[Federal Register Volume 61, Number 170 (Friday, August 30, 1996)]
[Proposed Rules]
[Page 45926]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-21983]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[MI50-01-7257b; FRL-5542-2]


Proposal To Approve State Implementation Plan; Michigan; Reid 
Vapor Pressure Standard

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: In this action, the Enivonmental Protection Agency (EPA) is 
proposing to approve a revision to the Michigan State Implementation 
Plan (SIP) for the purpose of establishing a summertime gasoline Reid 
vapor pressure limit of 7.8 pounds per square inch (psi) for gasoline 
sold in Wayne, Oakland, Macomb, Washtenaw, Livingston, St. Clair, and 
Monroe counties. The marketing of less volatile gasoline reduces 
excessive evaporation of fuel during the summer months. Evaporated 
gasoline combines with other pollutants on hot summer days to form 
ground-level ozone, commonly referred to as smog. Ozone pollution is of 
particular concern because of its harmful effects on lung tissue and 
breathing passages. The EPA proposes to approve the State RVP 
requirement as a SIP revision and to find that the requirement is 
necessary for the State to achieve the National Ambient Air Quality 
Standard for ozone.
    In the final rules section of this Federal Register EPA is 
publishing an interim final rule approving this SIP revision for a 
limited time only, from July 1, 1996 to September 15, 1996. In that 
document, EPA explains the basis for the approval and solicits comments 
on that action. This action proposes to make that temporary approval 
permanent and solicits comments.

DATES: Comments on this proposed action must be received by September 
30, 1996.

ADDRESSES: Written comments should be sent to: Carlton T. Nash, Chief, 
Regulation Development Section, Air Programs Branch (AR-18J), Region 5, 
77 West Jackson Boulevard, Chicago, Illinois 60604-3590.

FOR FURTHER INFORMATION CONTACT: Brad J. Beeson at (312) 353-4779.

SUPPLEMENTARY INFORMATION:

I. Background

    For additional information, see the accompanying Interim Final 
rule, which is located in the Rules section of this Federal Register.

II. Action

    The EPA is proposing to approve a revision to Michigan's SIP to 
establish a summertime gasoline RVP limit of 7.8 psi for gasoline sold 
in Wayne, Oakland, Macomb, Washtenaw, Livingston, St. Clair, and Monroe 
counties and is finding that such a requirement is necessary for the 
area to attain the ozone National Ambient Air Quality Standard for 
ozone.

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

    Dated: June 21, 1996.
David A. Ullrich,
Acting Regional Administrator.
[FR Doc. 96-21983 Filed 8-29-96; 8:45 am]
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