Approval and Promulgation of Air Quality Implementation Plans; State of Utah; Salt Lake and Davis Counties Ozone Redesignation to Attainment, Designation of Areas for Air Quality Planning Purposes, Approval of Related Elements, Approval of Partial NOINFX/INF RACT Exemption, and Approval of Weber County I/M Program

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[UT15-1-6775, UT12-2-6728, UT16-1-6776; FRL-5856-8]

Approval and Promulgation of Air Quality Implementation Plans;

State of Utah; Salt Lake and Davis Counties Ozone Redesignation to

Attainment, Designation of Areas for Air Quality Planning Purposes,

Approval of Related Elements, Approval of Partial NOX RACT

Exemption, and Approval of Weber County I/M Program

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: On May 23, 1997, EPA published a notice of proposed rulemaking

(NPR) that proposed to approve the State of Utah's request to

redesignate the Salt Lake and Davis Counties (SLDC) moderate ozone

nonattainment area to attainment. In that NPR, EPA also proposed to

approve the maintenance plan for the SLDC area, and the following

related State Implementation Plan (SIP) elements: the 1990 base year

emissions inventory, Reasonably Available Control Technology (RACT) for

Volatile Organic Compounds (VOC), Nitrogen Oxides (NOX) RACT

for Kennecott's Utah Power Plant and for the Pacificorp Gadsby Power

Plant, and the Basic Inspection and Maintenance (I/M) and Improved I/M

provisions for Salt Lake and Davis Counties. EPA also proposed to

approve a partial NOX RACT exemption request. In this final

rulemaking, EPA is approving the redesignation request, the maintenance

plan, the various related SIP elements, and the partial NOX

RACT exemption request. In the May 23, 1997, NPR, EPA also proposed to

give limited approval to the State's generic VOC RACT and generic

NOX RACT rules and to approve the I/M provisions for Weber

County. In this rulemaking, EPA is giving limited

[[Page 38214]]

approval to the VOC and NOX generic RACT rules and is

approving the I/M provisions for Weber County.

EFFECTIVE DATE: August 18, 1997.

ADDRESSES: Copies of the State's redesignation request, maintenance

plan and other documents relevant to this action are available for

public inspection between 8:00 a.m. and 4:00 p.m., Monday through

Friday at the following office: United States Environmental Protection

Agency, Region 8, Air Program, 999 18th Street, Suite 500, Denver,

Colorado 80202-2466.

Documents that are incorporated by reference are available for

public inspection at the: United States Environmental Protection

Agency, Air and Radiation Docket and Information Center, 401 M Street,

SW, Washington, D.C. 20460 as well as the above address.

FOR FURTHER INFORMATION CONTACT: Tim Russ, Air Program (8P2-A), United

States Environmental Protection Agency, Region 8, 999 18th Street,

Suite 500, Denver, Colorado 80202-2466; Telephone number: (303) 312-

6479.

SUPPLEMENTARY INFORMATION:

I. Background

On November 15, 1990, the Clean Air Act Amendments of 1990 were

enacted (Pub. L. 101-549, 104 Stat. 2399, codified at 42 U.S.C. 7401-

7671q). Under section 107(d)(1)(C) of the CAA, EPA designated the SLDC

area as nonattainment for ozone because the area had been designated as

nonattainment before November 15, 1990. The SLDC area was classified as

a moderate nonattainment area (see section 181 of the CAA for further

information regarding classifications and attainment dates for ozone

nonattainment areas).

Under the Clean Air Act (CAA), designations can be changed if

sufficient data are available to warrant such changes and if certain

other requirements are met. See CAA section 107(d)(3)(D). Section

107(d)(3)(E) of the CAA provides that the Administrator may not

promulgate a redesignation of a nonattainment area to attainment

unless:

(i) the Administrator determines that the area has attained the

national ambient air quality standard;

(ii) the Administrator has fully approved the applicable

implementation plan for the area under CAA section 110(k);

(iii) the Administrator determines that the improvement in air

quality is due to permanent and enforceable reductions in emissions

resulting from implementation of the applicable implementation plan and

applicable Federal air pollutant control regulations and other

permanent and enforceable reductions;

(iv) the Administrator has fully approved a maintenance plan for

the area as meeting the requirements of CAA section 175A; and,

(v) the State containing such area has met all requirements

applicable to the area under section 110 and part D of the CAA.

EPA has reviewed the State's redesignation request, maintenance

plan, related SIP elements, and the partial NOX RACT

exemption request. EPA has also considered all public comments

submitted in response to the NPR for this action (EPA only received one

comment letter from the Utah Mining Association which was in support of

the NPR). EPA has determined that all required SIP elements, including

the maintenance plan, have either been approved previously or will be

fully approved with this action, that the area has attained the ozone

National Ambient Air Quality Standard (NAAQS), and that the improvement

in air quality is due to permanent and enforceable reductions in

emissions resulting from the implementation of the applicable

implementation plan and applicable Federal air pollutant control

regulations and other permanent and enforceable reductions. Thus, the

five criteria in section 107(d)(3)(E) of the Clean Air Act (CAA) have

been met and approval of the redesignation request is warranted.

Detailed descriptions of how the section 107(d)(3)(E) requirements have

been met are provided in the May 23, 1997, NPR for this action (62 FR

28396) and will not be repeated here.

In addition to the SIP elements related to the redesignation

request, EPA also proposed action in the May 23, 1997, NPR on three

unrelated SIP elements. First, EPA proposed to give limited approval to

the State's generic VOC and NOX RACT rules. In the NPR, EPA

noted deficiencies in these rules that prevent full approval, and thus,

EPA is only giving limited approval to these rules for their

strengthening effect, not as meeting the CAA's requirements for VOC and

NOX RACT. Second, EPA proposed to approve I/M provisions for

Weber County and is now fully approving these I/M provisions. A

detailed description of EPA's rationale for these actions is contained

in the May 23, 1997, NPR for this action (62 FR 28396).

II. Final Action

A. In this action, EPA is approving the following:

1. The SLDC redesignation request--EPA is approving the Governor's

November 12, 1993, request to redesignate the SLDC ozone nonattainment

area to attainment.

2. The SLDC maintenance plan--EPA is approving the maintenance plan

that the Governor submitted on February 19, 1997 (``maintenance

plan''). EPA notes that a key aspect of the maintenance plan is its

implications with respect to the conformity regulations. These

regulations require a demonstration that emissions from the

transportation plan and Transportation Improvement Program are

consistent with the emissions budget in the SIP (40 CFR 93.118 and

93.119). The emissions budget is defined as the level of mobile source

emissions relied upon in the attainment or maintenance demonstration to

maintain compliance with the NAAQS in the nonattainment area. The

rule's requirements and EPA's policy on emissions budgets are found in

the Preamble to the transportation conformity rule (58 FR 62193-62196)

and in the sections of the rule referenced above.

The maintenance plan defines emissions budgets for each year

between 1994 and 2007, and for 2015 and 2020. The 1994-2007 emissions

budgets are based on the maintenance plan's emission inventory

projections, while the 2015 and 2020 budgets are based on EKMA

modeling. The maintenance plan lists budgets for Salt Lake County and

Davis County separately, and for the entire nonattainment area (both

Counties combined). The plan provides that the metropolitan planning

organization (Wasatch Front Regional Council) may demonstrate

conformity with the budgets for each County individually or for the

entire nonattainment area at its option. The plan also identifies a

safety margin (called the ``emissions credit'') for each year, which is

the difference between total emissions from all sources in the

attainment year and in each future year. The plan provides that this

safety margin may be used for conformity purposes if authorized by the

Utah Air Quality Board.

3. The 1990 SLDC ozone base year emissions inventory--EPA is

approving the 1990 SLDC ozone base year emissions inventory that the

Governor submitted on January 13, 1995, (with corrections submitted on

April 20, 1995, by Russell Roberts, Director, Utah Division of Air

Quality).

4. VOC RACT--EPA is approving the State's VOC RACT requirements as

presented in specific sections of the maintenance plan (described

below) and

[[Page 38215]]

as reflected in the following State Approval Orders (AO):

(a) Hill Air Force Base (HAFB) AO DAQE-163-96 dated February 9,

1996, HAFB AO DAQE-1134-95 dated December 7, 1995, HAFB AO DAQE-860-95

dated September 20, 1995, HAFB AO DAQE-775-95 dated August 30, 1995,

HAFB AO DAQE-403-95 dated May 8, 1995, HAFB AO DAQE-067-95 dated

January 31, 1995, HAFB AO DAQE-068-95 dated January 30, 1995, HAFB AO

DAQE-915-94 dated October 18, 1994, HAFB AO DAQE-824-94 dated September

29, 1994, HAFB AO DAQE-0752-93 dated August 27, 1993, HAFB AO DAQE-

0719-93 dated August 20, 1993, HAFB AO DAQE-0103-93 dated February 11,

1993, HAFB AO DAQE-1171-92 dated January 4, 1993, HAFB AO DAQE-416-92

dated April 28, 1992, HAFB AO DAQE-167-92 dated February 19, 1992, HAFB

AO DAQE-894-91 dated November 25, 1991, HAFB AO BAQE-039-91 dated

February 7, 1991, HAFB AO BAQE-669-88 dated December 20, 1988, HAFB AO

BAQE-525-88 dated October 13, 1988, HAFB AO BAQE-353-88 dated July 21,

1988, HAFB AO BAQE-026-88 dated January 20, 1988, HAFB AO for

Industrial Wastewater Treatment Facility dated February 20, 1986, HAFB

AO for Hydrazine Exhaust Incinerator dated February 5, 1985, HAFB AO

for Paint Booth, HVAC Modification, Standby Generators, and Fuel

Storage dated July 18, 1983, HAFB AO for Remodeling Base Exchange BX

Service Station dated July 12, 1979, HAFB AO for Construction dated

June 27, 1978, and the Olympia Sales Company AO DAQE-300-95 dated April

13, 1995.

(b) VOC RACT, as described in the maintenance plan, was addressed

for the Amoco, Chevron, Crysen, Flying J, and Phillips refineries

through the Governor's submittals of VOC RACT rules on May 4, 1990 and

July 25, 1991, as approved by EPA on June 26, 1992 (57 FR 28621).

5. NOX RACT--EPA is approving the State's NOX

RACT requirements as reflected in the following State Approval Orders

(AO):

(a) Pacificorp Gadsby Power Plant--AO: DAQE-0063-94, dated February

3, 1994.

(b) Kennecott Utah Copper Utah Power Plant--AO: DAQE-433-94, dated

May 27, 1994.

6. Basic Inspection and Maintenance (I/M) for Salt Lake and Davis

Counties--EPA is approving the Basic I/M provisions for Salt Lake and

Davis Counties that the Governor submitted on February 19, 1997.

7. Improved I/M for Salt Lake and Davis Counties--EPA is approving

the Improved I/M provisions for Salt Lake and Davis Counties that the

Governor submitted on February 19, 1997.

8. Partial NOX RACT Exemption Request--EPA is approving

the Partial NOX RACT Exemption Request for the SLDC area as

was submitted by Ursula Trueman, Director, Utah Division of Air Quality

on May 2, 1997. It is important to note that EPA is only approving an

exemption from the NOX RACT requirements for those major

stationary sources of NOX in the SLDC nonattainment area

other than the Pacificorp Gadsby Power Plant and the Kennecott Utah

Copper Utah Power Plant. EPA is not approving an exemption from the

NOX NSR requirements, NOX conformity

requirements, or the motor vehicle I/M requirements related to

NOX. Furthermore, EPA notes that NOX limits for

some or all of the major stationary sources of NOX other

than the Pacificorp Gadsby and Kennecott Utah Copper Utah Power Plants

are necessary for the SLDC nonattainment area to demonstrate

maintenance of the ozone NAAQS through 2007 (2020 for conformity

purposes).

9. Revisions to UACR R307-1-3.3.3.C, a portion of ``Control of

Installations'' and revisions to UACR R307-3.5.3.B(1), a portion of

``Emission Statement Inventory,'' both as submitted by the Governor on

February 19, 1997.

B. Unrelated to the SLDC ozone redesignation request, EPA is also

taking the following actions:

1. EPA is approving the Weber County Basic I/M provisions as

submitted by the Governor on February 19, 1997.

2. EPA is granting limited approval of revisions to UACR R307-14-1

``Requirements for Ozone Nonattainment Areas and Davis and Salt Lake

Counties'' as submitted by the Governor on February 6, 1996. UACR R307-

14-1 requires RACT for existing major sources of VOC and NOX

for which no specific emission limits or other control requirements

have been established in R307-14. This generic RACT rule strengthens

the SIP, but does not meet all the CAA requirements for RACT. Thus, EPA

is approving this rule for its strengthening effect only. For a full

discussion of the reasons EPA is unable to fully approve the revisions

to UACR R307-14-1, please refer to the May 23, 1997, NPR for this

action (62 FR 28396, 28399-28400, 28404).

Nothing in this action should be construed as permitting or

allowing or establishing a precedent for any future request for

revision to any State Implementation Plan. Each request for revision to

any State Implementation Plan shall be considered separately in light

of specific technical, economic, and environmental factors and in

relation to relevant statutory and regulatory requirements.

III. Administrative Requirements

A. Executive Order 12866

The Office of Management and Budget (OMB) has exempted this

regulatory action from E.O. 12866 review.

B. Regulatory Flexibility Act

Under the Regulatory Flexibility Act, 5 U.S.C. 600 et seq., EPA

must prepare a regulatory flexibility analysis assessing the impact of

any proposed or final rule on small entities. 5 U.S.C. 603 and 604.

Alternatively, EPA may certify that the rule will not have a

significant impact on a substantial number of small entities. Small

entities include small businesses, small not-for-profit enterprises,

and government entities with jurisdiction over populations of less than

50,000.

Redesignation of an area to attainment under sections 107(d)(3)(D)

and (E) of the CAA does not impose any new requirements on small

entities. Redesignation to attainment is an action that affects the

status of a geographical area and does not impose any regulatory

requirements on sources. Therefore, I certify that the approval of the

redesignation request will not affect a substantial number of small

entities.

SIP approvals under section 110 and subchapter I, part D of the

Clean Air Act do not create any new requirements but simply approve

requirements that the State is already imposing. Therefore, because the

Federal SIP approval does not impose any new requirements, I certify

that it does not have a significant impact on any small entities

affected. Moreover, due to the nature of the Federal-State relationship

under the CAA, preparation of a flexibility analysis would constitute

Federal inquiry into the economic reasonableness of State action. The

Clean Air Act forbids EPA to base its actions concerning SIPs on such

grounds. Union Electric Co. v. U.S. EPA, 427 U.S. 246, 255-66 (1976);

42 U.S.C. 7410(a)(2).

Approvals of NOX exemption requests under section 182(f)

of the CAA do not create any new requirements. Therefore, I certify

that approval of the State's partial NOX RACT exemption

request will not have a significant impact on any small entities

affected.

C. Unfunded Mandates

Under Section 202 of the Unfunded Mandates Reform Act of 1995

[[Page 38216]]

(``Unfunded Mandates Act''), signed into law on March 22, 1995, EPA

must prepare a budgetary impact statement to accompany any proposed or

final rule that includes a Federal mandate that may result in estimated

costs to State, local, or tribal governments in the aggregate, or to

the private sector, of $100 million or more. Under Section 205, EPA

must select the most cost-effective and least burdensome alternative

that achieves the objectives of the rule and is consistent with

statutory requirements. Section 203 requires EPA to establish a plan

for informing and advising any small governments that may be

significantly or uniquely impacted by the rule.

EPA has determined that the proposed action does not include a

Federal mandate that may result in estimated costs of $100 million or

more to either State, local, or tribal governments in the aggregate or

to the private sector. This Federal action will approve a redesignation

to attainment, pre-existing requirements under State or local law, and

an exemption from requirements otherwise imposed under the CAA; this

action will impose no new requirements. Accordingly, no additional

costs to State, local, or tribal governments, or to the private sector,

will result from this action.

D. Submission to Congress and the General Accounting Office

Under 5 U.S.C. 801(a)(1)(A) as added by the Small Business

Regulatory Enforcement Fairness Act of 1996, EPA submitted a report

containing this rule and other required information to the U.S. Senate,

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

General Accounting Office prior to the publication of the rule in

today's Federal Register. This rule is not a ``major rule'' as defined

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

E. Petitions for Judicial Review

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 September 15, 1997. 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, Carbon Monoxide,

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.

Dated: July 2, 1997.

Jack W. McGraw,

Acting Regional Administrator.

Title 40, chapter I, parts 52 and 81 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. 7401-7671q.

Subpart TT--UTAH

2. Section 52.2320 is amended by adding paragraph (c)(38) to read

as follows:

Sec. 52.2320 Identification of plan.

* * * * *

(c) * * *

(38) Revisions to the Utah State Implementation Plan, Section IX,

Control Measures for Area and Point Sources, Part D, Ozone; Section X,

Vehicle Inspection and Maintenance Program, Part A, General

Requirements and Applicability; Section X, Vehicle Inspection and

Maintenance Program, Part B, Davis County; Section X, Vehicle

Inspection and Maintenance Program, Part C, Salt Lake County; Section

X, Vehicle Inspection and Maintenance Program, Part E, Weber County;

UACR R307-1-3.3.3.C., a portion of Control of Installations; UACR R307-

1-3.5.3.B.(1), a portion of Emission Statement Inventory; all as

submitted by the Governor on February 19, 1997. EPA approved the above

provisions. In addition, EPA approved, for the limited purpose of

strengthening the SIP, revisions to UACR R307-14, Requirements for

Ozone Nonattainment Areas and Davis and Salt Lake Counties, as

submitted by the Governor on February 6, 1996.

(i) Incorporation by reference.

(A) UACR R307-2-13 adopted by the Utah Air Quality Board on January

8, 1997, effective March 4, 1997, including Section IX, Part D.2 of the

Utah State Implementation Plan (SIP) that such rule incorporates by

reference (Ozone Maintenance Provisions for Salt Lake and Davis

Counties, adopted by the Utah Air Quality Board on January 8, 1997),

and excluding any other provisions that such rule incorporates by

reference.

(B) The following State Approval Orders (AO): Pacificorp Gadsby

Power Plant AO DAQE-0063-94 dated February 3, 1994, Kennecott Utah

Copper Utah Power Plant AO DAQE-433-94 dated May 27, 1994, Hill Air

Force Base (HAFB) AO DAQE-163-96 dated February 9, 1996, HAFB AO DAQE-

1134-95 dated December 7, 1995, HAFB AO DAQE-860-95 dated September 20,

1995, HAFB AO DAQE-775-95 dated August 30, 1995, HAFB AO DAQE-403-95

dated May 8, 1995, HAFB AO DAQE-067-95 dated January 31, 1995, HAFB AO

DAQE-068-95 dated January 30, 1995, HAFB AO DAQE-915-94 dated October

18, 1994, HAFB AO DAQE-824-94 dated September 29, 1994, HAFB AO DAQE-

0752-93 dated August 27, 1993, HAFB AO DAQE-0719-93 dated August 20,

1993, HAFB AO DAQE-0103-93 dated February 11, 1993, HAFB AO DAQE-1171-

92 dated January 4, 1993, HAFB AO DAQE-416-92 dated April 28, 1992,

HAFB AO DAQE-167-92 dated February 19, 1992, HAFB AO DAQE-894-91 dated

November 25, 1991, HAFB AO BAQE-039-91 dated February 7, 1991, HAFB AO

BAQE-669-88 dated December 20, 1988, HAFB AO BAQE-525-88 dated October

13, 1988, HAFB AO BAQE-353-88 dated July 21, 1988, HAFB AO BAQE-026-88

dated January 20, 1988, HAFB AO for Industrial Wastewater Treatment

Facility dated February 20, 1986, HAFB AO for Hydrazine Exhaust

Incinerator dated February 5, 1985, HAFB AO for Paint Booth, HVAC

Modification, Standby Generators, and Fuel Storage dated July 18, 1983,

HAFB AO for Remodeling Base Exchange BX Service Station dated July 12,

1979, HAFB AO for Construction dated June 27, 1978, and the Olympia

Sales Company AO DAQE-300-95 dated April 13, 1995.

(C) UACR R307-2-18, adopted by the Utah Air Quality Board on

February 5, 1997, effective February 14, 1997. This rule incorporates

by reference Section X, Part A of the Utah State Implementation Plan,

Vehicle Inspection and Maintenance Program, General Requirements and

Applicability.

(D) UACR R307-2-31, adopted by the Utah Air Quality Board on

February 5, 1997, effective February 14, 1997. This rule incorporates

by reference Section X, Part B of the Utah State Implementation Plan,

Vehicle Inspection and Maintenance Program, Davis County.

[[Page 38217]]

(E) UACR R307-2-32, adopted by the Utah Air Quality Board on

February 5, 1997, effective February 14, 1997. This rule incorporates

by reference Section X, Part C of the Utah State Implementation Plan,

Vehicle Inspection and Maintenance Program, Salt Lake County.

(F) UACR R307-2-34, adopted by the Utah Air Quality Board on

February 5, 1997, effective February 14, 1997. This rule incorporates

by reference Section X, Part E of the Utah State Implementation Plan,

Vehicle Inspection and Maintenance Program, Weber County.

(G) UACR R307-1-3.3.3.C., a portion of Control of Installations, as

adopted by the Utah Air Quality Board on January 8, 1997, effective

January 15, 1997.

(H) UACR R307-1-3.5.3.B.(1), a portion of Emission Statement

Inventory regulation, as adopted by the Utah Air Quality Board on

January 8, 1997, effective January 15, 1997.

(I) UACR R307-14-1, Requirements for Ozone Nonattainment Areas and

Davis and Salt Lake Counties, adopted by the Utah Air Quality Board on

August 9, 1995, effective on August 15, 1995.

3. New Sec. 52.2350 is added to read as follows:

Sec. 52.2350 Emission inventories.

The Governor of the State of Utah submitted the 1990 base year

emission inventory of ozone precursors, which are volatile organic

compounds, nitrogen oxides, and carbon monoxide, for the Salt Lake and

Davis Counties ozone nonattainment area on January 13, 1995, as a

revision to the State Implementation Plan (SIP). This inventory

addresses emissions from point, area, non-road, on-road mobile, and

biogenic sources. This Governor's submittal was followed by the

submittal of corrections to the inventory, on April 20, 1995, from

Russell Roberts, Director, Division of Air Quality, Utah Department of

Environmental Quality. The ozone maintenance plan for Salt Lake and

Davis Counties that the Governor submitted on February 19, 1997,

incorporates by reference the corrected 1990 base year ozone emission

inventory as background material. The 1990 ozone base year emission

inventory requirement of section 182(a)(1) of the Clean Air Act, as

amended in 1990, has been satisfied for the Salt Lake and Davis

Counties area.

4. New Sec. 52.2351 is added to read as follows:

Sec. 52.2351 Area-wide nitrogen oxides (NOX) exemption.

On May 2, 1997, Ursula Trueman, Director, Division of Air Quality,

Utah Department of Environmental Quality, submitted, on behalf of the

State of Utah and pursuant to section 182(f)(2)(A) of the Clean Air Act

as amended in 1990, a section 182(f)(2) NOX Reasonably

Available Control Technology (RACT) exemption request for major

stationary sources of NOX in the Salt Lake and Davis

Counties ozone nonattainment area other than the Pacificorp Gadsby and

Kennecott Utah Copper Utah Power Plants. The exemption request was

based on ambient air quality monitoring data which demonstrated that

the ozone National Ambient Air Quality Standard (NAAQS) had been

attained in the Salt Lake and Davis Counties ozone nonattainment area

for the years 1990 through 1996. EPA approved this NOX RACT

exemption request on July 2, 1997.

PART 81--[AMENDED]

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

Authority: 42 U.S.C. 7401-7671q.

2. In Sec. 81.345, the table entitled ``Utah-Ozone'' is amended by

revising the entry for ``Salt Lake City Area'' to read as follows:

Sec. 81.345 Utah.

* * * * *

Utah-Ozone

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

Designation Classification

Designated area ---------------------------------------------------------------------------

Date \1\ Type Date \1\ Type

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

Salt Lake City Area:

Davis County.................... August 18, 1997........ Attainment.............

Salt Lake County................ August 18, 1997........ Attainment.............

* * * * * * *

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

\1\ This date is November 15, 1990, unless otherwise noted.

* * * * *

[FR Doc. 97-18715 Filed 7-16-97; 8:45 am]

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