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Record of Decision System (RODS)

JANESVILLE OLD LANDFILL

Abstract

Site Name:  JANESVILLE OLD LANDFILL
Address:  BLACKBRIDGE ROAD 
City & State:  JANESVILLE  WI  53545
County:  ROCK
 
EPA ID:  WID980614044
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-90/120
ROD Date:  12/29/1989
Operable Unit(s):  01
 
Media:  GROUND WATER AIR
 
Contaminant:  VOCS, BENZENE, PCE, TCE, METALS, ARSENIC
 
Abstract:  THE JANESVILLE OLD LANDFILL SITE IS BEING REMEDIATED CONCURRENTLY WITH THE JANESVILLE ASH BEDS SITE AND TWO NEARBY, NON-NPL SITES, THE JANESVILLE OLD DUMP AND THE JANESVILLE NEW LANDFILL SITES. THESE FOUR SITES COMPRISE THE 65-ACRE JANESVILLE DISPOSAL FACILITY (JDF) IN JANESVILLE, WISCONSIN. THE 18-ACRE JANESVILLE OLD LANDFILL SITE WAS OPERATED FROM 1963 TO 1978, ACCEPTING BOTH MUNICIPAL AND INDUSTRIAL WASTES. THE SITE WAS CAPPED WITH SILTY SAND AND SANDY CLAY AT THE TIME OF CLOSURE IN 1978, BUT WAS SUBSEQUENTLY SHOWN TO BE CONTRIBUTING TO AIR AND GROUND WATER CONTAMINATION. THE SECOND NPL SITE, JANESVILLE ASH BEDS (JAB) SITE, WAS OPERATED FROM 1974 TO 1985 AND CONSISTED OF FIVE ASH BEDS IN WHICH INDUSTRIAL LIQUIDS AND SLUDGES WERE DEPOSITED AND ALLOWED TO EVAPORATE OR DRY. ALTHOUGH THE JAB SITE WAS EXCAVATED, CLOSED AND CAPPED WITH CLAY, IT IS A SOURCE OF GROUND WATER CONTAMINATION AND POSSIBLY SURFACE WATER CONTAMINATION IN THE NEARBY ROCK RIVER. TWO OTHER CONTINGENT SITES ARE ALSO INCLUDED AS PART OF THIS REMEDY BECAUSE OF THEIR PROXIMITY TO THE TWO NPL SITES. A 1986 CONSENT ORDER AUTHORIZED THAT THE FOUR SITES COMPRISING THE JDF WOULD BE ADDRESSED IN ONE REMEDIAL INVESTIGATION UNDER THE JOINT AUTHORITY OF CERCLA AND RCRA. THE 16-ACRE JANESVILLE NEW LANDFILL SITE WAS OPERATED FROM 1978 TO 1985 AND ACCEPTED MUNICIPAL AND INDUSTRIAL WASTES. THE SITE IS ALSO A POSSIBLE SOURCE OF AIR AND GROUND WATER CONTAMINATION. THE SECOND ADDITIONAL SITE IS THE 15-ACRE JANESVILLE OLD DUMP SITE WHICH WAS OPERATED FROM 1950 TO 1963 AS A GENERAL REFUSE DUMP, ACCEPTING UNKNOWN TYPES OF WASTE. THIS SITE DOES NOT SIGNIFICANTLY CONTAMINATE THE JDF AREA. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE GROUND WATER AND AIR ARE VOCS INCLUDING BENZENE, PCE, AND TCE; AND METALS INCLUDING ARSENIC.

REMEDIAL ACTIVITIES AT THE JDF SITE WILL BE IMPLEMENTED AT THREE OF THE SITES AND INCLUDE TREATING THE LANDFILL GAS BY EXTRACTION AND FLARING, UPGRADING THE LANDFILL CAP, AND AIR MONITORING AT THE OLD LANDFILL SITE; UPGRADING THE LANDFILL CAP, AND PROVIDING SITE DRAINAGE AS NEEDED, AT THE JAB SITE; AND TREATING THE LANDFILL GAS BY EXTRACTION AND FLARING, UPGRADING THE LANDFILL CAP, IMPROVING THE LEACHATE COLLECTION SYSTEM, AND AIR MONITORING AT THE NEW LANDFILL SITE. NO FURTHER ACTION WILL BE IMPLEMENTED AT THE JANESVILLE OLD DUMP SITE. OVERALL, CONTAMINATED GROUND WATER AT THE JDF SITE WILL BE PUMPED AND TREATED ONSITE BY AIR STRIPPING, WITH DISCHARGE TO ROCK RIVER, IN CONJUNCTION WITH GROUND WATER MONITORING. GROUND WATER AND LAND USE AND DEED RESTRICTIONS WILL BE IMPLEMENTED AT EACH SITE. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $12,328,000, WHICH INCLUDES AN ANNUAL O&M COST RANGING FROM $163,600 TO $408,100.

PERFORMANCE STANDARDS OR GOALS: GROUND WATER WILL BE TREATED TO ATTAIN FEDERAL MCLS OR STATE STANDARDS. SURFACE WATER WILL MEET STATE SURFACE WATER QUALITY STANDARDS. CHEMICAL-SPECIFIC CLEANUP GOALS WERE NOT PROVIDED.
 
Remedy:  THE SELECTED REMEDY ADDRESSES THE FINAL REMEDY FOR ALL FOUR SITES INDIVIDUALLY; BUT THIS ROD TREATS THE FOUR SITES AS ONE SITE, THE JANESVILLE DISPOSAL FACILITY (JDF). THE SELECTED REMEDIES FOR THE JDF ARE AS FOLLOWS;

JANESVILLE ASHBEDS OR JAB; ACCESS/LAND USE RESTRICTIONS, CONTAINMENT OF SUBSURFACE SOILS BY MAINTAINING THE PRESENT CAP AND UPGRADING THE PRESENT CAP AND SITE DRAINAGE AS NEEDED. RCRA REQUIRMENTS, SUCH AS GROUNDWATER MONITORING, WILL CONTINUE. THE ASH PILE TO THE SOUTH OF THE JAB WILL BE REMOVED.

JANESVILLE OLD LANDFILL OR "1978" SITE; ACCESS/LAND USE RESTRICTIONS, RECOVERY AND TREATMENT OF LANDFILL GAS BY MEANS OF EXTRACTION AND FLARING (THE PRPS HAVE THE OPTION TO TEST OUT OF THE LANDFILL GAS EXTRACTION AND TREATMENT BY FOLLOWING WISCONSIN'S HAZARDOUS AIR CONTAMINATION TEST OUT PROCEDURES AND BY DEMONSTRATING THAT THE MIGRATION OF EXPLOSIVE GASES HAS BEEN PREVENTED), THE UPGRADING OF THE LANDFILL CAP TO MEET THE STANDARDS SET BY WISCONSIN ADMINISTRATIVE CODE (WAC) NR 504.07, AND THE CONTINUED MONITORING OF THE GROUNDWATER AND AIR.

JANESVILLE NEW LANDFILL OR "1985" SITE; ACCESS/LAND USE RESTRICTIONS, RECOVERY AND TREATMENT OF LANDFILL GAS BY MEANS OF EXTRACTION AND FLARING (THE "1985" SYSTEM SHOULD BE CONNECTED TO THE SYSTEM INSTALLED AT THE "1978" SITE, IF THE PRPS DO NOT TEST OUT OF THE SYSTEM AT THE "1978" SITE, AND BOTH SHOULD BE ABLE TO BE POSSIBLY UPGRADED TO AN ENERGY CONVERSION SYSTEM), THE UPGRADING OF THE CAP TO MEET THE STANDARDS SET BY WAC NR 504.07 (THE PRPS WERE ABLE TO SHOW THAT THE WAC NR 504.07 CAP, ALONG WITH THE REPAIRS/IMPROVEMENTS TO THE LEACHATE COLLECTION SYSTEM AND THE INSTALLATION OF THE LANDFILL GAS EXTRACTION AND TREATMENT SYSTEM, WILL MEET OR EXCEED THE PERFORMANCE STANDARDS OF RCRA SUBTITLE C/WAC NR 181.44(13)), AND THE CONTINUED MONITORING OF THE GROUNDWATER AND AIR, ALONG WITH THE IMPROVING OF THE LEACHATE COLLECTION SYSTEM. THE CAP OF THE "1985" SITE SHALL BE TIED INTO THE CAP OF THE "1978" SITE.

JANESVILLE OLD DUMP OR "1963" SITE; THE NO ACTION ALTERNATIVE WAS CHOSEN FOR THIS PORTION OF THE JDF, BUT ACCESS/LAND USE RESTRICTIONS (TIED IN WITH THE RESTRICTIONS SELECTED FOR THE JAB SITE) AND GROUNDWATER MONITORING WILL NEED TO BE CONTINUED, ALONG WITH THE OTHER SITES WITHIN JDF.

OVERALL JDF GROUNDWATER CONTAMINATION; GROUNDWATER USE RESTRICTIONS FOR THE ENTIRE JDF AREA AND THE EXTRACTION AND ON-SITE TREATMENT OF THE GROUNDWATER WITH THE EXTRACTION WELLS PLACED BETWEEN THE JDF AND THE ROCK RIVER. THE GROUNDWATER WILL NEED TO BE EXTRACTED AND TREATED, AS LONG AS THE GROUNDWATER DOWNGRADIENT OF JDF CONTAINS CONTAMINANTS THAT EXCEED THE WAC NR 140 STANDARDS. THE GROUNDWATER EXTRACTION AND TREATMENT SYSTEM MAY BE COMBINED WITH THE SYSTEM THAT MAY BE IMPLEMENTED BY PARKER PEN CO., LOCATED IMMEDIATELY DOWNGRADIENT OF JDF, TO ADDRESS GROUNDWATER CONTAMINATION PROBLEMS AT THEIR FACILITY. THE TREATED GROUNDWATER WOULD BE DISCHARGED TO THE ROCK RIVER, AND MUST MEET AMBIENT SURFACE WATER QUALITY STANDARDS PRIOR TO DISCHARGE.
 
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