Approval and Promulgation of Implementation Plans, Finding of Attainment, and Designation of Areas for Air Quality Planning Purposes; 1-Hour Ozone Standard, East Kern County, CA

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Direct final rule.

SUMMARY:

EPA is finding that East Kern County, California, has attained the 1-hour ozone National Ambient Air Quality Standard (NAAQS). EPA is approving the East Kern County 1-hour ozone maintenance plan and motor vehicle emissions budgets as revisions to the East Kern County portion of the California State Implementation Plan (SIP). Finally, EPA is redesignating the East Kern County area to attainment for the 1-hour ozone NAAQS.

DATES:

This direct final rule is effective June 21, 2004, without further notice, unless we receive adverse comments by May 24, 2004. If EPA receives adverse comments, we will publish a timely withdrawal of the direct final rule in the Federal Register and inform the public that the rule will not take effect.

ADDRESSES:

Please address your comments to: Dave Jesson, EPA Region IX, 75 Hawthorne Street, San Francisco, CA 94105-3901 or submit comments at http://www.regulations.gov.

You can inspect copies of the docket for this action at EPA's Region IX office during normal business hours. You can also inspect copies of the submitted SIP revision at the following locations:

California Air Resources Board, 1001 I Street, Sacramento, CA 95814

Kern County Air Pollution Control District, 2700 M Street, Suite 302, Bakersfield, CA 93301-2370

FOR FURTHER INFORMATION CONTACT:

Dave Jesson, EPA Region IX, (415) 972-3957, or Jesson.David@epa.gov.

SUPPLEMENTARY INFORMATION:

Throughout this document, “we,” “us,” and “our” refer to EPA.

Table of Contents

I. Background

A. East Kern Designation, Classification, SIP, and Attainment Status

B. Clean Air Act Provisions for Maintenance Plans

C. Clean Air Act Provisions for Redesignation

II. EPA Review of the East Kern County Maintenance Plan and Redesignation Request and EPA Finding of Attainment

A. Maintenance Plan

1. Emissions Inventory

2. Maintenance Demonstration

3. Continued Ambient Monitoring

4. Verification of Continued Attainment

5. Contingency Provisions

6. Motor Vehicle Emissions Budgets

B. Redesignation Provisions

1. Finding of Attainment of the 1-Hour Ozone NAAQS

2. Fully Approved Implementation Plan under CAA Section 110(k)

3. Improvement in Air Quality Due to Permanent and Enforceable Measures

4. Fully Approved Maintenance Plan

5. CAA Section 110 and Part D Provisions Satisfied

III. Public Comment and EPA Action

IV. Statutory and Executive Order Reviews

I. Background

A. East Kern County Designation, Classification, SIP, and Attainment Status

When the Clean Air Act (CAA) was amended in 1990, each area of the country that was designated nonattainment for the 1-hour ozone NAAQS was classified by operation of law as marginal, moderate, serious, severe, or extreme depending on the severity of the area's air quality problem. The East Kern County nonattainment area (“East Kern”) was designated under CAA section 107 as part of the San Joaquin Valley nonattainment area, and was classified under CAA section 181 as serious for the 1-hour ozone NAAQS. See 40 CFR 81.305 and 56 FR 56694 (November 6, 1991), designating the entire Kern County as part of the “San Joaquin Valley Area” for ozone.

The Kern County Air Pollution Control District (KCAPCD) adopted a serious area plan, intended to demonstrate rate-of-progress (ROP) and attainment by the applicable deadline of November 15, 1999. The California Air Resources Board (CARB) timely submitted the plan in 1994, along with the plan adopted by the San Joaquin Valley Unified Air Pollution Control District for the remainder of the San Joaquin Valley nonattainment area. We approved the ROP and attainment plans for the San Joaquin Valley, including the portion of the SIP applicable to Kern County, on January 8, 1997 (62 FR 1150).

On November 8, 2001 (66 FR 56476), we took these actions: (1) We determined that the San Joaquin Valley had not attained the 1-hour ozone standard by the 1999 deadline, reclassified the area to severe, and set a deadline for submittal of a SIP addressing the severe area requirements for the area; and (2) we separated the eastern portion of Kern County from the San Joaquin Valley area and extended the attainment deadline for this new serious area from 1999 to 2001, pursuant to CAA section 181(a)(5). In our rulemaking, we noted that, “if East Kern County does not record a violation in 2001, the area will be eligible for redesignation to attainment for the 1-hour ozone NAAQS, following submittal by the State and approval by EPA of a redesignation request and maintenance plan addressing the provisions of CAA section 175A.” 66 FR 56481.

East Kern attained the 1-hour ozone NAAQS in 2001 and continued to record levels below the NAAQS during 2002 and 2003. Attainment is achieved when the average number of expected exceedance days per year is 1.0 or less for each monitor during a 3-year period. See discussion in Section II.B.1., below.

On May 1, 2003, KCAPCD adopted the Ozone Attainment Demonstration, Maintenance Plan and Redesignation Request (“maintenance plan”) to address the CAA section 175A provisions relating to 1-hour ozone maintenance plans. On December 9, 2003, CARB adopted and submitted specified elements of the maintenance plan, and requested that we approve these elements and redesignate the area to attainment for the 1-hour ozone NAAQS. CARB specifically requested that we approve the following elements of the plan:

(a) Appendix A containing ambient air quality data;

(b) Appendix B containing emissions inventory data for the 1999 attainment year and future years demonstrating that East Kern County's future ozone precursor inventory will not exceed the 1999 attainment year inventory;

(c) Chapter 6 containing contingency measures; and

(d) Table 5-2 containing motor vehicle emissions budgets.

B. Clean Air Act Provisions for Maintenance Plans

CAA section 175A sets forth the elements of a maintenance plan for areas seeking redesignation from nonattainment to attainment. The maintenance plan must provide for continued maintenance of the applicable NAAQS for at least 10 years after the area is redesignated to attainment (CAA section 175A(a)). To address the possibility of future NAAQS violations, the maintenance plan must contain contingency provisions that are adequate to assure prompt correction of a violation, and must include a requirement that the State will implement all measures with respect to the control of the air pollutant concerned which were contained in the State implementation plan for the area before redesignation of the area as an attainment area (CAA section 175A(d)).

We have issued maintenance plan and redesignation guidance, primarily in the “General Preamble for the Implementation of Title I of the Clean Air Act Amendments of 1990” (“General Preamble,” 57 FR 13498, April 16, 1992); a September 4, 1992 memo from John Calcagni titled “Procedures for Processing Requests to Redesignate Areas to Attainment” (“Calcagni memo” available at: http://www.epa.gov/ttn/naaqs/ozone/ozonetech/940904.pdf ); a September 17, 1993 memo from Michael H. Shapiro titled “State Implementation Plan (SIP) Requirements for Areas Submitting Requests for Redesignation to Attainment of the Ozone and Carbon Monoxide (CO) National Ambient Air Quality Standards (NAAQS) on or after November 15, 1992''; and a November 30, 1993 memo from D. Kent Berry titled “Use of Actual Emissions in the Maintenance Demonstrations for Ozone and Carbon Monoxide (CO) Nonattainment Areas.”

The Calcagni memo provides that an ozone maintenance plan should address five elements: an attainment year emissions inventory (i.e., an inventory reflecting actual emissions when the area recorded attainment, and thus a level of emissions sufficient to attain the 1-hour ozone NAAQS), a maintenance demonstration, provisions for continued operation of an appropriate air quality monitoring network, verification of continued maintenance, and contingency measures.

C. Clean Air Act Provisions for Redesignation

CAA section 107(d)(3)(E) allows for redesignation providing that: (1) We determine, at the time of redesignation, that the area has attained the NAAQS; (2) we have fully approved the applicable implementation plan for the area under section 110(k); (3) we determine that the improvement in air quality is due to permanent and enforceable reductions in emissions resulting from implementation of the SIP, applicable Federal regulations, and other permanent and enforceable reductions; (4) we fully approve a maintenance plan for the area as meeting the requirements of section 175A; and, (5) the State containing such area has met all nonattainment area requirements applicable to the area under section 110 and part D. We have provided guidance on redesignation in the General Preamble and in the guidance memos cited above.

II. EPA Review of the East Kern County Maintenance Plan and Redesignation Request and EPA Finding of Attainment

A. Maintenance Plan

As discussed above in Section I.A., CARB submitted the maintenance plan on December 9, 2003. The plan consists of a single volume, including appendices on air quality data and projected emissions.

1. Emissions Inventory

The maintenance plan includes emissions inventories for Volatile Organic Compounds (VOC) and Nitrogen Oxides (NO_X) for 1990, 1999, 2001, 2005, 2010, 2015, and 2020. Emissions forecasts for future years take into account projected growth and changes in control factors, using established State methodologies. The emissions inventories were updated in March 2003, and are presented as emissions in tons per summer day using the State's most recent data for stationary, area, and mobile categories.

The inventories use current and accurate methodologies, emissions factors, and survey information. The onroad emissions inventories employ the new CARB motor vehicle emissions factor model, EMFAC2002, and the latest planning activity levels. On April 1, 2003 (68 FR 15720-15723), we published a Federal Register notice stating our conclusion that the EMFAC2002 emission factor model is acceptable for use in SIP development and transportation conformity. Because the inventories are current, accurate, and complete, we are approving them under CAA section 172(c)(3) and 175A.

2. Maintenance Demonstration

Original maintenance plans must show how the NAAQS will be maintained for the next 10 years following redesignation to attainment. This is generally performed by assuming that the emissions levels at the time attainment is achieved constitute a limit on the emissions that can be accommodated without violating the NAAQS. In the case of this plan, projected VOC and NO_X emissions through 2015 show continued attainment, since emissions levels of both of the ozone precursors are below 2001 levels. Table 1 below shows baseline and projected summer day emissions levels.

Maintenance is demonstrated since total emissions of the two ozone precursors decline from the attainment year inventories. Increasingly stringent California and Federal motor vehicle emissions standards and fleet turnover account for the bulk of the inventory reductions, and the remaining emissions reductions come from fully adopted, permanent, and enforceable State, local, and Federal regulations.

We are approving the maintenance demonstration under CAA section 175A(a), since the plan shows that emissions will remain below attainment levels due to the projected impact of fully adopted, permanent, and enforceable regulations.

3. Continued Ambient Monitoring

The maintenance plan needs to contain provisions for continued operation of an air quality monitoring network that meets the provisions of 40 CFR part 58 and will verify continued attainment. CARB's Executive Order G-03-057 includes a commitment that the State will “work with the Kern County Air Pollution Control District to ensure continued ozone air quality monitoring in the East Kern County nonattainment area, in accordance with 40 CFR Part 58, for at least ten years following redesignation of the area to attainment, in order to verify the attainment status of the area” (page 5 of the Executive Order). This CARB commitment meets the continued monitoring provision, and we are approving it under CAA section 175A.

4. Verification of Continued Attainment

The maintenance plan needs to show how the responsible agencies will track progress, and the plan should specifically provide for periodic inventory updates. The KCAPCD will meet this obligation through triennial updates to the area's attainment plan for the more protective State 1-hour ozone standard, which are mandated by the California Clean Air Act. These updates include assessments of the effectiveness of the control strategy, corrections for deficiencies in meeting progress requirements under State law, new emissions inventory data and projections, and summaries of monitored air quality data. The triennial updates will meet our provisions for verification of continued attainment. We are approving this provision under CAA section 175A.

5. Contingency Provisions

CAA section 175A(d) provides that maintenance plans include contingency provisions “necessary to assure that the State will promptly correct any violation of the standard.* * * Such provisions shall include a requirement that the State will implement all measures with respect to the control of the air pollutant concerned which were contained in the State implementation plan for the area before redesignation of the area as an attainment area.”

Table 6-1 of the maintenance plan lists KCAPCD contingency measures. These measures are listed below in Table 2, “Contingency Measures.”

The CAA section 175A(d) and EPA's guidance on contingency provisions in maintenance plans do not require that the measures be fully adopted. The measures with rule numbers in Table 2 have been fully adopted, are now being fully implemented, and will continue to deliver excess reductions beyond those required to bring the area into attainment. These rules are not in fact contingent, but rather achieve emissions reductions beyond those needed for continued maintenance and will be retained as part of the SIP. The measures indicated as “new” have not yet been adopted, but would be adopted and implemented as needed to ensure that any violation of the NAAQS that occurs after redesignation to attainment will be corrected promptly. We are approving the measures as meeting the requirements of CAA section 175A(d).

6. Motor Vehicle Emissions Budgets

Maintenance plan submittals must specify the maximum emissions of transportation-related precursors of ozone allowed in the last year of the maintenance period. The submittals must also demonstrate that these emissions levels, when considered with emissions from all other sources, are consistent with maintenance of the NAAQS. In order for us to find these emissions levels or “budgets” adequate and approvable, the submittal must meet the conformity adequacy provisions of 40 CFR 93.118(e)(4) and (5), and be approvable under all pertinent SIP requirements.

The budgets defined by this and other plans when they are approved into the SIP or, in some cases, when the budgets are found to be adequate, are then used to determine the conformity of transportation plans, programs, and projects to the SIP, as described by CAA section 176(c)(3)(A). For more detail on this part of the conformity requirements, see 40 CFR 93.118. For transportation conformity purposes, the cap on emissions of transportation-related ozone precursors is known as the motor vehicle emissions budget. The budget must reflect all of the motor vehicle control measures contained in the maintenance demonstration (40 CFR 93.118(e)(4)(v)).

The motor vehicle emissions budgets are presented in Table 3 below, entitled “East Kern County Maintenance Plan Motor Vehicle Emissions Budgets,” which is taken from Table 5-2.

The maintenance plan notes that “the budgets were slightly adjusted by adding one tenth of a ton to account for potential emission increases associated with recent state legislation affecting smog check requirements. Because these emissions budgets are expressed in tenths of a ton per day, onroad motor vehicle emissions estimates should be rounded up to the next tenth of a ton” in future conformity determinations. (Page 5-5 of the maintenance plan.)

Under our policy for reviewing the adequacy of motor vehicle emissions budget submissions, these budgets were posted on our transportation conformity Web site ( http://www.epa.gov/oms/traq ) for public comment. The public comment period on budget adequacy closed on January 16, 2004. We received no comments on the adequacy of the budgets.

As discussed above, the motor vehicle emissions portion of these budgets (i.e., the evaporative and tailpipe emissions) was developed using EMFAC2002 and updated county-specific vehicle data, including the latest East Kern County planning assumptions on vehicle fleet and age distribution and activity levels. In this action, we are approving the motor vehicle emission budgets under CAA section 176(c)(2) because the budgets are consistent with the criteria of 40 CFR 93.118(e)(4) and (5), including consistency with the motor vehicle emissions inventory used in the maintenance demonstration.

B. Redesignation Provisions

1. Finding of Attainment of the 1-Hour Ozone NAAQS

The 1-hour ozone NAAQS is 0.12 ppm, not to be exceeded on average more than 1 day per year over any 3-year period at any monitor within the area. 40 CFR 50.9 and appendix H. Therefore, demonstrating that an area has attained the 1-hour standard requires calculating the average number of days over the standard per year at each monitor during the preceding 3-year period.

For this proposal, we include Table 4 below, entitled “East Kern County 1-Hour Ozone Maximum Concentrations and Exceedance Days,” showing attainment based on both the design value and the average number of exceedance days per year for the period 1999 through 2003. The design value is an ambient ozone concentration that indicates the severity of the ozone problem in an area and is used to determine the level of emission reductions needed to attain the standard, that is, it is the ozone level around which a State designs its control strategy for attaining the ozone standard. A monitor's design value is the fourth highest ambient concentration recorded at that monitor over the previous 3 years. An area's design value is the highest of the design values from the area's monitors. Attainment is determined using all available, quality-assured air quality data for the 3-year period up to and including the attainment date. Consequently, we used all of the quality-assured data available to determine whether the East Kern County area attained the 1-hour ozone standard. From the available air quality data, we have calculated the average number of days over the standard and the design value for each ozone monitor in the nonattainment area. It should be noted that not all data for the 4th quarter of 2003 have yet been quality assured and entered into EPA's Aerometric Information Retrieval System-Air Quality Subsystem (AIRS-AQS) database.

Under CAA section 181(b)(2)(A), we must determine whether an ozone nonattainment area has attained the standard by the applicable attainment deadline. As discussed above in Section I.A., East Kern did not attain by the serious area deadline of 1999, but the area was granted two one-year attainment date extensions pursuant to CAA section 181(a)(5), thus moving the attainment deadline to 2001. 77 FR 56476 (November 8, 2001). From Table 4, it is apparent that no monitor in East Kern recorded more than 3 exceedances of the standard for the period 1999-2001. The highest design value at any monitor, and thus the design value for East Kern, for 1999-2001 is 0.116 ppm based on the highest 4th maximum concentration recorded in 2001 at the Mojave site. We are therefore finding under CAA section 181(b)(2)(A) that East Kern attained the 1-hour ozone standard by the applicable deadline of 2001.

Table 4 also shows that the highest design value at any monitor for the 3-year periods 2000-2002 and 2001-2003. As for the period 1999-2001, the design value for East Kern for both 2000-2002 and 2001-2003, is 0.116 ppm, based on the 4th maximum concentration recorded in 2001 at the Mojave site. During these 3-year periods, no monitor recorded more than 3 exceedances. Table 4 shows that the area has continued to maintain the standard through the most recent three-year period of 2001-2003, and East Kern has thus met this prerequisite to redesignation.

2. Fully Approved Implementation Plan under CAA Section 110(k)

Following adoption of the CAA of 1970, California has adopted and submitted and we have fully approved at various times provisions addressing the various SIP elements applicable in East Kern County. As previously mentioned, we fully approved the 1-hour ozone ROP and attainment plan applicable to Kern County on January 8, 1997 (62 FR 1150).

3. Improvement in Air Quality Due to Permanent and Enforceable Measures

Chapter 5 of the maintenance plan provides information on activity levels in the area, noting that there is a lack of significant historical change since 1990 and a lack of change in the future. The economy is heavily dependent upon the Naval Air Weapons Station and Edwards Air Force Base, along with related private industry aerospace activities. Mining is the other economic base. Gold and silver mining has diminished since 1992, while borax mining has remained constant. Growth is not projected in the industry as a whole. Just as attainment cannot be ascribed to unusually reduced activity levels, so it cannot be attributed to favorable meteorology. For example, immediately adjacent nonattainment areas experienced unfavorable meteorology in 2003 and dramatic increases in ozone concentrations, but the design value in East Kern County remained well below the 1-hour ozone NAAQS during the past year. Finally, the projected emissions inventory, which shows a decline in total VOC and NO_X emissions (see Table 1, above), takes credit only for reductions that are permanent and enforceable. We therefore conclude that attainment was not the result of unusual activity or meteorology, but rather the permanent and enforceable emissions control measures that continue in force at the State, local, and federal level. Examples of these measures are presented in Table 3-1 of the maintenance plan.

4. Fully Approved Maintenance Plan

In Section II.A., above, we are proposing to approve the maintenance plan as meeting the CAA section 175A provisions.

5. CAA Section 110 and Part D Provisions Satisfied

We approved the East Kern ozone attainment SIP on January 8, 1997 (62 FR 1150) with respect to CAA section 110 and Part D provisions applicable to a serious ozone nonattainment area. As noted above, we have approved other CAA section 110 SIP provisions applicable to East Kern County at various times in the past.

We have not approved the KCAPCD new source review (NSR) rule as meeting the part D requirements contained in CAA section 172(c)(5). However, consistent with EPA guidance, we are not requiring as a prerequisite to redesignation to attainment EPA's full approval of a part D NSR program. Under this guidance, nonattainment areas may be redesignated to attainment notwithstanding the lack of a fully-approved part D NSR program, so long as the program is not relied upon for maintenance. The East Kern maintenance plan does not rely on the NSR program and, therefore, the area will not need a part D NSR program to maintain the 1-hour ozone NAAQS.

III. Public Comment and EPA Action

Under CAA section 181(b)(2)(A), we are finding that the East Kern area attained the 1-hour ozone NAAQS by the applicable attainment deadline of 2001. We are approving the East Kern County Maintenance Plan under CAA sections 175A and 110(k)(3). We are approving the 2001, 2005, and 2015 VOC and NO_X motor vehicle emissions budgets in Table 5-2 of the maintenance plan under CAA sections 176(c)(2) as adequate for attainment and maintenance of the 1-hour ozone NAAQS and for transportation conformity purposes. Finally, we are redesignating East Kern County area to attainment for the 1-hour ozone standard under CAA section 107(d)(3)(E).

We do not think anyone will object to this approval and redesignation, so we are finalizing them without proposing it in advance. However, in the Proposed Rules section of this Federal Register, we are simultaneously proposing approval of the same submitted maintenance plan and request for redesignation to attainment. If we receive adverse comments by May 24, 2004, 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 June 21, 2004. This will incorporate the maintenance plan into the federally enforceable SIP and redesignate the area to attainment of the 1-hour ozone NAAQS.

IV. Statutory and Executive Order Reviews

Under Executive Order 12866 (58 FR 51735, October 4, 1993), this action is not a “significant regulatory action” and therefore is not subject to review by the Office of Management and Budget. For this reason, this action is also not subject to Executive Order 13211, “Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use” (66 FR 28355, May 22, 2001). This action merely approves state law as meeting Federal requirements and imposes no additional requirements beyond those imposed by state law. Accordingly, the Administrator certifies that this rule will not have a significant economic impact on a substantial number of small entities under the Regulatory Flexibility Act (5 U.S.C. 601 et seq.). Because this rule approves pre-existing requirements under state law and does not impose any additional enforceable duty beyond that required by state law, it does not contain any unfunded mandate or significantly or uniquely affect small governments, as described in the Unfunded Mandates Reform Act of 1995 (Pub. L. 104-4).

This rule also does not have tribal implications because it will not have a substantial direct effect on one or more Indian tribes, on the relationship between the Federal Government and Indian tribes, or on the distribution of power and responsibilities between the Federal Government and Indian tribes, as specified by Executive Order 13175 (65 FR 67249, November 9, 2000). This action also does not have Federalism implications because it does not have substantial direct effects on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government, as specified in Executive Order 13132 (64 FR 43255, August 10, 1999). This action merely approves a state rule implementing a Federal standard, and does not alter the relationship or the distribution of power and responsibilities established in the Clean Air Act. This rule also is not subject to Executive Order 13045 “Protection of Children from Environmental Health Risks and Safety Risks” (62 FR 19885, April 23, 1997), because it is not economically significant.

In reviewing SIP submissions, EPA's role is to approve state choices, provided that they meet the criteria of the Clean Air Act. In this context, in the absence of a prior existing requirement for the State to use voluntary consensus standards (VCS), EPA has no authority to disapprove a SIP submission for failure to use VCS. It would thus be inconsistent with applicable law for EPA, when it reviews a SIP submission, to use VCS in place of a SIP submission that otherwise satisfies the provisions of the Clean Air Act. Thus, the requirements of section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) do not apply. This rule does not impose an information collection burden under the provisions of the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.).

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. EPA will submit a report containing this rule and other required information to the U.S. Senate, the U.S. House of Representatives, and the Comptroller General of the United States prior to publication of the rule in the Federal Register. A major rule cannot take effect 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. section 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 June 21, 2004. Filing a petition for reconsideration by the Administrator of this final rule does not affect the finality of this rule for the purposes of judicial review nor does it extend the time within which a petition for judicial review may be filed, and shall not postpone the effectiveness of such rule or action. This action may not be challenged later in proceedings to enforce its requirements. (See section 307(b)(2).)

List of Subjects

40 CFR Part 52

• Environmental protection
• Air pollution control
• Hydrocarbons
• Incorporation by reference
• Intergovernmental relations
• Nitrogen dioxide
• Ozone
• Reporting and recordkeeping requirements
• Volatile organic compounds

40 CFR Part 81

• Environmental protection
• Air pollution control
• National parks
• Wilderness areas

Parts 52 and 81, chapter I, title 40 of the Code of Federal Regulations are amended as follows:

PART 52—[AMENDED]

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

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

Subpart F—California

2. Section 52.220 is amended by adding paragraph(c)(322)to read as follows:

PART 81—[AMENDED]

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

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

2. In § 81.305, the California Ozone (1-Hour Standard) table is amended by revising the entry for the East Kern County area to read as follows: