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Record of Decision System (RODS)

LORD-SHOPE LANDFILL

Abstract

Site Name:  LORD-SHOPE LANDFILL
Address:  RD #1 PIEPER ROAD 
City & State:  GIRARD TOWNSHIP  PA  16417
County:  ERIE
 
EPA ID:  PAD980508931
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-90/090
ROD Date:  06/29/1990
Operable Unit(s):  01
 
Media:  SOIL GROUNDWATER
 
Contaminant:  VOCS, BENZENE, PCE, TCE, METALS, ARSENIC, CHROMIUM, LEAD
 
Abstract:  THE 25-ACRE LORD-SHOPE LANDFILL SITE IS AN INACTIVE HAZARDOUS WASTE LANDFILL IN GIRARD TOWNSHIP, ERIE COUNTY, NORTHWESTERN PENNSYLVANIA. THE SITE CONSISTS OF A 4-ACRE LANDFILL AND ADJACENT AREAS OF CONTAMINATED SOIL, SURFACE WATER AND GROUND WATER. THE SURROUNDING AREA IS PRIMARILY AGRICULTURAL AND RESIDENTIAL, WITH TWO UNNAMED TRIBUTARIES OF ELK CREEK BORDERING THE SITE TO THE NORTH AND WEST. FROM THE MID-1950S TO 1979, INDUSTRIAL WASTES, INCLUDING SPENT ADHESIVES, DEGREASING SOLVENTS, ACIDS, CAUSTICS, AND SOME DRUMMED WASTES WERE DISPOSED OF ONSITE FROM NEARBY FACILITIES. DURING 1982 AND 1983, RESPONSIBLE PARTIES, UNDER AN AGREEMENT WITH THE STATE, IMPLEMENTED A REMEDIAL ALTERNATIVE, WHICH INCLUDED REMOVING 81 EXPOSED DRUMS, CAPPING THE LANDFILL, AND INSTALLING A LOW PERMEABILITY GROUND WATER CUTOFF WALL TO REDUCE LEACHATE PRODUCTION FROM THE LANDFILL AND TO DIVERT GROUND WATER FLOW AROUND THE SITE. LANDFILL LEACHATE HAS, HOWEVER, RESULTED IN VOC AND INORGANIC GROUND WATER CONTAMINATION BOTH BENEATH AND TO THE NORTH OF THE LANDFILL, WITH A CONTAMINANT PLUME MIGRATING TOWARDS THE NORTH. SURFACE SOIL AROUND THE LANDFILL HAS ALSO BEEN FOUND TO CONTAIN ELEVATED LEVELS OF VOCS. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE LANDFILL MATERIAL, SURROUNDING SOIL, AND GROUND WATER ARE VOCS INCLUDING BENZENE, PCE, AND TCE; AND METALS INCLUDING ARSENIC, CHROMIUM, AND LEAD.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES IN-SITU VAPOR STRIPPING USING VACUUM WELLS TO VOLATIZE AND REMOVE VOCS FROM THE LANDFILL MATERIAL AND THE SURROUNDING SOIL; COLLECTION AND TREATMENT OF GAS EMISSIONS GENERATED BY THE VAPOR STRIPPING PROCESS USING CARBON FILTRATION; GROUND WATER PUMPING AND TREATMENT INCLUDING PRETREATMENT FOR METAL REMOVAL, FOLLOWED BY AIR STRIPPING, TO HALT PLUME MIGRATION, WITH FINAL DISCHARGE OF TREATED GROUND WATER INTO THE NEARBY SURFACE TRIBUTARIES; IMPLEMENTATION OF SITE ACCESS RESTRICTIONS AND INSTITUTIONAL CONTROLS INCLUDING GROUND WATER USE RESTRICTIONS. THE ESTIMATED PRESENT WORTH COST FOR THE REMEDIAL ACTION IS $5,760,000, WHICH INCLUDES AN ANNUAL O&M COST OF $420,000 FOR YEARS 1 - 2, AND $310,000 FOR YEARS 3 - 50.

PERFORMANCE STANDARDS OR GOALS: CHEMICAL-SPECIFIC SOIL CRITERIA FOR THE LANDFILL MATERIAL AND THE SURROUNDING SOIL WERE NOT PROVIDED, BUT WILL BE DETERMINED DURING THE REMEDIAL DESIGN AND WILL BE BASED ON SOIL CONTAMINANT LEVELS THAT WILL NOT SIGNIFICANTLY IMPACT THE UNDERLYING GROUND WATER. GROUND WATER CLEANUP GOALS WILL MEET SDWA MCLS OR PROPOSED MCLS (PMCLS), AND A (10-4) EXCESS CANCER RISK OR A HAZARD INDEX EQUALS 1. TARGET GROUND WATER CLEANUP LEVELS INCLUDE PCE 5 UG/L (PMCL), TCE 5 UG/L (MCL), BENZENE 5 UG/L (MCL), ARSENIC 20 UG/L (BASED ON AN EXCESS CANCER RISK OF 10-4), CHROMIUM 50 UG/L (MCL), AND LEAD 15 UG/L (RISK-BASED CALCULATION). GROUND WATER GOALS WILL BE REVISED TO MEET BACKGROUND LEVELS IN ACCORDANCE WITH STATE ARARS. AIR EMISSIONS FROM THE AIR STRIPPING OF THE GROUND WATER TREATMENT SYSTEM AND THE GAS RELEASED FROM THE IN-SITU VAPOR STRIPPING PROCESS WILL BE TREATED TO MEET STATE STANDARDS.
 
Remedy:  THE REMEDIAL ACTION PLAN IN THIS DOCUMENT IS PRESENTED AS THE PERMANENT REMEDY FOR RESOLVING THE GROUNDWATER CONTAMINATION AT THE SITE AND FOR REDUCING THE SOURCE OF CONTAMINATION.

THIS REMEDY IS COMPRISED OF THE FOLLOWING COMPONENTS:

* A GROUNDWATER EXTRACTION AND TREATMENT COMPONENT TO QUICKLY HALT PLUME MIGRATION, WITH THE LONG-TERM EFFECT OF RETURNING THE GROUNDWATER TO ITS MOST BENEFICIAL USE;
* THE INNOVATIVE TECHNOLOGY OF IN SITU VAPOR STRIPPING THAT USES VACUUM WELLS TO VOLATILIZE AND REMOVE VOLATILE ORGANIC COMPOUNDS FROM THE LANDFILL MATERIALS AND SURROUNDING SOILS; AND
* THE ADDITIONAL PROTECTION PROVIDED BY INSTITUTIONAL CONTROLS TO RESTRICT THE USE OF CONTAMINATED GROUNDWATER AND THE INSTALLATION OF SECURITY FENCING AROUND THE PROPERTY TO PREVENT DIRECT HUMAN CONTACT WITH CONTAMINANTS AT THE SITE.
 
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