CRESTON POST IS AN OPERATING FACILITY WHICH TREATS WOOD WITH PCP. THE FACILITY HAS BEEN IN OPERATION SINCE APPROXIMATELY 1957. EPA HAS TAKEN A NUMBER OF SOIL SAMPLES FROM THE SITE WHICH INDICATE ELEVATED LEVELS OF PCP. AN INVESTIGATION CONDUCTED ON JUNE 20, 21, 1990 SHOWED CONCENTRATIONS OF PCP IN SURFACE SOIL SAMPLES THAT RANGED FROM RELATIVELY LOW LEVELS TO 6,300/MG/KG. CONDITIONS AT THE CRESTON POST SITE PRESENT AN IMMEDIATE AND SUBSTANTIAL THREAT TO HUMAN HEALTH AND THE ENVIRONMENT AND MEET THE CRITERIA FOR INITIATING A REMOVAL ACTION.