00-14172. Approval and Promulgation of Implementation Plans; Arizona State Implementation Plan Revision, Maricopa County Environmental Services Department

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Proposed rule.

SUMMARY:

EPA is proposing to approve a revision to the Maricopa County Environmental Services Department (MCESD) portion of the Arizona State Implementation Plan (SIP). This revision concerns volatile organic compound (VOC) emissions from ferrous sand casting operations. We are proposing to approve a local rule to regulate this emission source under the Clean Air Act as amended in 1990 (CAA or the Act).

DATES:

Any comments on this proposal must arrive by July 12, 2000.

ADDRESSES:

Mail comments to Andrew Steckel, Rulemaking Office Chief (AIR-4), U.S. Environmental Protection Agency, Region IX, 75 Hawthorne Street, San Francisco, CA 94105.

You can inspect copies of the submitted rule and EPA's technical support documents (TSDs) at our Region IX office during normal business hours. You may also see copies of the submitted rule at the following locations:

Arizona Department of Environmental Quality, 3033 North Central Avenue, Phoenix, AZ 85012

Maricopa County Environmental Services Department, Air Quality Division, 1001 North Central Avenue, Suite 201, Phoenix, AZ 85004

FOR FURTHER INFORMATION CONTACT:

Al Petersen, Rulemaking Office (AIR-4), Air Division, U.S. Environmental Protection Agency, Region IX, 75 Hawthorne Street, San Francisco, CA 94105-3901, [phone].

SUPPLEMENTARY INFORMATION:

This proposal addresses the following local rule: MCESD Rule 347. In the Rules and Regulations section of this Federal Register, we are approving this local rule in a direct final action without prior proposal because we believe this SIP revision is not controversial. If we receive adverse comments, however, we will publish a timely withdrawal of the direct final rule and address the comments in subsequent action based on this proposed rule. We do not plan to open a second comment period, so anyone interested in commenting should do so at this time. If we do not receive adverse comments, no further activity is planned. For further information, please see the direct final action.

Dated: May 12, 2000.

Laura Yoshii,

Acting Regional Administrator, Region IX.