Clean Air Act Approval and Promulgation of State Implementation Plan; Colorado; Prevention of Significant Deterioration; Designation of Areas for Air Quality Planning Purposes

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 52 and 81

[CO-001-0015b; FRL-5700-4]

Clean Air Act Approval and Promulgation of State Implementation

Plan; Colorado; Prevention of Significant Deterioration; Designation of

Areas for Air Quality Planning Purposes

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of proposed rulemaking.

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SUMMARY: EPA proposes to approve revisions to Colorado's prevention of

significant deterioration (PSD) permitting requirements in Regulation

No. 3, which were submitted as revisions to the State Implementation

Plan (SIP) by the Governor on August 1, 1996. EPA also proposes to

delete the TSP area designation table and to revise the PM-10 area

designation table in 40 CFR part 81 for Colorado. In addition, EPA

proposes to amend the language in 40 CFR 52.343(a)(3) to clarify

Colorado's PSD permitting authority.

In the final rules section of this Federal Register, the EPA is

approving the State's SIP revision and promulgating these amendments as

a direct final rule without prior proposal because the Agency views

this action as noncontroversial and anticipates no adverse comments. A

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

rule. If no adverse comments are received in response to this proposed

rule, no further activity is contemplated in relation to this rule. If

EPA receives adverse comments, then 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withdrawn and all public comments received will be addressed in a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 notice. Any parties

interested in commenting on this notice should do so at this time.

DATES: Comments on this proposed action must be received in writing by

April 21, 1997.

ADDRESSES: Written comments on this action should be addressed to Vicki

Stamper, 8P2-A, at the EPA Regional Office listed below. Copies of the

documents relevant to this proposed rule are available for public

inspection during normal business hours at the following locations: Air

Program, Environmental Protection Agency, Region VIII, 999 18th Street,

Suite 500, Denver, Colorado 80202-2466; and Colorado Department of

Public Health and Environment, Air Pollution Control Division, 4300

Cherry Creek Drive South, Denver, Colorado 80202-1530.

FOR FURTHER INFORMATION CONTACT: Vicki Stamper, 8P2-A, at (303) 312-

6445.

SUPPLEMENTARY INFORMATION: See the information provided in the Direct

Final notice of the same title which is located in the Rules Section of

this Federal Register.

Dated: February 27, 1997.

Patricia D. Hull,

Acting Regional Administrator.

[FR Doc. 97-7101 Filed 3-19-97; 8:45 am]

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