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Record of Decision System (RODS)

STRASBURG LANDFILL

Abstract

Site Name:  STRASBURG LANDFILL
Address:  STRASBURG ROAD 
City & State:  NEWLIN TOWNSHIP  PA  19320
County:  CHESTER
 
EPA ID:  PAD000441337
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-92/143
ROD Date:  03/31/1992
Operable Unit(s):  01
 
Media:  Soil, Debris, Air
 
Contaminant:  VOCs
 
Abstract:  SITE HISTORY/DESCRIPTION: The 22-acre Strasburg Landfill site is an inactive landfill located within a 220-acre tract of land in Newlin and West Bradford Townships, Chester County, Pennsylvania. The site is characterized by hills draining toward Brandywine Creek and its floodplain, which form the southern and western site boundaries. The nearest wetland is the Briar Run watershed, located 600 feet east/southeast of the site. Land use in the area is primarily suburban residential, with some residual agricultural areas. The 201 single-family residences that surround the site use ground water as a drinking water source. Prior to 1973, the site was used as farmland. Landfilling permits were granted, and from 1979 to 1983, the landfill accepted more than 3 million cubic yards of industrial and heavy metals waste and sewage treatment plant sludge, including over 1,000 cubic yards of polyvinyl chloride (PVC). In 1979, state investigations determined that landfill operations had resulted in excessive siltation of Briar Run, and in 1980, the state permanently prohibited the landfill from receiving additional industrial waste. In 1983, after the owners were cited for failure to correct onsite violations, the state ordered the landfill closed. As a result of improper landfill closure efforts, over 15 leachate seeps have increased cap erosion and flowed into adjacent ground water and surface water, including Briar Creek. In 1983, state studies detected VOCs and organics in both onsite monitoring wells and offsite residential wells. The state initiated an interim action to control the leachate flow in which surface water runoff and leachate were directed into unlined sediment ponds. A 1989 ROD, OU1, addressed contaminated residential wells and exposure pathways, and provided an interim remedy to limit site access. A 1991 ROD addressed site access and security, and provided for the construction of a security fence and additional warning signs, as OU2. This ROD addresses OU3, the landfill surface, including the integrity of the cap, nearby surface streams, air in and around the landfill, the surficial aquifer, and protection of ground water from further contamination. Ground water remediation will be addressed in a subsequent ROD. The primary contaminants of concern affecting the soil, debris, and air are VOCs, including benzene, TCE, toluene, and xylenes. PERFORMANCE STANDARDS OR GOALS: Site-specific clean-up goals will meet state and closure ARARs. INSTITUTIONAL CONTROLS: Not provided.
 
Remedy:  SELECTED REMEDIAL ACTION: The selected remedial action for this site includes excavating and removing the existing landfill cover, regrading the slopes of the landfill to conform with the PA and RCRA performance requirements, and replacing the existing landfill cap with a multi-layer cap; installing a gas venting system to operate as either an active or passive system, depending upon the measured gas emissions; installing a leachate collection trench around the eastern, southern, and western perimeters of the landfill to collect leachate migratinginto the surfical aquifer; treating the leachate using a UV/ozone treatment system, based on the results of a pilot test, followed by onsite discharge to an onsite surface stream; monitoring ground water and air; and implementing site access restrictions. The estimated present worth cost for this remedial action ranges from $10,397,070 to $11,306,460, which includes an annual O&M cost of $312,471 for 30 years.
 
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