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Record of Decision System (RODS)

COSHOCTON LANDFILL

Abstract

Site Name:  COSHOCTON LANDFILL
Address:  ST RTE 83 
City & State:  FRANKLIN TOWNSHIP  OH  43812
County:  COSHOCTON
 
EPA ID:  OHD980509830
EPA Region:  05
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-88/067
ROD Date:  06/17/1988
Operable Unit(s):  01
 
Media:  GROUNDWATER SURFACEWATER
 
Contaminant:  METALS, ARSENIC, ORGANICS, PAHS, VTOCS, TCE
 
Abstract:  THE COSHOCTON CITY LANDFILL (CCL), AN 80-ACRE LANDFILL, IS LOCATED IN FRANKLIN TOWNSHIP, COSHOCTON COUNTY, OHIO. THE LANDFILL IS BUILT ON ABANDONED, SUBSURFACE STRIP MINES, WHERE AN EXTENSIVE NETWORK OF MINE SHAFTS WERE DEVELOPED. CCL IS LOCATED BETWEEN TWO SMALL INTERMITTENT CREEKS THAT DRAIN TOWARD THE MUSKINGUM RIVER, 1.5 MILES TO THE WEST OF THE SITE. THE AREA IS CHARACTERIZED BY CONSIDERABLE TOPOGRAPHIC RELIEF, WITH SMALL STREAMS SITUATED BETWEEN STEEP ROLLING HILLS. MOST OF THE SURROUNDING LAND IS EITHER WOODLANDS OR PASTURE LAND USED FOR CATTLE GRAZING. THE LANDFILL PROPERTY WAS USED IN THE EARLY 1900S, AND AGAIN FROM THE MID-1950S UNTIL MID-1979, FOR SUBSURFACE SHAFT MINING OF COAL. THE CITY CONDUCTED LANDFILL OPERATIONS AT THE SITE BETWEEN 1968 AND 1979; HOWEVER, THE OPERATIONS WERE NOT WELL RECORDED. THE WASTE RECEIVED AT THE LANDFILL CONSISTED OF MIXED MUNICIPAL REFUSE AND INDUSTRIAL WASTES INCLUDING RELATIVELY INERT SOLID SCRAP WASTES, NONHAZARDOUS MATERIALS, AND HAZARDOUS LIQUID WASTE TYPES SUCH AS SPENT CHLORINATED SOLVENTS, NON-CHLORINATED FLAMMABLE SOLVENTS, RESINS, AND PRASTICIZERS. MUCH OF THE LAND-FILLED WASTE IS SITUATED IN THE VOID CREATED BY ABANDONED STRIP MINE OPERATIONS. SOME WASTE WAS ALSO REPORTEDLY PLACED IN SHALLOW EXCAVATIONS IN THE SOUTHERN PORTIONS OF THE SITE. CURRENTLY, PORTIONS OF THE LANDFILL SITE ARE COVERED WITH WHAT APPEARS TO BE MINE SPOIL MATERIALS. THE COVER ON THE SITE HOWEVER IS, NOT CONSISTENT, WITH LITTLE OR NO COVER IN SOME AREAS. IN ADDITION, STANDING WATER IS OBSERVED IN SEVERAL AREAS. SCATTERED SURFACE DEPOSITS OF DRUMS AND OTHER METAL OBJECTS ARE PRESENT AT THE SITE. NUMEROUS LEACHATE SEEPS EXIST ON PORTIONS OF THE LANDFILL. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SURFACE AND GROUND WATER AT THIS SITE INCLUDE; CARBON DISULFIDE, TCE, PAHS, CHLORINATED AND NON-CHLORINATED SOLVENTS, AND HEAVY METALS (MOSTLY ARSENIC).

THE SELECTED REMEDIAL ACTION FOR THIS LANDFILL INCLUDES; INSTALLATION OF A 2-FOOT LOW PERMEABILITY SOIL CAP OVER THE LANDFILL, WITH TOP SOIL AND VEGETATION; IMPOSITION OF DEED RESTRICTIONS, INCLUDING FENCING; FILLING AND GRADING THE NECESSARY AREAS; AND POSSIBLE INSTALLATION OF A GAS COLLECTION AND VENTING SYSTEM, AS WELL AS A LEACHATE COLLECTION SYSTEM AND A DRAINAGE LAYER. THIS REMEDIAL ACTION WILL ALSO INCLUDE ROUTINE GROUND AND SURFACE WATER AND SEDIMENT MONITORING TO IDENTIFY CHANGES IN CONTAMINATION CONCENTRATIONS. THE IMPLEMENTATION OF THIS REMEDIAL ACTION WILL ENTAIL A CAPITAL INVESTMENT OF $8,010,000 WITH A PRESENT VALUE OF O&M COST OF $910,000 ASSOCIATED WITH THE REMEDY.
 
Remedy:  THE SELECTED REMEDIAL ALTERNATIVE FOR THE COSHOCTON CITY LANDFILL SITE IS TO COVER THE LANDFILL WITH A LOW PERMEABILITY CAP AND UNDERTAKE OTHER ACTIONS REQUIRED BY STATE SANITARY LANDFILL CLOSURE REQUIREMENTS. THE MAJOR COMPONENTS OF THE SELECTED REMEDIAL ALTERNATIVE ARE;
- COMPLETE SITE FENCING AND POSTING
- THE RECORDATION OF NOTICE IN THE CHAIN OF TITLE REGARDING USES TO WHICH THE PROPERTY HAS BEEN PUT, AND ANY RESTRICTIONS ON ITS FUTURE USE, REFERRED TO HEREIN AS "DEED RESTRICTIONS"
- SITE GRADING TO PROMOTE PRECIPITATION RUNOFF AND REDUCE INFILTRATION
- SITE CAPPING WHICH MEETS STATE SOLID WASTE LANDFILL REQUIREMENTS AND WHICH MINIMIZES LEACHATE GENERATION AND PREVENTS DIRECT CONTACT WITH CONTAMINATED MATERIALS
- TOP COVER OF TOPSOIL AND REVEGATATION
- SITE MONITORING INCLUDING GROUNDWATER MONITORING, SURFACE WATER MONITORING AND LANDFILL GAS MONITORING TO DETERMINE THE EFFECTIVENESS OF ABOVE MEASURES AND TO PROVIDE EARLY ALERT AS TO THE NEED FOR OTHER ACTIONS THE FOLLOWING COMPONENTS WILL BE EVALUATED DURING THE REMEDIAL DESIGN (RD) AND WILL BE INCLUDED IF NECESSARY;
- LANDFILL GAS COLLECTION AND VENTING SYSTEM
- LEACHATE AND GROUNDWATER COLLECTION AND ON-SITE STORAGE SYSTEM WITH FACILITIES FOR TRUCK LOADING
- PROVISIONS FOR ON-SITE OR OFF-SITE TREATMENT AND DISPOSAL OF COLLECTED LEACHATE AND GROUNDWATER AT A LOCAL POTW (THE COSHOCTON POTW WAS USED FOR EVALUATION AND COST ESTIMATION) CONSISTENT WITH THE COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION AND LIABILITY ACT OF 1980 (CERCLA), AS AMENDED BY THE SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT OF 1986 (SARA), AND THE NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION CONTINGENCY PLAN (NCP), 40 C.F.R. PART 300, I HAVE DETERMINED THAT, AT THE COSHOCTON CITY LANDFILL SITE, THE SELECTED REMEDIAL ALTERNATIVE IS COST-EFFECTIVE, PROVIDES ADEQUATE PROTECTION OF PUBLIC HEALTH, WELFARE AND THE ENVIRONMENT, AND UTILIZES TREATMENT TO THE MAXIMUM EXTENT PRACTICABLE. THE ACTION WILL REQUIRE OPERATION AND MAINTENANCE ACTIVITIES TO ENSURE CONTINUED EFFECTIVENESS OF THE REMEDIAL ALTERNATIVE AS WELL AS TO ENSURE THAT THE PERFORMANCE MEETS APPLICABLE STATE AND FEDERAL SURFACE AND GROUND-WATER CRITERIA. I HAVE DETERMINED THAT THE ACTION BEING TAKEN IS CONSISTENT WITH SECTION 121 OF SARA. THE STATE OF OHIO HAS BEEN CONSULTED AND CONCURS WITH THE SELECTED REMEDY.
 
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