Approval and Promulgation of Implementation Plans; Indiana

The EPA is approving revisions to volatile organic compound (VOC) requirements for Eli Lilly and Company (Eli Lilly) for a facility which it owns and operates in Marion County, Indiana. On February 11, 2004, the Indiana Department of Environmental Management (IDEM) submitted a Commissioner's Order requesting the revision as an amendment to the Indiana State Implementation Plan (SIP). The February 11, 2004 submission supplements a December 19, 2001 submission. Eli Lilly owns and operates a synthesized pharmaceutical manufacturing facility in Marion County. This SIP revision covers new and existing sources in Eli Lilly's Building 110 pilot plant. Eli Lilly is seeking an exemption from 326 Indiana Administrative Code (IAC) 8-5- 3, control requirements for synthesized pharmaceutical manufacturing, under the site-specific reasonably available control technology (RACT) rule, 326 IAC 8-1-5. Eli Lilly is seeking this exemption for reactors, filters, centrifuges, and vacuum dryers at Building 110. Other Building 110 sources, such as air dryers, in-process tanks, and storage tanks, comply with 326 IAC 8-5-3. The total VOC annual emissions from Building 110 are limited to less than 10 tons per year (TPY).