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Record of Decision System (RODS)

RESIN DISPOSAL

Abstract

Site Name:  RESIN DISPOSAL
Address:  TOP OF STILLEY AVENUE 
City & State:  JEFFERSON BOROUGH  PA  15025
County:  ALLEGHENY
 
EPA ID:  PAD063766828
EPA Region:  03
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-91/113
ROD Date:  06/28/1991
Operable Unit(s):  01
 
Media:  SOIL DEBRIS GROUND WATER
 
Contaminant:  VOCS, BENZENE, TOLUENE, XYLENES, OTHER ORGANICS, NAPTHALENE, PAHS, PHENOLS
 
Abstract:  THE 26-ACRE RESIN DISPOSAL SITE IS AN INACTIVE INDUSTRIAL LANDFILL AND FORMER COAL STRIP MINING AREA IN JEFFERSON BOROUGH, ALLEGHENY COUNTY, PENNSYLVANIA. THE SITE IS BORDERED TO THE NORTH AND WEST BY RESIDENTIAL AREAS, AND TO THE EAST AND SOUTH BY UNDEVELOPED LAND. THE SITE OVERLIES A BEDROCK AQUIFER, AND IS ALSO IN CONTACT WITH THE PITTSBURGH COAL FORMATION, A SOURCE OF NON-POTABLE GROUND WATER. PRIOR TO 1950, COAL STRIP MINING OPERATIONS WERE CONDUCTED ON AND NEAR THE SITE. FROM 1950 TO 1964, 85,000 TONS OF PROCESS WASTES CONSISTING OF PETROLEUM AND COAL-DERIVED CHEMICALS MIXED WITH CLAY WERE DISPOSED OF IN A PREVIOUSLY MINED ONSITE AREA, AND EARTHEN DIKES WERE USED TO CONTAIN THESE WASTES. BETWEEN 1980 AND 1984, PRIVATE INVESTIGATIONS IDENTIFIED THAT CONTAMINANTS FROM THE LANDFILL HAD MIGRATED TO THE PITTSBURGH COAL FORMATION, AND THE SOIL AND PERCHED GROUND WATER DOWNSLOPE. SUBSEQUENTLY, THE SITE OWNERS INSTALLED A LEACHATE COLLECTION SYSTEM AND AN OIL/WATER SEPARATOR. EPA INVESTIGATIONS IN 1988 FURTHER CHARACTERIZED CONTAMINATED MEDIA AND ANALYZED POTENTIAL CONTAMINANT PATHWAYS. THIS RECORD OF DECISION (ROD) ADDRESSES SOURCE CONTROL, AS WELL AS PREVENTING MIGRATION OF CONTAMINATED GROUND WATER IN THE PITTSBURGH COAL FORMATION. A SUBSEQUENT ROD WILL ADDRESS ANY REMEDIATION OF GROUND WATER THAT MAY BE NECESSARY. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING SOIL, DEBRIS, AND GROUND WATER ARE VOCS INCLUDING BENZENE, TOLUENE, AND XYLENES; AND OTHER ORGANICS INCLUDING NAPTHALENE, PAHS AND PHENOLS.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES CAPPING THE LANDFILL WITH A MULTI-LAYER CAP, AND UPGRADING THE LANDFILL DIKE; RELOCATING A SANITARY SEWER LOCATED ALONG THE NORTHEAST BORDER OF THE LANDFILL TO ALLOW FUTURE ACCESS WITHOUT DISTURBING THE LANDFILL CAP; INSTALLING A NEW OIL/WATER SEPARATOR FOR LEACHATE TREATMENT, WITH DISCHARGE OF AQUEOUS PHASES TO A PUBLICLY OWNED TREATMENT WORKS (POTW), AND POSSIBLE OFFSITE RECLAMATION OF NAPLS FOR USE AS AN ENERGY SOURCE; INSTALLING A SKIMMER WELL SYSTEM TO REMOVE NAPLS FROM GROUND WATER FOR USE AS AN ENERGY SOURCE; MONITORING GROUND WATER AND SURFACE WATER; AND IMPLEMENTING INSTITUTIONAL CONTROLS INCLUDING DEED RESTRICTIONS, AND SITE ACCESS RESTRICTIONS SUCH AS FENCING. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $4,348,000, WHICH INCLUDES AN ANNUAL O&M COST OF $132,000 FOR 30 YEARS.

PERFORMANCE STANDARDS OR GOALS; CHEMICAL-SPECIFIC GOALS WERE NOT PROVIDED.
 
Remedy:  THE SELECTED REMEDY IS A PERMANENT REMEDY FOR CONTAINING THE WASTE MATERIAL WHICH IS THE SOURCE OF SOIL AND GROUND WATER CONTAMINATION AT THE SITE.

THE SELECTED REMEDY INCLUDES THE FOLLOWING MAJOR COMPONENTS;
* INSTALLATION OF A MULTI-LAYER CAP AND INFILTRATION CONTROL SYSTEM FOR THE LANDFILL TO PREVENT FURTHER MIGRATION OF CONTAMINANTS;
* INSTALLATION OF A SKIMMER WELL SYSTEM DOWNGRADIENT OF THE LANDFILL TO COLLECT FLOATING PRODUCT IN GROUND WATER THAT MAY OTHERWISE MIGRATE OFFSITE VIA THE MINE VOIDS;
* UPGRADING OF THE LOWER LANDFILL DIKE TO INCREASE ITS STABILITY;
* RELOCATION OF THE SANITARY SEWER ALONG THE NORTHEAST BORDER OF THE LANDFILL TO ALLOW FUTURE ACCESS WITHOUT UNDULY DISTURBING THE LANDFILL CAP SYSTEM;
* INSTALLATION OF AN UPGRADED OIL/WATER SEPARATOR DOWNSLOPE OF THE LEACHATE COLLECTION TRENCH;
* CONSTRUCTION OF A FENCE AROUND THE PERIMETER OF THE SITE TO PREVENT UNAUTHORIZED SITE ACCESS;
* INSTITUTING DEED RESTRICTIONS; AND
* MONITORING GROUND AND SURFACE WATER AND IMPLEMENTING A SITE MAINTENANCE PROGRAM.
 
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