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Record of Decision System (RODS)

BERKS SAND PIT

Abstract

Site Name:  BERKS SAND PIT
Address:  UNOBTAINABLE 
City & State:  LONGSWAMP TOWNSHIP  PA  19539
County:  BERKS
 
EPA ID:  PAD980691794
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-88/060
ROD Date:  09/29/1988
Operable Unit(s):  01
 
Media:  GROUNDWATER SURFACEWATER SEDIMENTS
 
Contaminant:  VOCS, 1,1,1-TCA, 1,1-DCA, 1,1-DCE, PCE
 
Abstract:  THE THREE TO FOUR-ACRE BERKS SAND PIT SITE IS LOCATED IN LONGSWAMP TOWNSHIP, BERKS COUNTY, PENNSYLVANIA. THERE ARE AT LEAST 20 SINGLE FAMILY HOMES WITHIN THE INVESTIGATION AREA, INCLUDING ONE ON TOP OF THE ACTUAL SAND PIT. THE IMMEDIATE VICINITY OF THE SITE IS ZONED FOR LOW DENSITY RESIDENTIAL USE. THE BERKS SAND PIT WAS CREATED BY THE REMOVAL OF SAND AND GRAVEL, BUT REPORTEDLY WAS USED BY AREA RESIDENTS FOR REFUSE DISPOSAL. INDUSTRIAL WASTE ALSO WAS ALLEGED TO HAVE BEEN DISPOSED OF IN THE AREA AROUND THE PIT. HOUSES WERE CONSTRUCTED AND PRIVATE WELLS INSTALLED AT THE LOCATION BEGINNING IN 1978, AFTER THE PIT WAS BACKFILLED. THE SITE FIRST CAME TO THE ATTENTION OF EPA IN JANUARY 1982 WHEN AREA RESIDENTS DETECTED GROUND WATER CONTAMINATION. EMERGENCY ACTIONS WERE UNDERTAKEN BY EPA IN THE SUMMER OF 1983. THE PIT WAS PARTIALLY EXCAVATED AND BACKFILLED WITH CLEAN FILL, BUT NO POCKET OF CONTAMINATION WAS DISCOVERED. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE GROUND WATER, SURFACE WATER, AND SEDIMENTS ARE VOCS INCLUDING 1,1,1-TCA, 1,1-DCA, PCE, AND 1,1-DCE.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES; EXCAVATION OF CONTAMINATED SEDIMENTS WITH OFFSITE TREATMENT BY INCINERATION; GROUND WATER PUMP AND TREATMENT USING AIR STRIPPING AND VAPOR PHASE CARBON ABSORPTION WITH REINJECTION OF TREATED WATER BACK INTO THE AQUIFER; PROVISION OF AN ALTERNATE WATER SUPPLY SYSTEM, SURFACE AND GROUND WATER MONITORING; AND RESTRICTIONS TO PREVENT INSTALLATION OF DRINKING WATER WELLS IN THE CONTAMINATED ACQUIFER. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDY IS $10,773,100, WITH ANNUAL O&M COSTS OF $459,200.
 
Remedy:  THIS REMEDY WILL ADDRESS ALL THE CONTAMINANTS OF CONCERN AT THE BERKS SAND PIT SITE AND WILL BE CONSIDERED THE FINAL REMEDY AFTER IMPLEMENTATION AND OPERATIONS OF THE GROUNDWATER TREATMENT SYSTEM.

THE REMEDY WILL INCLUDE;

- EXCAVATION OF CONTAMINATED SEDIMENTS AND OFFSITE TREATMENT AND DISPOSAL BY INCINERATION
- INSTALLATION AND OPERATION OF A GROUNDWATER EXTRACTION SYSTEM TO REMOVE CONTAMINANTS FROM THE AQUIFER
- CONSTRUCTION AND OPERATION OF AN AIR STRIPPERWITH VAPOR PHASE CARBON ABSORPTION AND THE DISCHARGE OF THE TREATED WATER TO THE AQUIFER BY INJECTION WELLS.
- CONSTRUCTION OF AN ALTERNATE WATER SUPPLY SYSTEM
- CHEMICAL AND BIOLOGICAL MONITORING OF THE SURFACE AND GROUND WATER QUALITY
- LOCAL RESTRICTIONS TO PREVENT ANY FURTHER DRINKING WATER WELLS IN THE CONTAMINATED AREAS OF THE AQUIFER
 
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