Clean Air Act Approval and Promulgation of PMINF10 State Implementation Plan for Colorado; Telluride; Revisions to the Maintenance Demonstration

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[CO48-1-7008b & CO-001-0005b; FRL-5607-5]

Clean Air Act Approval and Promulgation of PM10 State

Implementation Plan for Colorado; Telluride; Revisions to the

Maintenance Demonstration

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA proposes to approve the State implementation plan (SIP)

revisions for Telluride as submitted by the Colorado Governor with a

letter dated April 22, 1996. EPA proposes that the April 22, 1996

submittal now satisfies the State's April 21, 1994 commitment to adopt

additional control measures in Telluride as necessary to demonstrate

maintenance of the National Ambient Air Quality Standards (NAAQS)

through December 31, 1997, for particulate matter with an aerodynamic

diameter less than or equal to a nominal 10 micrometers (PM10).

Based on that commitment, EPA conditionally approved the quantitative

milestones element of the Telluride PM10 SIP on September 19,

1994. The April 22, 1996 submittal incorporates new street sanding

requirements and demonstrates maintenance of the standard through 1997.

EPA proposes to approve these revisions, and therefore, convert its

September 19, 1994 conditional approval to a full approval.

In the Final Rules Section of this Federal Register, EPA is

approving the State's SIP revisions 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

EPA's actions 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 and the direct final rule will become

effective. If EPA receives 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be withdrawn and all public comments received will be addressed in a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 action. Any parties

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

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

November 4, 1996.

ADDRESSES: Written comments on this action should be addressed to

Richard R. Long, 8P2-A, at the EPA Regional Office listed below. Copies

of the State's submittal and documents relevant to this proposed rule

are available for inspection during normal business hours at the

following locations: Air Program, Environmental Protection Agency,

Region VIII, 999 18th Street, suite 500, Denver, Colorado 80202-2405;

and Colorado Department of Health, Air Pollution Control Division, 4300

Cherry Creek Drive South, Denver, Colorado 80222-1530.

FOR FURTHER INFORMATION CONTACT: Amy Platt, Air Program, EPA, Region

VIII, at (303) 312-6449.

SUPPLEMENTARY INFORMATION: See the information provided in the Direct

Final action which is located in the Rules Section of this Federal

Register.

Dated: August 29, 1996.

Patricia D. Hull,

Regional Administrator.

[FR Doc. 96-25466 Filed 10-3-96; 8:45 am]

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