THIS IS A RESPONSE ACTION AGAINST THE RESPONDENT UNDER SECTION 106 OF CERCLA TO COMMENCE AND COMPLETE THE SITE INVESTIGATION, SAMPLING ACTIVITIES, AND REMOVAL OF HAZARDOUS SUBSTANCES, POLLUTANTS OR CONTAMINANTS AT RESPONDENT'S KEMMERER NATURAL GAS COMPRESSOR STATION. EPA HAS DETERMINED THAT RESPONDENT'S KEMMERER FACILITY MAY PRESENT AN IMMINENT AND SUBSTANTIAL ENDANGERMENT TO THE PUBLIC HEALTH OR WELFARE OR THE ENVIRONMENT BECAUSE OF AN ACTUAL OR THREATENED RELEASE OF HAZARDOUS SUBSTANCES, POLLUTANTS OR CONTAMINANTS.