Approval and Promulgation of Air Quality Implementation Plans; Louisiana; Alternative Emission Control Plan for Dow Chemical, U.S.A., Louisiana Division, Plaquemine, LA

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The EPA is announcing final approval of the alternative emission reduction (bubble) plan for the Dow Chemical Plaquemine facility as a revision to the Louisiana State Implementation Plan (SIP). The bubble plan uses the emissions reduction credit (ERC) from a process modification at the Glycol II expander unit in lieu of controlling emissions from four volatile organic compounds (VOC) storage tanks. The bubble plan was reviewed for consistency with the final Emissions Trading Policy Statement (ETPS) published by the EPA in the Federal Register on December 4, 1986. The ERC is determined to be valid for emissions trading.