MN 2006 MN01-0033-00 Minnewawa Aitkin County Eutrophic Yes 4a 4b SEGMENT: Caseyville TWP. West MWWTP 23043 ;;; ASSESSMENT: MBI-5.5(1998 FRSS for Caseyville, Twp. West MWWTP); No WQ standards violations. 2004 Degrading Freshwater Lake 2513 Blackwater System 338.5 Water sample 1 ftp://epa.gov Water sample 2 ftp://epa.gov MN07010202-526 2004 Split MN09020306-506 2004 Rename 53.361654 -92.90124 50000 1000 m meter 003 ADDRESS MATCHING-NEAREST INTERSECTION 012 AIR RELEASE VENT 002 NAD83 2006-03-19 53 m meter 235 003 MEAN SEA-LEVEL 4183 Nutrient/Eutrophication Biological Indicators 2002 2005-08-13 **1/10/04 - UAA prepared and approved 2006-08-13 **1/10/05 - UAA prepared and approved Mercury in Fish Tissue 1998 2005-08-01 Class 2B Warm Water Aquatic Consumption Not Supporting Yes Measured data 2005-06-01 1967-08-13 1967-08-13 121 233 Toxicological Low Physical/Chemical Fair Nutrient/Eutrophication Biological Indicators Yes As a result of the approved TMDL plan for Low Dissolved Oxygen (DO) the Long Prairie River segment 07010108-506 was split into 07010108-534 and 07010108-535. The intent of the split was to differentiate between anthropogenic and natural DO impairment along the former segment (-506). The lower portion (-535) of -506 was considered to be impaired due to both anthropogenic and natural causes while the upstream portion (-534) was considered to be naturally impaired for DO. 4b Airports Impairment will be addressed by implementing a locally developed plan that includes the remedial actions necessary for problem resolution. Mill tailings Mercury in Fish Tissue Yes TMDL Completed 4a Benzal chloride Benzene Class 2B Aquatic Recreation Insufficient Information Yes no fish collected 1997-08-13 1967-08-13 1967-08-13 987 744 Biological Low Other Aquatic Life Indicators Fair DDT 1967-08-13 State Determines water quality standard is being met Delisted Cyanobacteria Hepatotoxic Microcystins 1967-08-13 Waterbody not in state's jurisdiction PA990928-1200-GGM2041010B Loyalsock Creek (Unt 20410) 990928-1200-GGM Hypereutrophic No 2007 Coastal and Marine Surface Waters Class SB Habitat for marine fish, other aquatic life and wildlife; commercial shellfish harvesting where authorized; recreation; industrial water supply; and navigation. 4a 2 This assessment unit was assessed as Partially Supporting for 305b purposes based on evaluated data, with a data quality rating of low. See assessment methodology for determination of data quality rating. 2001 Degrading Great Lake - Open Water 3.14 Stream 33.9 CORGCB03_5700 2001 Split CORGAL14L_5800 2003 Join 53.361654 122.94 50000 1000 m meter 023 GPS - UNSPECIFIED 012 AIR RELEASE VENT 003 WGS84 2006-03-19 53 m meter 235 003 MEAN SEA-LEVEL 074 U.S. MINOR OUTLYING ISLANDS 123 Dichlorotrifluoroethane 1998 2008 Low Green Diallate Shellfishing Not Supporting Yes no fish collected 1997-08-13 1967-08-13 1967-08-13 434 552 Biological Low Other Aquatic Life Indicators Fair Cyclohexane No Airports Impairment will be addressed by implementing a locally developed plan that includes the remedial actions necessary for problem resolution. Mill tailings Dichlorotrifluoroethane Yes 5 Benzal chloride Benzene 6C Description for new user category 987 Name for new assessment method 1354 County Name for new assessment location 24 MN 123651.15 40000 Other State Source 54 Name for another new Topic Great Lakes Shoreline 20 NA 123651.15 100000 NHD 91456 Name for new Topic Stream/Creek/River Acres 3