Approval and Promulgation of State Implementation Plans and Designation of Areas for Air Quality Planning Purposes: State of Oregon

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[OR 56-7271; FRL-5884-4]

Approval and Promulgation of State Implementation Plans and

Designation of Areas for Air Quality Planning Purposes: State of Oregon

AGENCY: Environmental Protection Agency.

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is redesignating the

Portland, Oregon nonattainment area to attainment for the carbon

monoxide (CO) national ambient air quality standard (NAAQS) and

approving a maintenance plan that will insure that the area remains in

attainment. Under the Clean Air Act (CAA) as amended in 1990,

designations can be revised if sufficient data is available to warrant

such revisions. In this action, EPA is approving the Oregon Department

of Environmental Quality's (DEQ's) request because it meets the

redesignation requirements set forth in the CAA. As part of this

action, EPA is approving two related State Implementation Plan (SIP)

revisions: the 1990 base year emissions inventory, as meeting the

requirements of section 187(a)(1) of the CAA; and the 1991 attainment

year emissions inventory, as meeting the periodic inventory

requirements of section 187(a)(5) of the CAA.

DATES: This rule is effective as of October 2, 1997.

ADDRESSES: Copies of Oregon's redesignation request and other

information supporting this action are available for inspection during

normal business hours at the following locations: EPA, Office of Air

Quality (OAQ-107), 1200 Sixth Avenue, Seattle, Washington 98101; and

the Oregon Department of Environmental Quality, 811 SW 6th Avenue,

Portland, Oregon 97204-1390, telephone (503) 229-5696.

Documents which are incorporated by reference are available for

public inspection at the Air and Radiation Docket and Information

Center, EPA, 401 M Street, SW, Washington, D.C. 20460, as well as the

above addresses.

FOR FURTHER INFORMATION CONTACT: William M. Hedgebeth, Office of Air

Quality (OAQ-107), EPA, Seattle, Washington, (206) 553-7369.

SUPPLEMENTARY INFORMATION:

I. Background

On March 15, 1991, the Governor of Oregon recommended that the

Portland portion of the Portland-Vancouver Air Quality Maintenance Area

be designated as nonattainment for CO as required by section

107(d)(1)(A) of the 1990 Clean Air Act Amendments (CAAA) (Pub. L. 101-

549, 104 Stat. 2399, codified at 42 U.S.C. 7401-7671(q)). The area was

designated nonattainment and classified as ``moderate'' with a design

value less than or equal to 12.7 parts per million (ppm) under the

provisions outlined in sections 186 and 187 of the CAA. (See 56 FR

56694, November 6, 1991, codified at 40 C.F.R. Sec. 81.338). On

September 29, 1995, EPA approved the separation of the Portland-

Vancouver CO nonattainment area into two distinct nonattainment areas,

effective November 28, 1995. Because the Portland area had a design

value of 9.8 ppm (based on 1988-1989 data), the area was considered

moderate. The CAA established an attainment date of December 31, 1995,

for all moderate CO areas. The Portland area has ambient monitoring

data showing attainment of the CO National Ambient Air Quality Standard

(NAAQS) since 1989. On August 30, 1996, Oregon submitted a CO

redesignation request and a CO Maintenance Plan for the Portland area.

Oregon submitted evidence that public hearings were held on May 22,

1996, in Portland, Oregon, and on May 23, 1996, in Tigard, Oregon.

Oregon provided monitoring, modeling, and emissions data to support

its redesignation request. The 1991 CO attainment emissions inventory

totals in tons per day are: Point Sources: 57.97; Area Sources: 205.50;

On-road Mobile Sources: 906.11; and Non-road Mobile Sources: 67.55;

Total Sources: 1237.13 tons per day. The emission budget established

through the year 2007 is as follows:

Portland CO Transportation Emission Budgets

[Thousand pounds per winter day]

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Year.............................. 1991 1995 1997 2001 2003 2007

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CO NONATTAINMENT AREA = METRO BOUNDARY

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Budget............................ 1812 1217 1076 875 825 775

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CCTMP Sub-Area

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Budget............................ 191 123 107 84 78 70

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82nd Avenue Corridor Sub-Area

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Budget............................ 12 7 6 5 4 4

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Oregon relied, in part, on the existence of an approved Inspection

and Maintenance (I/M) program to attain the CO NAAQS, and has

implemented an enhanced I/M program which will help maintain the NAAQS

during the ten-year maintenance period. Oregon also relied on an

oxygenated fuel program to ensure attainment of the NAAQS, although it

is important to note that the CO NAAQS was attained in Portland prior

to the implementation of the oxygenated fuel program in 1992. The

oxygenated fuel program remains part of the maintenance plan during the

first ten-year maintenance period.

A number of other measures have been implemented that have also

helped improve air quality in the Portland CO nonattainment area. The

primary permanent federal measure which has contributed to this

improvement for CO has been the Federal Motor Vehicle Control Program

which has established emission standards for new motor vehicles.

Additional measures implemented by Oregon, Metro, and the City of

Portland which have contributed to the improvement in CO are: major New

Source Review Program (lowest achievable emission rate and offsets);

improved public transit; carpool matching program and carpool parking

program in downtown Portland; traffic flow improvements (ramp metering,

computerized signalization, on-street

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parking limits); City of Portland bicycle parking program; Downtown

Portland Air Quality Plan (1980 Updated Downtown Parking and

Circulation Policy); and the Downtown Portland Parking Offset Program.

It should also be noted that improvements in the air quality in the

Portland metropolitan area were also acknowleged by EPA when it

redesignated the Portland-Vancouver ozone nonattainment area to

attainment on May 19, 1997 (See 62 FR 27204).

The Portland area initially attained the NAAQS for CO in 1990 with

monitored attainment continuing throughout the 1994-1995 CO season.

This was accomplished in spite of rapid population growth in the

Portland area since 1991. In addition, Oregon evaluated Portland area

meteorological patterns over the 1985-1994 period and concluded that

the recent compliance with the CO standards was not attributable to

favorable meteorology.

II. Response To Comments

No comments were received on the June 9, 1997, Notice of Proposed

Rulemaking in this matter.

III. Final Action

EPA is approving the Portland CO Maintenance Plan and Oregon's

request to redesignate the Portland area to attainment of the CO

standard because Oregon's submittal meets the requirements of section

107(d)(3)(E) of the CAA. This approval revises the SIP for the Portland

area and assures that the CO standard will be maintained through the

year 2007. Because EPA is approving the Maintenance Plan and because

the area meets CAA requirements for redesignation to attainment, the

Portland area will be designated as attaining the CO NAAQS. EPA is also

approving Oregon's 1990 base year emissions inventory as meeting the

requirements of section 187(a)(1) of the CAA and is approving Oregon's

1991 attainment year emissions inventory as meeting the periodic

inventory requirements of section 187(a)(5) of the CAA.

Nothing in this action should be construed as permitting or

allowing or establishing a precedent for any future request for

revision to any SIP. Each request for revision to the SIP shall be

considered separately in light of specific technical, economic, and

environmental factors, and in relation to relevant statutory and

regulatory requirements.

IV. 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.

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, the Regional

Administrator certifies 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).

Redesignation of an area to attainment under section 107(d)(3)(E)

of the CAA does not impose any new requirements on small entities.

Redesignation is an action that affects the status of a geographical

area and does not impose any regulatory requirements on sources. The

Regional Administrator certifies that the approval of the redesignation

request will not affect a substantial number of small entities.

C. Unfunded Mandates

Under Section 202 of the Unfunded Mandates Reform Act of 1995

(``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 approval action promulgated 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 approves pre-

existing requirements under State or local law, and imposes no new

requirements. Accordingly, no additional costs to State, local, or

tribal governments, or to the private sector, 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 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 CAA, petitions for judicial review

of this action must be filed in the United States Court of Appeals for

the appropriate circuit by November 3, 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,

Incorporation by reference, Intergovernmental relations.

40 CFR Part 81

Environmental protection, Air pollution control.

Note: Incorporation by reference of the Implementation Plan for

the State of Oregon was approved by the Director of the Office of

Federal Register on July 1, 1982.

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Dated: August 11, 1997.

Chuck Findley,

Acting Regional Administrator.

PART 52--[AMENDED]

Part 52, chapter I, title 40 of the Code of Federal Regulations is

amended as follows:

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

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

Subpart MM--Oregon

2. Section 52.1970 is amended by adding paragraph (c)(122) to read

as follows:

Sec. 52.1970 Identification of plan.

* * * * *

(c) * * *

(122) On August 30, 1996, the Director of the Oregon Department of

Environmental Quality submitted to the Regional Administrator of EPA a

revision to the Carbon Monoxide State Implementation Plan for the

Portland area containing a Maintenance Plan that demonstrated continued

attainment of the NAAQS for carbon monoxide through the year 2007.

(i) Incorporation by reference.

(A) Letter dated August 30, 1996, from Oregon to EPA requesting the

redesignation of the Portland carbon monoxide nonattainment area to

attainment and submitting the Maintenance Plan; Revision to the State

Implementation Plan: Carbon Monoxide Maintenance Plan and Redesignation

Request for the Portland Metro Area, adopted July 12, 1996.

(B) Letter dated April 17, 1997, from Oregon to EPA submitting

replacement pages to the Maintenance Plan and appendices.

(ii) Additional material.

(A) Appendices to the Maintenance Plan and Redesignation Request

for Portland (Metro) Area--State Implementation Plan Revision for

Carbon Monoxide, dated July 12, 1996: Appendix D2-1 (Volume 3), CO Air

Monitoring Network; Appendix D2-2 (Volume 3), Meteorological Analysis;

Appendix D2-3 (Volume 3), Review of Bag Study Results Which

Demonstrates The DEQ Network of Sites Records Higher CO Concentrations

Than Screened Intersections; Appendix D2-4 (Volume 3), Emission

Inventory and Forecast Portland (Metro) Area (Carbon Monoxide);

Appendix D2-4-1 (Volume 3), Base Year (1990) Emission Inventory

Portland (Metro) Area (Carbon Monoxide); Appendix D2-4-2 (Volume 3),

Attainment Year (1991) Emission Inventory Portland (Metro) Area (Carbon

Monoxide); Appendix D2-4-3 (Volume 3), Regional Emission Forecast

Portland (Metro) Area; Appendix D2-4-4 (Volume 3), Subregional Emission

Inventories and Forecast Portland (Metro) Area (Carbon Monoxide);

Appendix D2-4-5 (Volume 3), Metro Model Assumptions, Link-Based

Emissions Calculation Methodology, and Travel Demand Forecasting Model

Summary; Appendix D2-5 (Volume 3), Conformity Process; Appendix D2-6

(Volume 3), Historical and Projected Population and Households;

Appendix D2-7 (Volume 3), Metro Council Resolution Concerning Portland

CO Maintenance Plan, Emission Budgets, and Contingency Plan; Appendix

D2-8 (Volume 3), CCTMP Zoning Codes Incorporated Into the Portland

Carbon Monoxide Maintenance Plan; Appendix D2-9 (Volume 3), Motor

Vehicle Inspection Program Changes; Appendix D2-10 (Volume 3), Land-Use

Measures and TCM Substitution; Appendix D2-11 (Volume 3), New Source

Review Program Changes; Appendix D2-12 (Volume 3), Rollforward

Analysis; Appendix D2-13 (Volume 3), CCTMP Zoning Codes Used as

Supporting Documentation in the Portland Carbon Monoxide Maintenance

Plan; Appendix D2-14 (Volume 3), Miscellaneous Oregon Administrative

Rule Amendments--Supporting Rules, OAR Chapter 340, Section 340-020-

0047 (State of Oregon Clean Air Act Implementation Plan); and Sections

340-031-0520 and 340-031-0530 (Maintenance Area Designation).

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. 81.338, the table for ``Oregon-Carbon Monoxide'' is

amended by revising the entry for the Portland area to read as follows:

Sec. 81.338 Oregon.

* * * * *

Oregon-Carbon Monoxide

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Designation Classification

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

Date\1\ Type Date\1\ Type

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*

Portland Area:

Portland Metro Service

District Boundary:

Clackamas County (part).. .................... Attainment.......... .................... ...............

Multnomah County (part).. .................... Attainment.......... .................... ...............

Washington County (part). .................... Attainment.......... .................... ...............

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

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[FR Doc. 97-23227 Filed 8-29-97; 8:45 am]

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