Assessment Comments
Assessment based on special study conducted by Wisconsin DNR in summer 1997 and 1998 and on results of U.S. EPA/IDNR fish tissue monitoring in 2000.
Basis for Assessment
SUMMARY: The Class A (primary contact recreation) uses remain "not assessed." The Class B(WW) aquatic life uses remain assessed as "fully supporting / threatened." Fish consumption uses remain assessed as "fully supported." The sources of data used for this assessment are (1) Sullivan and Endris (1998) and (2) results of U.S. EPA/DNR fish tissue (RAFT) monitoring in 2000 downstream from Guttenberg. EXPLANATION: The Class A uses were not assessed due to lack of information on levels of indicator bacteria in this reach of river. The Class B(WW) uses remain assessed as "fully supporting / threatened" based on the 1997 study of dissolved oxygen levels by Sullivan and Endris (1998) of the Wisconsin DNR (see assessment for the 1998 report above). Fish consumption uses remain assessed as "fully supported" based on results of EPA/DNR fish tissue (RAFT) monitoring in 2000 downstream from Guttenberg that showed levels of contaminants in composite samples of fillets from channel catfish and smallmouth bass were less than ½ the respective FDA action levels and DNR levels of concern. With the exception of DDE (0.0052 mg/kg), levels of all contaminants in both samples were below their respective detection levels.
