THIS CASE INVOLVES CLEANUP, BY TIME CRITICAL REMOVAL ACTION, OF PCB AND PAH CONTAMINATION AT THE CORWIN COMPRESSOR STATION. THE CORWIN COMPRESSOR STATION, LOCATED NEAR CORWIN, KS, WAS PART OF A MAIN-LINE NATURAL GAS TRANSMISSION SYSTEM OWNED AND OPERATED BY WILLIAMS NATURAL GAS CO. IT IS NO LONGER IN OPERATION, AND IS NOT CURRENTLY OWNED BY WILLIAMS. COMPRESSED AIR WAS USED TO START THE NATURAL GAS COMPRESSORS USED TO MOVE THE NATURAL GAS THROUGH THE TRANSMISSION LINES. LUBRICANTS CONTAINING PCBS ARE BELIEVED TO HAVE BEEN USED IN THE AIR COMPRESSOR SYSTEM. THE PCBS CONTAMINATED CONDENSATES WHICH FORM IN THE AIR COMPRESSOR SYSTEM. PCBS WERE RELEASED TO THE ENVIRONMENT ALONG WITH THESE CONDENSATES. THE CORWIN STATION WAS ONE OF SEVERAL COMPRESSOR STATIONS FOR WHICH WILLIAMS PREVIOUSLY CONDUCTED SITE INVESTIGATIONS PURSUANT TO AN ADMINISTRATIVE CONSENT ORDER. WE ANTICIPATE NEGOTIATING A FOLLOWUP CONSENT ORDER CALLING FOR WILLIAMS TO CONDUCT THE REMOVAL ACTION DETERMINED TO BE NECESSARY AS A RESULT OF THE INFORMATION OBTAINED IN THIS SITE INVESTIGATION.