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Record of Decision System (RODS)

HELLERTOWN MANUFACTURING CO.

Abstract

Site Name:  HELLERTOWN MANUFACTURING CO.
Address:  1770 MAIN ST 
City & State:  HELLERTOWN  PA  18055
County:  NORTHAMPTON
 
EPA ID:  PAD002390748
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-91/123
ROD Date:  09/30/1991
Operable Unit(s):  01
 
Media:  SOIL GROUNDWATER
 
Contaminant:  VOCS, BENZENE, DCE, PCE, TCE, VINYL CHLORIDE, XYLENES, OTHER ORGANICS, PAHS, METALS, CHROMIUM
 
Abstract:  THE 8.64-ACRE HELLERTOWN MANUFACTURING SITE IS AN INACTIVE SPARK PLUG MANUFACTURING FACILITY IN NORTHAMPTON COUNTY, PENNSYLVANIA, APPROXIMATELY 1.5 MILES SOUTH OF BETHLEHEM. THE SITE IS BORDERED BY COMMERCIAL AND RESIDENTIAL AREAS, HIGHWAY AND RAILROAD TRANSPORTATION CORRIDORS, SAUCON CREEK, AND A WETLANDS AREA. ONSITE FEATURES INCLUDE A 124,000-SQUARE-FOOT BUILDING, AND FIVE LAGOONS TOTALING 500,000 CUBIC FEET. FROM 1930 TO 1975, CHEMICAL WASTES INCLUDING TCE, ZINC PLATING WASTE, CHROME DIP WASTE, CLEANERS, AND CUTTING OILS GENERATED DURING PLATING AND DEGREASING PROCESSES WERE DISPOSED OF ONSITE IN THE UNLINED LAGOONS. WASTE FROM THESE ACTIVITIES THEN SEEPED INTO THE LOCAL SOIL AND ROCK STRATA. IN 1976, AFTER THE FACILITY BEGAN DISCHARGING TREATED WASTEWATER INTO THE MUNICIPAL SEWER SYSTEM, THE LAGOONS WERE BACKFILLED, CLOSED IN PLACE, AND COVERED WITH TOPSOIL. THE MATERIAL USED TO BACKFILL THE LAGOONS INCLUDED REJECTED SPARK PLUGS, DEMOLITION MATERIAL FROM ROAD-BUILDING ACTIVITIES, AND SOIL EXCAVATED DURING CONSTRUCTION OF THE NEARBY BETHLEHEM WASTEWATER TREATMENT PLANT. STUDIES CONDUCTED IN 1990 IDENTIFIED CONTAMINATION BY VOCS, METALS, AND ORGANIC COMPOUNDS IN LAGOON BACKFILL, SOIL, AND IN ONSITE GROUND WATER. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SOIL AND GROUND WATER AND VOCS INCLUDING BENZENE, DCE, PCE, TCE, VINYL CHLORIDE, AND XYLENES; OTHER ORGANICS INCLUDING PAHS; AND METALS INCLUDING CHROMIUM.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES CAPPING THE FORMER 3.5-ACRE LAGOON AREA WITH AN IMPERMEABLE ASPHALT AND CLAY COVER; PUMPING AND ONSITE TREATMENT OF GROUND WATER USING AIR STRIPPING; REMOVING SOLIDS USING A SETTLING TANK OR CLARIFIER FOLLOWED BY FILTRATION; DISCHARGING THE TREATED EFFLUENT ONSITE TO SAUCON CREEK; LONG-TERM GROUND WATER MONITORING; CONTROLLING SURFACE WATER RUNOFF; AND IMPLEMENTING INSTITUTIONAL CONTROLS INCLUDING DEED RESTRICTIONS. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $2,250,000.

PERFORMANCE STANDARDS OR GOALS; GROUND WATER CLEAN-UP GOALS ARE BASED ON SDWA MCLS OR STATE BACKGROUND CONCENTRATIONS, WHICHEVER IS THE MORE STRINGENT. CHEMICAL-SPECIFIC GROUND WATER CLEAN-UP LEVELS INCLUDE BENZENE 0.2 UG/L (STATE BACKGROUND), PCE 0.03 UG/L (STATE BACKGROUND), TCE 0.12 UG/L (STATE BACKGROUND), AND VINYL CHLORIDE 0.18 UG/L (STATE BACKGROUND).
 
Remedy:  THIS IS THE ONLY PLANNED RESPONSE ACTION FOR THE SITE. THIS REMEDY ADDRESSES BOTH SOURCE CONTROL OF FIVE FORMER LAGOONS WHICH ARE THE SOURCE OF THE SOIL AND GROUNDWATER CONTAMINATION, AND GROUNDWATER REMEDIATION. GROUNDWATER CONTAMINATION REPRESENTS A PRIMARY THREAT; THEREFORE, THE EXTRACTION AND TREATMENT OF GROUNDWATER WILL BE REQUIRED. SOILS ON-SITE REPRESENT A LOW-LEVEL THREAT AND NOT A PRINCIPAL THREAT; THEREFORE, A CONTAINMENT REMEDY FOR SOURCE CONTROL WILL BE REQUIRED.

THE SELECTED REMEDY INCLUDES THE FOLLOWING MAJOR COMPONENTS;
* PLACEMENT OF AN IMPERMEABLE COVER OVER THE ENTIRE FORMER LAGOON AREA;
* SURFACE WATER RUNOFF CONTROLS;
* EXTRACTION AND TREATMENT OF GROUNDWATER (AIR STRIPPING AND SOLIDS REMOVAL), WITH DISCHARGE TO SAUCON CREEK;
* LONG-TERM GROUNDWATER MONITORING; AND
* DEED RESTRICTIONS.
 
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