1. SECTION 104(B), 106(A), AND 122 OF THE COMPREHENSIVE EN- VIRONMENTAL RESPONSE, COMPENSATION AND LIABILITY ACT, 42 U.S.C. SECTIONS 9604, 9606 AND 9622 ( CERCLA ). 2. RAB VALLEY WOOD PRESERVING SITE PANAMA, LE FLORE COUNTY, OKLAHOMA 3. THE SITE IS LOCATED IN LE FLORE COUNTY , OKLAHOMA, SOUTH- EAST OF THE TOWN OF PANAMA AND BOUNDED BY KANSAS CITY SOUTHERN RAILROAD TO THE WEST, AND TECUMSEH STREET TO THE NORTH. THE SITE INCLUDES 36 ACRES OF PROCESS AREA AND ADDITIONAL ACREAGE TO THE SOUTH. THE TOTAL SIZE OF THE SITE IS ESTI- MATED TO BE 200 ACRES. SEVERAL WOOD PRESERVING COMPANIES OPERATED THE FACILITIES AT THE SITE INTERMITTENTLY FROM THE EARLY 1900'S TO 1976. THE FACILITIES AT THE SITE WERE UTILIZIED FOR THE PRESSURIZED TREATMENT OF WOOD, USING COAL TAR CREOSOTE AND PENTACHLOROPHENOL. THE TREATMENT PROCESS USED A PRESSURE TANK TO REMOVE INTERSTITIAL FLUIDS FROM THE RAW WOOD AND THEN REPLACED THE FLUIDS WITH CREOSOTE AND PENTACHLOROPHENOL BASED OILS. THE FLUIDS NOT ABSORBED DURING THE PRESSURE TREATMENT WAS PUT INTO A SYSTEM OF LAGOONS, WHICH POSSIBLY ALLOWED SOME OF THE OILS TO BE RECLAIMED AND REUSED. SINCE CREO- SOTE IS ACTUALLY A COMBINATION OF SEVERAL ORGANIC COM- POUNDS CONTAINING CHAINS OF CARBON ATOMS IN AEQUENCE, THE TERM POLYNUCLEAR AROMATIC HYD