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

The Environmental Protection Agency (EPA) is proposing to approve revisions to the State Implementation Plan (SIP) for the State of Iowa to incorporate 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 from May 31, 2017, to May 31, 2018, to allow the state more time to complete the remaining air construction permit applications submitted by GPC, and to specify testing requirements as appropriate in the final permits. When the state submitted the request to amend the ACO, twelve of the 107 permits were incomplete. At this time, only two permits have not been issued by the State. The air quality in Muscatine, Iowa, has not been adversely impacted by the remaining pending permit approvals. 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, as explained in the revised Technical Support Document that is part of this docket. This proposal will also address adverse comments submitted to the docket.