2009-10-22_AgendaPacket - Laserfiche WebLink

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~~ ~ ~- ~ ~,~~ ~~ ~ _ _~- ~ SP 14 2009 520 Lafayette Road North ~ St.PauI,MN 55155-4194 ~ 651-296-6300 ~ 800-675-3843 ~ 651-282-5332 TTY ~ www.pca.state.mn.us September 2009 TO: Interested Parties RE: Draft 2010 List of Impaired Waters and Revisions to Appendix A of the Approved Statewide Mercury TMDL Every two years, the Minnesota Pollution Control Agency (MPCA) is required by the U.S. Environmental Protection Agency (EPA), through the Clean Water Act, to submit a list of impaired waters to EPA for their review and approval. 1. The Draft 2010 List of Impaired Waters and Stapportin~ Documentation In accordance with the requirements of Section 303(d) of the Federal Clean Water Act (CWA), the MPCA will be conducting a series of public informational meetings across the state to discuss its year 2010 draft list of stream segments and lakes that have impaired designated uses and for which the MPCA proposes to complete total maximum daily load (TMDL) reports. Each TMDL is pollutant-specific, defining the maximum amount of each pollutant that can be released and assimilated in the receiving water from point and nonpoint sources, thereby allowing the receiving water to meet water quality standards. The MPCA is required to list, prioritize, and attach a schedule which estimates starting dates and completion dates for developing the TMDL for each affected reach or lake. Schedules are estimated because pollutants vary in complexity and schedules must be consistent with basin planning. Please note this is not a schedule of when the water body will no longer be impaired. The draft 2010 List contains 1774 impairments, including 37g new TMDL listings, among which are impairments for excess nutrients in lakes, perfluorooctane sulfonate (PFOS) in fish in streams and lakes, and excess nitrates in waters protected for drinking water. The Inventory and Listing EXCEL file on the MPCA TMDL List web site contains many tabs; the first seven are the most pertinent. This file and the Guidance Manual file are scheduled to be available for review by September 24, 2009. They are as follows: ® 'The 2010 draft 'TIYIDL List of impaired waters -these waters are not meeting water quality standards and need a TMDL pollution reduction study plan ® T'e Inventory of Alt Impaired Waters -this tab is a compilation of all impaired waters, including the draft TMDL List, those waters for which a TMDL has already been approved by EPA but are not yet meeting water quality standards, and those waters naturally impaired and therefore not requiring a TMDL Plan. St. Paul ~ Brainerd ~ Detroit Lakes ~ Duluth ~ Mankato ~ Marshall ~ Rochester ~ Willmar ~ Printed on 100% post-consumer recycled paper