Approval and Promulgation of Implementation Plans; Indiana

EPA is approving revisions to particulate matter (PM) emissions regulations for Cerestar USA, Inc. (Cerestar). Cerestar is located in Lake County, Indiana. The Indiana Department of Environmental Management (IDEM) submitted the revised regulations on February 16, 2001, as amendments to its State Implementation Plan (SIP). The revisions include the elimination of 18 emission points, the addition of 39 new emission points, and a change in the way the short- term emission limits are expressed (from pounds of particulate matter per ton of product to grains per dry standard cubic feet). One of the revisions also changes the name of the facility listed in the rules from American Maize Products (AMAIZO) to Cerestar USA, Inc. These SIP revisions result in an overall decrease in allowed PM emissions of about 48 tons per year (tpy).