Approval and Promulgation of State Implementation Plans; Wyoming

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[WY-001-0002b and WY-001-0003b; FRL-6344-3]

Approval and Promulgation of State Implementation Plans; Wyoming

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: EPA is proposing to approve two revisions to the Wyoming State

Implementation Plan (SIP) regarding particulate matter. The SIP

revisions include clarification and revisions to the particulate matter

control requirements in section 25 of the Wyoming Air Quality Standards

and Regulations (WAQSR) for the FMC Corporation in the Trona Industrial

Area of Wyoming, and the addition of guidelines for best available

control technology (BACT) in the minor source construction permitting

requirements of section 21 of the WAQSR for large mining operations.

We are also revising 40 CFR 52.2620 to list subsections 21(a)(iv),

24(a)(xix), 24(b)(iv), and 24(b)(xii)(H) of the WAQSR in the

``Incorporation by reference'' section. We approved these subsections

in previous SIP approvals (on November 29, 1994 and on November 3,

1995, respectively) but we inadvertently neglected to identify those

subsections as incorporated into the SIP in the CFR.

In the Rules and Regulations section of this Federal Register, we

approve the State's submittals as a direct final rule without prior

proposal because we view this as a noncontroversial action and

anticipate no adverse comments. A detailed rationale for the approval

is set forth in the preamble of the direct final rule. If no adverse

comments are submitted, we will not take further action on this

proposed rule. If we receive adverse comments, we will publish a timely

withdrawal of the direct final rule in the Federal Register and it will

not take effect. We will address all public comments in a subsequent

final rule based on this proposed rule. We will not institute a second

comment period on this action. Any parties interested in commenting

must do so at this time.

DATES: Comments must be received in writing on or before June 18, 1999.

ADDRESSES: You should mail your written comments to Richard R. Long,

Director, Air and Radiation Program, Mailcode 8P-AR, Environmental

Protection Agency (EPA), Region VIII, 999 18th Street, Suite 500,

Denver, Colorado, 80202. Copies of the documents relative to this

action are available for inspection during normal business hours at the

Air and Radiation Program, Environmental Protection Agency, Region

VIII, 999 18th Street, Suite 500, Denver, Colorado 80202-2466. Copies

of the State documents relevant to this action are available for public

inspection at the Department of Environmental Quality, 122 West 25th

Street, Cheyenne, Wyoming 82002.

FOR FURTHER INFORMATION CONTACT: Vicki Stamper, EPA Region VIII, (303)

312-6445.

SUPPLEMENTARY INFORMATION: See the information provided in the Direct

Final action of the same title which is located in the Rules and

Regulations section of this Federal Register.

Authority: 42 U.S.C. 7401 et seq.

Dated: May 7, 1999.

Jack W. McGraw,

Acting Regional Administrator, Region VIII.

[FR Doc. 99-12583 Filed 5-18-99; 8:45 am]

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