NPL SITE CONTAMINATED PRIMARILY WITH PLYCYCLIC AROMATIC HYDROCARBONS (PAHs) FROM HISTORIC TAR REFINERY ON PROPERTY. EPA ISSUED ACTION MEMORANDUM WITH IMMINENT AND SUBSTANTIAL ENDANGERMENT DETERMINATION AND SELECTED RESPONSE ACTIONS REQUIRED TO MITIGATE THREAT DUE TO CONTAMINANTS IN SURFACE SOILS, GROUND WATER, AND SEDIMENTS LOCATED IN DRAINAGE WAYS AND THE ADJACENT MONOGAHELA RIVER. EPA SEEKS IMPLEMENTATION OF SELECTED RESPONSE ACTION, REIMBURSEMENT OF ITS FUTURE OVERSIGHT COSTS AND REIMBURSEMENT OF ITS PAST COSTS INCURRED AT THE SITE.