Reissuance of General NPDES Permits (GPs) for Aquaculture Facilities in Idaho Subject to Wasteload Allocations Under Selected Total Maximum Daily Loads (Permit Number IDG-13-0000), Cold Water Aquaculture Facilities in Idaho (Not Subject to Wasteload Allocations) (Permit Number IDG-13-1000), and Fish Processors Associated With Aquaculture Facilities in Idaho (Permit Number IDG-13-2000)

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On September 27, 2004, a general permit regulating the activities of aquaculture facilities in Idaho and associated on-site fish processors expired. On June 19, 2006, the Director, Office of Water and Watersheds, EPA Region 10, proposed to reissue three general permits to cover facilities covered under the previous permit. EPA provided a public meeting on June 29, 2006 and a public hearing on September 26, 2006, both in Twin Falls, Idaho, in the midst of a 103- day public comment period. On June 7, 2007, the Director reproposed modified draft permits for GPs IDG130000 and IDG132000; the 45-day comment period ended on July 23, 2007. On October 5, 2007, the Idaho Department of Environmental Quality certified under Section 401 of the Clean Water Act that, if the permittees comply with the terms and conditions imposed by the permits, there is reasonable assurance that the discharges will comply with the applicable requirements of the Clean Water Act and Idaho Water Quality Standards. EPA received 38 comments on the GPs and has prepared a Response to Comments to explain changes made in the permits based on the comments and reasons for not making changes. EPA has determined that each fac