Clean Air Act Approval and Promulgation of State Implementation Plans; Connecticut: PM10 Prevention of Significant Deterioration Increments; and Approval of a Second 1-Year Extension of PM10 Attainment Date for New Haven

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[CT27-1-7200b; A-1-FRL-5667-3]

Clean Air Act Approval and Promulgation of State Implementation

Plans; Connecticut: PM10 Prevention of Significant Deterioration

Increments; and Approval of a Second 1-Year Extension of PM10

Attainment Date for New Haven

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA is proposing full approval of a State Implementation Plan

(SIP) revision submitted by the State of Connecticut, which replaces

the total suspended particulate (TSP) prevention of significant (PSD)

increments with increments for PM10 (particulate matter with an

aerodynamic diameter less than or equal to a nominal 10 micrometers).

EPA is also proposing full approval of Connecticut's request for a

second 1-year extension of the attainment date for the New Haven PM10

nonattainment area, based on monitored air quality data for the

national ambient air quality standard for PM10 during the years 1993-

95. These actions are being taken under the Clean Air Act. In the Final

Rules Section of this Federal Register, EPA is approving the

Connecticut's SIP revision and extension request as a direct final rule

without prior proposal because the Agency views this as a

noncontroversial revision and anticipates no adverse comments. A

detailed rationale for the approval is set forth in the direct final

rule. If no adverse comments are received in response to that direct

final rule, no further activity is contemplated in relation to this

proposed rule. If EPA does receive adverse comments, the direct final

rule will be withdrawn and all public comments received will be

addressed in a subsequent final rule based on this proposed rule. EPA

will not institute a second comment period on this proposal. Any

parties interested in commenting on this proposal should do so at this

time.

DATES: Comments must be received on or before April 25, 1997.

ADDRESSES: Comments may be mailed to Susan Studlien, Deputy Director,

Office of Ecosystem Protection, EPA--Region 1, JFK Federal Bldg (CAA),

Boston, MA 02203. Copies of Connecticut's submittal and EPA's technical

support document are available for public inspection by appointment

during normal business hours at the following locations: Office of

Ecosystem Protection, EPA--Region 1, One Congress Street, 11th floor,

Boston, MA 02203; Bureau of Air Management, Department of Environmental

Protection, State Office Building, 79 Elm Street, Hartford, CT 06106;

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

Washington, DC 20460.

FOR FURTHER INFORMATION CONTACT: Jeff Butensky at (617) 565-3583 or

[email protected].

SUPPLEMENTARY INFORMATION: For additional information, see the direct

final rule which is located in the Rules Section of this Federal

Register.

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

Dated: December 9, 1996.

John P. DeVillars,

Regional Administrator, EPA--Region 1.

[FR Doc. 97-7691 Filed 3-25-97; 8:45 am]

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