 

Audits (TSAs) of ambient air monitoring programs in accordance with 40 CFR part 58, appendix 

A, section 2.5, which requires that the EPA conduct a TSA of each primary quality assurance 

organization (PQAO) every three years. A PQAO is an organization that is responsible for a set 

of stations that monitor the same pollutant and for which data quality assessments can be pooled. 

The District is the PQAO for CO monitoring in Washoe County, which includes the Truckee 

Meadows area. See 40 CFR 58.1.

The most recent TSA for the District was conducted by the EPA in 2016, but the report 

for that TSA has not yet been finalized. The most recent TSA for which the final report is 

available was conducted in 2013. The EPA found that the District’s air monitoring program was

robust and met the EPA’s requirements. There were no findings that were cause for data 

invalidation.19

 16 “Washoe County Health District Air Quality Management Division 2013 Ambient Air Monitoring Network Plan,” 

dated July 1, 2013 and our approval, letter from Meredith Kurpius, Manager, Air Quality Analysis Office, U.S. EPA 

Region 9 to Daniel Inouye, Chief, Monitoring and Planning Branch, Air Quality Management Division, Washoe 

County Health District, dated December 11, 2013. 17 “Washoe County Health District Air Quality Management Division 2014 Ambient Air Monitoring Network Plan,” 

dated July 1, 2014 and our approval, letter from Meredith Kurpius, Manager, Air Quality Analysis Office, U.S. EPA 

Region 9 to Daniel Inouye, Chief, Monitoring and Planning, Air Quality Management Division, Washoe County 

Health District, dated October 29, 2014. 18 “Washoe County Health District Air Quality Management Division 2015 Ambient Air Monitoring Network Plan,” 

dated July 1, 2015 and our approval, letter from Meredith Kurpius, Manager, Air Quality Analysis Office, U.S. EPA 

Region 9 to Daniel Inouye, Chief, Monitoring and Planning, Air Quality Management Division, Washoe County 

Health District, dated October 21, 2015. 19 See letter from Deborah Jordan, Director, U.S. EPA Region 9 Air Division, to Charlene Albee, Director, Air 
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not the official version.

19

In the 2014 Maintenance Plan, the District commits to continued operation of its CO 

monitoring network, in accordance with 40 CFR part 58, to verify the attainment status of the 

Truckee Meadows area. See 2014 Maintenance Plan, page 8. In addition, the District will 

continue to review the Washoe County CO monitoring network pursuant to 40 CFR 58.10 to 

ensure the network meets the monitoring objectives defined in 40 CFR part 58, appendix D.

Funding for the monitoring network to meet its objectives has been derived in the past primarily 

from CAA section 105 grants and the State’s Department of Motor Vehicles. The District 

commits to maintaining these funding sources. See 2014 Maintenance Plan, page 8.

The District commits to the continuation of collecting and quality-assuring ambient CO 

monitoring data in accordance with 40 CFR part 58 and to providing the data to the EPA’s AQS. 

The data will therefore be available for public review. See 2014 Maintenance Plan, page 9.

Table 6 lists the active Washoe County CO monitoring sites identified in the Plan. See 

2014 Maintenance Plan, page 9, Table 2-7. As noted in the footnotes to the table, two of the 

monitoring sites have since discontinued CO monitoring (i.e., South Reno and Galletti), and the 

District has indicated that it intends to submit to the EPA a request to shut down two more sites 

(i.e., Toll and Lemmon Valley). The EPA notes that the Lemmon Valley monitoring site is 

within Washoe County but is not located in the Truckee Meadows area.

Table 6. Active Washoe County CO Monitoring Sites

Site ID Site Name Site address City

 

Quality Management Division, Washoe County Health District, dated August 19, 2014, transmitting a report titled 

“Technical System Audit Report, Washoe County Health District Air Quality Management Division Ambient Air 

Monitoring Program (September 4-6, 2013).”
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32-031-0016 Reno3 301A State Street Reno

32-031-0020 South Reno* 4110 DeLucchi Lane Reno

32-031-0022 Galletti* 305 Galletti Way Reno

32-031-0025 Toll** 684A State Route 341 Reno

32-031-1005 Sparks 750 4th Street Sparks

32-031-2009 Lemmon Valley** 325 W. Patrician Drive Reno

* The District discontinued CO monitoring at the South Reno and Galletti monitoring 

sites in 2014. Details of these network modifications, as well as copies of the EPA’s 

approval letters, can be found in the District’s 2015 ANP (Appendices A and B).

** In its 2016 ANP, the District indicates it will seek EPA approval to discontinue CO 

monitoring at the Toll and Lemmon Valley monitoring sites, but will not discontinue 

monitoring at these locations without such approval. See the District’s 2016 ANP.

The District is required to maintain a CO monitor at the Reno3 site. See 40 CFR part 58, 

appendix D, section 3. Other CO monitoring sites are not required for Washoe County by the 

EPA’s minimum monitoring requirements. See 40 CFR part 58, appendix D, section 4.2.

Based on the information in the 2014 Maintenance Plan, as well as recent ANPs and the

2013 TSA report, the EPA has determined that the area's air quality monitoring network meets

the requirements of the CAA and implementing regulations in 40 CFR part 58.

F. Verification of Continued Attainment

To support the District’s continued operation and maintenance of the Washoe County 

ambient CO monitoring network, the District also commits to tracking actual CO emissions, in 

order to identify potential increases in ambient CO concentration. The District has three existing 

mechanisms to track CO emissions.

1. Periodic Emissions Inventories. The District commits to continuing to prepare and submit 

to the EPA a comprehensive periodic CO emissions inventory on a triennial schedule. Prior to 
This document is a prepublication version signed by EPA Acting Regional Administrator Alexis 

Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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submittal of the 2014 Maintenance Plan, the last periodic emissions inventory prepared was for 

the year 2011. See 2014 Maintenance Plan, page 9. In addition, the District has prepared and 

submitted to the EPA a periodic emissions inventory for the area for 2014.

2. Consolidated Emissions Reporting Rule (CERR) and Air Emissions Reporting Rule 

(AERR). The EPA’s AERR (40 CFR part 51 subpart A), which incorporates the former CERR, 

requires regular updates of point and area emissions sources within Washoe County. The District 

commits to continued compliance with the CERR and AERR. See 2014 Maintenance Plan, page 

10.

3. Residential Wood Use Survey. RWC is a significant source of CO emissions during the 

winter in Truckee Meadows. Between 1993 and 2013, the District completed nine residential 

wood use surveys. These surveys estimated the device (i.e., fireplace, woodstove and pellet 

stove) population, the amount of wood burned, and CO emissions from RWC in Washoe County. 

As part of the 2014 Maintenance Plan, the District renews the commitment it made in the 2005 

Maintenance Plan to conduct a residential wood use survey at least once every three years. See 

2014 Maintenance Plan, page 10.

The EPA agrees with the District that continued ambient air monitoring and emissions 

tracking will ensure verification of continued attainment and maintenance of the 8-hour CO 

NAAQS within the Truckee Meadows area.

G. Contingency Plan

Section 175A of the CAA requires that a maintenance plan include contingency 

provisions, as necessary, to promptly correct any violation of a NAAQS that occurs after the 
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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redesignation to attainment of an area for that NAAQS. As a maintenance area for CO, this 

requirement applies to Truckee Meadows. According to the EPA’s guidance,20 the contingency 

plan for a maintenance area should clearly identify the following:

• specific indicators or triggers that will be used to determine when contingency measures 

need to be implemented;

• contingency measures to be adopted;

• schedule and procedures for adoption and implementation; and

• specific time limit for action.

The following is the EPA’s analysis of the 2014 CO Maintenance Plan’s contingency 

plan regarding the above four criteria:

The 2014 Maintenance Plan identifies significant sources that contribute to the highest 

CO concentrations during the winter CO season months, November through January. The 2014 

Maintenance Plan includes a two-tiered contingency plan based on ambient air monitoring data.

As part of the EPA’s approval into the SIP of the 2005 Maintenance Plan, we approved a 

contingency plan for the area. Part of the contingency plan (“Tier 1”), as discussed in greater 

detail below, relies entirely on the area’s emergency episode plan. Such plans are required under

CAA section 110(a)(2)(G). We approved the District’s emergency episode plan on June 18, 2007

(72 FR 33397).

 20 EPA’s September 4, 1992 memorandum entitled “Procedures for Processing Requests to Redesignate Areas to 

Attainment,” at page 12, available online at:

https://www.epa.gov/sites/production/files/2016-03/documents/calcagni_memo_-

_procedures_for_processing_requests_to_redesignate_areas_to_attainment_090492.pdf. 
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1. Contingency Plan Tier 1

a. Specific indicators or triggers which will be used to determine when contingency 

measures need to be implemented

The Tier 1 trigger mechanism is a single exceedance of the 8-hour CO standard, that is, a 

monitored concentration greater than or equal to 9 ppm (9.5 ppm to adjust for rounding), at any 

State and Local Air Monitoring Station (SLAMS), Special Purpose Monitoring (SPM) or 

national Core Multi-Pollutant Monitoring Station (NCore) site operated within Washoe County. 

The EPA notes that this trigger is protective of the 8-hour CO NAAQS in three respects. 

First, it takes two non-overlapping CO exceedances to violate the standard. The CAA 

requires that, at a minimum, contingency measures be triggered when the standard is violated. In 

the 2014 Maintenance Plan, the District is committing to triggering this Tier 1 portion of its 

contingency plan with a single exceedance. This entails implementation of a contingency 

measure upon an exceedance of the CO NAAQS, before the NAAQS is violated.

Second, the trigger for Tier 1 can occur at any monitor in the County. This is more 

protective of the CO NAAQS than would otherwise be required by the Act in that the District is 

required to trigger Tier 1 using an exceedance of any monitor in Washoe County, rather than 

relying only on the monitors within the Truckee Meadows maintenance area within the County.

Third, implementation of Tier 1 would occur in the entire jurisdiction of the District, that 

is, County-wide. Controls related to the Stage 1 Alert episode would be implemented in the 

entire County, which could benefit the Truckee Meadows area within the County.

b. The contingency measures to be adopted
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As we noted above, the EPA has already approved the District’s emergency episode plan 

into the SIP. This emergency plan currently is triggered, independent of any contingency plan, 

during any monitored or predicted concentration at a level of 9.4 ppm or above. Once the 

emergency plan is triggered, the duration of its implementation depends on the circumstances of 

the episode, regarding monitored and predicted levels of CO.

In the Tier 1 contingency measure, the District will initiate a rulemaking to permanently 

lower the County-wide Stage 1 Alert activation level from 9.4 ppm down to 9.0 ppm. The 

District will initiate this rulemaking if a monitored CO concentration is above 9.4 ppm (i.e., 9.5 

ppm or above). Monitors that can activate Tier 1 include any monitor in the entire County, that 

is, not just within the Truckee Meadows area. For informational purposes, Table 7 lists the 

actions the District takes once a Stage 1 Alert level is either recorded or predicted for the County. 

See 2014 Maintenance Plan, page 11. When Tier 1 is triggered, the District will initiate a specific 

rulemaking change for adoption by the District’s Board of Health (WCDBOH). In the event Tier 

1 is triggered, the District would initiate revision of WCDBOH Regulation 050.001, Emergency 

Episode Plan (adopted March 23, 2006). The rule revision would revise the Stage 1 Alert level 

from the current level of 9.4 ppm down to the lower level of 9.0 ppm.

Table 7. Stage 1 Alert Episode Actions

Stage 1 Alert Episode Action Description WCDBOH Regulation Number

Terminate open burning 040.035 and 050.001

Terminate use of incinerators subject to 

District operating permits 050.001

Curtailment of unnecessary motor vehicle use 

through the District’s public outreach 050.001
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program

Prohibition of the burning of solid fuel in any 

commercial or residential stoves and/or 

fireplaces with the Truckee Meadows area

040.051 and 050.001

Curtailment of all District permitted sources 

that have the potential to emit 50 tons or more 

of CO per year with the Truckee Meadows 

area

050.001

c. A schedule and procedures for adoption and implementation

The implementation schedule the District identifies in the 2014 Maintenance Plan is 

meant to begin the rulemaking process promptly. The rule revision must be adopted by the 

WCDBOH and implemented before the next CO season (i.e., November, December and 

January).

The District also commits to notify the EPA Region 9 office within 45 days of the 

triggering of tier 1. See 2014 Maintenance Plan, page 11.

d. A specific time limit for action

The schedule discussed above provides a specific time limit for action by the Board in 

that the rule revision is to be adopted and implemented before the next CO season.

2. Contingency Plan Tier 2

a. Specific indicators or triggers which will be used to determine when contingency 

measures need to be implemented

The Tier 2 trigger mechanism is a second, non-overlapping exceedance of the 8-hour CO 

standard (i.e., greater than or equal to 9.5 ppm to adjust for rounding) at any SLAMS, SPM or 
This document is a prepublication version signed by EPA Acting Regional Administrator Alexis 

Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

26

NCore site operated within Washoe County. The EPA notes that only a second non-overlapping 

exceedance at the same monitor would constitute a violation of the 8-hour CO NAAQS, so this 

approach is more protective of the standard than is required by the form of the standard itself. 

Also, the EPA notes that this trigger is also more protective of the CO NAAQS than is required 

because it goes beyond the boundary of the Truckee Meadows area and encompasses the entire 

Washoe County District.

b. The contingency measures to be adopted

For Tier 2, the District will maintain a list of potential contingency measures and provide 

recommendations to the WCDBOH. The District’s recommendations to the Board will include a 

timeline for adoption and implementation to promptly correct any violation of the CO NAAQS.

The list of Tier 2 potential contingency measures are shown in Table 8. See 2014 CO 

Maintenance Plan, Table 2-8.

Table 8. Tier 2 Potential Contingency Measures

Emission Category Potential Contingency Measure

Residential Wood Combustion

• Increase one-acre lot size exemption

• Mandatory curtailment at lower CO 

concentrations

• Change-out program to cleanerburning devices

Mobile Sources

• Strengthen inspection and 

maintenance smog check program

• Reinstate oxygenated fuels program

• Non-road and on-road diesel engine 

repowers and rebuilds

• Truck Stop Electrification systems

• Fleet modernization

• Strengthen maximum idling time for 
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

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diesel vehicles

c. A schedule and procedures for adoption and implementation

The implementation schedule the District identifies in the 2014 Maintenance Plan is 

meant to begin the rulemaking process promptly. No later than 45 days after Tier 2 is triggered, 

recommendations shall be presented to the Board at its next regularly scheduled meeting. The 

District commits to review and update as necessary the list of potential Tier 2 contingency 

measures at least once every three years. See 2014 Maintenance Plan, page 12. The District also 

commits to notify the EPA Region 9 office within 45 days of the triggering of Tier 2. See 2014 

CO Maintenance Plan, page 12.

d. A specific time limit for action

The schedule discussed above for Tier 2 implementation provides a specific time limit for 

action by the Board. Rule revision recommendations are to be presented to the Board within a set 

time frame, and the Board will review and update the recommendations, as necessary, but not 

less than once every three years. Further, the time frame for the District to provide 

recommendations to the Board requires the District to present at the Board’s next scheduled 

meeting, but no later than 45 days after triggering Tier 2. The Board typically meets every 

month. 

Tier 2 also involves a regular review of CO control measures by the District and the 

Board. This review occurs at least once every three years regardless of whether there is an 

exceedance of the CO NAAQS.
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3. Contingency plan conclusion

The EPA agrees with the District that prompt action and implementation of Tier 1 and 

Tier 2 contingency measures may prevent future exceedances and violations of the 8-hour CO 

NAAQS. The EPA believes the District’s two-tiered contingency plan will promptly address 

violations if they do occur. Triggering contingency measures at monitored concentration levels

that exceed, but do not violate the standard, is an important component of this approach.

III. Public Comment and Final Action

As authorized in section 110(k)(3) of the Act, the EPA is fully approving the State of 

Nevada’s second 10-year maintenance plan, titled “Second 10-Year Maintenance Plan for the 

Truckee Meadows 8-Hour Carbon Monoxide Attainment Area, August 28, 2014.” We are also 

approving MVEBs for the years 2015, 2020, 2025 and 2030.

We do not think anyone will object to these approvals, so we are finalizing them without 

proposing them in advance. However, in the Proposed Rules section of this Federal Register, 

we are simultaneously proposing approval of the same submitted Plan and MVEBs. If we receive 

adverse comments by [Insert date 30 days after date of publication in the Federal Register], 

we will publish a timely withdrawal in the Federal Register to notify the public that the direct 

final approval will not take effect and we will address the comments in a subsequent final action 

based on the proposal. If we do not receive timely adverse comments, the direct final approval 

will be effective without further notice on [Insert date 60 days after date of publication in the 

Federal Register]. This will incorporate this plan into the federally enforceable SIP and require 

use of the new MVEBs in all future CO conformity analyses.
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IV. Statutory and Executive Order Reviews

Under the CAA, the Administrator is required to approve a SIP submission that complies 

with the provisions of the Act and applicable federal regulations. 42 U.S.C. 7410(k); 40 CFR 

52.02(a). Thus, in reviewing SIP submissions, the EPA’s role is to approve state choices, 

provided that they meet the criteria of the CAA. Accordingly, this action merely approves state 

law as meeting federal requirements and does not impose additional requirements beyond those 

imposed by state law. For that reason, this action:

• is not a significant regulatory action subject to review by the Office of Management and 

Budget under Executive Orders 12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, 

January 21, 2011);

• does not impose an information collection burden under the provisions of the Paperwork 

Reduction Act (44 U.S.C. 3501 et seq.);

• is certified as not having a significant economic impact on a substantial number of small 

entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.);

• does not contain any unfunded mandate or significantly or uniquely affect small 

governments, as described in the Unfunded Mandates Reform Act of 1995 (Public Law 104-4);

• does not have Federalism implications as specified in Executive Order 13132 (64 FR 

43255, August 10, 1999);

• is not an economically significant regulatory action based on health or safety risks subject 

to Executive Order 13045 (62 FR 19885, April 23, 1997);
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• is not a significant regulatory action subject to Executive Order 13211 (66 FR 28355, 

May 22, 2001);

• is not subject to requirements of Section 12(d) of the National Technology Transfer and 

Advancement Act of 1995 (15 U.S.C. 272 note) because application of those requirements would 

be inconsistent with the Clean Air Act; and

• does not provide the EPA with the discretionary authority to address, as appropriate, 

disproportionate human health or environmental effects, using practicable and legally 

permissible methods, under Executive Order 12898 (59 FR 7629, February 16, 1994). 

In addition, the SIP is not approved to apply on any Indian reservation land or in any 

other area where the EPA or an Indian tribe has demonstrated that a tribe has jurisdiction. In 

those areas of Indian country, the rule does not have tribal implications and will not impose 

substantial direct costs on tribal governments or preempt tribal law as specified by Executive 

Order 13175 (65 FR 67249, November 9, 2000). 

The Congressional Review Act, 5 U.S.C. section 801 et seq., as added by the Small 

Business Regulatory Enforcement Fairness Act of 1996, generally provides that before a rule 

may take effect, the agency promulgating the rule must submit a rule report, which includes a 

copy of the rule, to each House of the Congress and to the Comptroller General of the United 

States. The EPA will submit a report containing this action and other required information to the 

U.S. Senate, the U.S. House of Representatives, and the Comptroller General of the United 

States prior to publication of the rule in the Federal Register. A major rule cannot take effect 
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

31

until 60 days after it is published in the Federal Register. This action is not a “major rule” as 

defined by 5 U.S.C. 804(2).

Under section 307(b)(1) of the Clean Air Act, petitions for judicial review of this action 

must be filed in the United States Court of Appeals for the appropriate circuit by [Insert date 60 

days after date of publication in the Federal Register]. Filing a petition for reconsideration by 

the Administrator of this final rule does not affect the finality of this action 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. Parties with objections to 

this direct final rule are encouraged to file a comment in response to the parallel notice of 

proposed rulemaking for this action published in the Proposed Rules section of today’s Federal 

Register, rather than file an immediate petition for judicial review of this direct final rule, so that 

the EPA can withdraw this direct final rule and address the comment in the proposed rulemaking. 

This action may not be challenged later in proceedings to enforce its requirements (see section 

307(b)(2)).
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List of Subjects in 40 CFR Part 52

Environmental protection, Air pollution control, Carbon monoxide, Incorporation by 

reference, Intergovernmental relations, Reporting and recordkeeping requirements.

August 15, 2016 /s/

________________ ______________________

Dated: Alexis Strauss,

Acting Regional Administrator,

Region IX.
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Strauss on August 15, 2016. We have taken steps to ensure the accuracy of this version, but it is 

not the official version.

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Chapter I, title 40 of the Code of Federal Regulations is amended as follows: 

PART 52 - APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS 

1. The authority citation for Part 52 continues to read as follows: 

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

Subpart DD – Nevada

2. Section 52.1470, paragraph (e) is amended by adding, under the table heading “Air Quality 

Implementation Plan for the State of Nevada” an entry “Second 10-Year Maintenance Plan for 

the Truckee Meadows 8-Hour Carbon Monoxide Attainment Area, August 28, 2014” after the 

entry “Redesignation Request and Maintenance Plan for the Truckee Meadows Carbon 

Monoxide Non-Attainment Area (September 2005), excluding appendices B, C, and D”, to read 

as follows:

§ 52.1470 Identification of plan.

* * * * *

(e) * * *

EPA-APPROVED NEVADA NONREGULATORY PROVISIONS AND QUASI-REGULATORY 

MEASURES

Name of SIP 

provision

Applicable 

geographic or

nonattainment 

area

State submittal 

date EPA approval date Explanation

Air Quality Implementation Plan for the State of Nevada1
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* * * * * * *

Second 10-Year 

Maintenance 

Plan for the 

Truckee 

Meadows 8-

Hour Carbon 

Monoxide 

Attainment 

Area, August 

28, 2014

Truckee 

Meadows, 

Washoe County

11/7/14 [INSERT Federal 

Register

CITATION] (

[INSERT DATE 

OF 

PUBLICATION])

Fulfills 

requirement for 

second ten-year 

maintenance 

plan. Includes 

motor vehicle 

emissions 

budgets for 

2015, 2020, 

2025 and 2030.

* * * * * * *

* * * * * * *

1 The organization of this table generally follows from the organization of the State of Nevada's 

original 1972 SIP, which was divided into 12 sections. Nonattainment and maintenance plans, 

among other types of plans, are listed under Section 5 (Control Strategy). Lead SIPs and Small 

Business Stationary Source Technical and Environmental Compliance Assistance SIPs are listed 

after Section 12 followed by nonregulatory or quasi-regulatory statutory provisions approved 

into the SIP. Regulatory statutory provisions are listed in 40 CFR 52.1470(c).