THE TOWN OF ONALASKA (TOWNSHIP) OWNED AND OPERATED AND ELEVEN-ACRE LANDFILL (AKA BRICE PRAIRIE LAND & LYTLES DUMP) IN LA CROSSE COUNTY, WI. FROM 1969 TO 1980. THE SITE IS AN MPL AND WITHIN 500 FEET OF THE BLACK RIVER, NEAR WHERE IT MEETS THE MISSISSIPPI RIVER. THE LANDFILL ACCPTED RESIDEN- TIAL, COMMERCIAL AND INDUSTRIAL WASTES. THE SITE OPERATORS BURIED VARIOUS LABORATORY SOLVENTS FROM 1971 TO 1974 AND SIGNIFICANT QUANTITIES OF NAPHTHA AND PTL-1009, A SYNTHETIC LUBRICANT, FROM 1975 TO 1978. THE EQUIVALENT OF 2,500 DRUMS OF SOLVENT WASTES ARE ESTIMATED TO HAVE BEEN DISPOSED OF ON SITE. ALTHOUGH THE LANDFILL WAS COVERED IN 1982, WASTE PRODUCTS ARE LEACHING THROUGH THE HIGHLY PERMEABLE SOIL IN THE AREA. SAMPLING BY THE WISCONSIN DNR HAS ESTABLISHED THAT GROUNDWATER AND A PRIVATE WELL ARE CONTAMINATED WITH VARIOUS ORGANIC COMPOUNDS. THE DNR ORDERED THE CLOSE OF THE LANDFILL IN 1980 DUE TO DOWN GRADIENT GROUNDWATER CON- TAMINATION. A LOCAL CITIZEN SUED THE TOWNSHIP FOR CONTAMIN- ATION OF HIS HOME WELL WHICH WAS LOCATED ADJACENT TO THE ONALASKA LANDFILL. THE LAWSUIT WAS FILED AGAINST THE TOWN- SHIP, OUTERS LABORATORIES, AND METALLICS, THE KNOWN WASTE CONTRIBUTORS. THE CASE WAS SETTLED AND THE TOWNSHIP AGREED TO DRILL A NEW WELL. THE CITIZEN HAS SINCE LEFT THE AREA. THE CONTAMINANT BARIUM, FOUND IN THE PRIVATE WELL WATER, WAS AN ISSUE IN THE LITIGATION BUT ITS SOURCE HAS NEVER BEEN PINPOINTED. A PRP SEARCH HAS BEEN COMPLE