Air Plan Approval; Iowa; Amendment to the Administrative Consent Order, Grain Processing Corporation, Muscatine, Iowa

The Environmental Protection Agency (EPA) is taking direct final action to approve a revision to the State Implementation Plan (SIP) submitted by the State of Iowa for the purpose of incorporating an amendment to the Administrative Consent Order (ACO) for Grain Processing Corporation (GPC), Muscatine, Iowa. The revision amends the ACO to change the date for completion of performance testing to allow the state more time to complete processing air construction permit applications submitted by GPC and specify testing requirements as appropriate in the final permits. This revision will not impact the schedule for installation and operation of control equipment, will not alter any other compliance dates, and will not adversely affect air quality in Muscatine, Iowa. The state held a 30-day comment period, during which no comments were received.