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Record of Decision System (RODS)

GALESBURG/KOPPERS CO.

Abstract

Site Name:  GALESBURG/KOPPERS CO.
Address:  HWY 41S PO BOX 1191 
City & State:  GALESBURG  IL  60401
County:  KNOX
 
EPA ID:  ILD990817991
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-89/090
ROD Date:  06/28/1989
Operable Unit(s):  01
 
Media:  SOIL GROUNDWATER
 
Contaminant:  ORGANICS, PAHS, PCP, PHENOLS
 
Abstract:  THE GALESBURG/KOPPERS SITE IS A 105-ACRE AREA LOCATED APPROXIMATELY TWO MILES SOUTH OF THE CITY OF GALESBURG IN KNOX COUNTY, ILLINOIS. THE LAND SURROUNDING THE SITE IS SPARSELY POPULATED WITH THE BURLINGTON NORTHERN RAILROAD YARD TO THE NORTH, A LANDFILL TO THE EAST, AND FOUR RESIDENCES AND A LUMBER YARD TO THE SOUTH AND WEST. FARMLAND ABUTS THESE AREAS. BURLINGTON NORTHERN RAILROAD COMPANY OPERATED THE SITE AS A RAILROAD TIE TREATING PLANT FROM 1907 TO DECEMBER 1966. IN 1966 THE KOPPERS COMPANY, INC. LEASED THE PRODUCTION PLANT FROM BURLINGTON NORTHERN AND RESUMED OPERATION OF THE FACILITY. TREATMENT OPERATIONS CONSISTED OF PRESSURE TREATMENT OF THE RAILROAD TIES USING A MIXTURE OF CREOSOTE AND COAL TAR OR CREOSOTE AND FUEL OIL. FROM 1971 TO 1976 PENTACHLOROPHENOL (PCP) WAS USED IN THE TREATMENT PROCESS. KEY CONTAMINATED AREAS AT THE SITE INCLUDE A SLURRY POND, A NORTHERN AND SOUTHERN CREOSOTE LAGOON, A PCP-CONTAMINATED LAGOON, A WASTE PILE STORAGE AREA, TWO BACKFILLED DRAINAGE DITCHES, AND TWO FORMER SPRAY WASTEWATER FIELDS. CONTAMINATION HAS BEEN FOUND IN SOIL, GROUND WATER, SURFACE WATER, AND ON AND OFFSITE SEDIMENT. THIS RECORD OF DECISION (ROD) ADDRESSES ALL CONTAMINATED MEDIA. THESE ACTIONS, IN COMBINATION WITH REMEDIAL ACTIONS AT THE STEAGALL LANDFILL SITE, ARE INTENDED TO ELIMINATE OFFSITE SURFACE WATER AND SEDIMENT CONTAMINATION AS WELL. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SOIL AND GROUND WATER ARE ORGANICS INCLUDING PCP, PHENOLS, AND PAHS.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES EXCAVATION AND ONSITE CONSOLIDATION OF APPROXIMATELY 15,200 YD3 OF CONTAMINATED SOIL WITH ONSITE BIOLOGICAL TREATMENT OF SOIL AND IMPLEMENTATION OF A BIOLOGICAL MONITORING PROGRAM; CONSTRUCTION OF SHALLOW GROUND WATER INTERCEPTOR TRENCHES AND DEEP PUMPING WELLS WITH PUMPING AND ONSITE PRETREATMENT OF SHALLOW AND DEEP GROUND WATER USING AN EXISTING WASTEWATER TREATMENT SYSTEM TO ACHIEVE CLEANUP OBJECTIVES, DISCHARGING TREATED GROUND WATER TO A PUBLICLY-OWNED TREATMENT WORKS (POTW) FOR FINAL TREATMENT OR ONSITE TREATMENT SHOULD THE POTW PRETREATMENT STANDARDS NOT BE ACHIEVED; GROUND WATER MONITORING; AND IMPLEMENTION OF ACCESS AND LAND USE RESTRICTIONS. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $4,286,844, WHICH INCLUDES AN ESTIMATED ANNUAL O&M OF $170,012.
 
Remedy:  THE FINAL REMEDY AT THE KOPPER'S WOOD-TREATING FACILITY IN GALESBURG, ILLINOIS CONSISTS OF THE FOLLOWING:
* EXCAVATION OF VISIBLY CONTAMINATED SOILS PLUS A SIX-INCH BUFFER LAYER TO A DEPTH THAT ENSURES EFFECTIVE MITIGATION OF GROUNDWATER CONTAMINATION FROM "HOTSPOTS" IDENTIFIED ON-SITE (NORTH CREOSOTE LAGOON, DRIP TRACK, NORTHEAST PORTION OF PENTACHLOROPHENOL (PCP) LAGOON AND AREA EAST OF THE RETORT BUILDING), SAMPLES WILL BE TAKEN TO ASSESS THESE MITIGATIVE EFFORTS AND TO CONFIRM FINAL REMEDIATION TO HEALTH-BASED LEVELS; BACKFILLING OF EXCAVATED AREAS WITH "CLEAN" SOIL, REGRADING OF THE "AREA OF CONTAMINATION" FOR POSITIVE SURFACE DRAINAGE; REVEGETATION AND MAINTENANCE OF THE AFFECTED AREAS.

* CONDUCT AN ON-SITE FIELD SCALE BIOLOGICAL TREATMENT DEMONSTRATION STUDY WITH A BIOLOGICAL MONITORING PROGRAM. UPON SUCCESSFUL DEMONSTRATION OF TECHNOLOGY, CONSOLIDATION OF EXCAVATED CONTAMINATED SOILS INTO A FULL SCALE CELL THROUGH A PHASED LOADING APPROACH. UPON TREATMENT OF THE FINAL LIFT OF CONTAMINATED SOIL, IMPLEMENTATION AND MAINTENANCE OF MANAGEMENT MEASURES AS NECESSARY.

* CONSTRUCTION AND OPERATION OF A SYSTEM OF SHALLOW INTERCEPTOR TRENCHES AND DEEPER PUMPING WELLS TO CONTAIN AND EXTRACT CONTAMINATED GROUNDWATER FROM THE SITE. EXTRACTION WILL CONTINUE UNTIL ESTABLISHED IN-SITU GROUNDWATER CLEAN-UP OBJECTIVES ARE MET. EXTRACTED GROUNDWATER WILL BE PRETREATED IN THE EXISTING WOOD-TREATING FACILITY WASTE WATER SYSTEM AS NECESSARY PRIOR TO CONVEYANCE TO THE GALESBURG SANITARY DISTRICT PUBLICALLY OWNED TREATMENT WORKS (POTW) FOR FINAL TREATMENT. TREATED GROUNDWATER WILL MEET ESTABLISHED CLEAN-UP OBJECTIVES FOR SURFACE WATER DISCHARGE PRIOR TO RELEASE BY THE POTW. MAINTENANCE OF THE GROUNDWATER REMEDIAL SYSTEM; DEVELOPMENT AND IMPLEMENTATION OF CONTINGENCY PLANS FOR ALTERNATIVE ON-SITE TREATMENT SHOULD THE POTW BE UNABLE TO ACCEPT SITE WASTE WATER IN THE FUTURE.

* MONITORING OF GROUNDWATER WITHIN, AND AT THE PERIMETER, OF THE "AREA OF CONTAMINATION" TO ASSESS THE EFFECTIVENESS OF THE GROUNDWATER REMEDY; DEVELOPMENT AND IMPLEMENTATION OF CONTINGENCY PLANS FOR COLLECTION OF CONTAMINATED GROUNDWATER AS NECESSARY. DIRECT MONITORING OF EXTRACTED AND PRETREATED GROUNDWATER PRIOR TO RELEASE TO THE POTW FOR QUALITY COMPLIANCE PURPOSES.

* APPLICATION AND ENFORCEMENT OF ACCESS AND LAND USE RESTRICTIONS FOR THE "AREA OF CONTAMINATION" IN ACCORDANCE WITH THE TERMS OF THE ANTICIPATED CONSENT DECREE WITH THE RESPONSIBLE PARTIES (RPS).
 
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