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Record of Decision System (RODS)

LIPARI LANDFILL

Abstract

Site Name:  LIPARI LANDFILL
Address:  RT 322 
City & State:  PITMAN  NJ  08071
County:  GLOUCESTER
 
EPA ID:  NJD980505416
EPA Region:  02
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R02-85/023
ROD Date:  09/30/1985
Operable Unit(s):  02
 
Media:  GROUNDWATER SOIL
 
Contaminant:  ARSENIC, CHROMIUM, HEAVY METALS, ORGANICS, PHENOLS, TOLUENE
 
Abstract:  THE LIPARI LANDFILL SITE IS LOCATED IN MANTUA TOWNSHIP, GLOUCESTER COUNTY, NEW JERSEY AND IS ADJACENT TO THE TOWNS OF PITMAN AND GLASSBORO. THE SITE IS APPROXIMATELY FIFTEEN ACRES IN SIZE; SIX ACRES OF WHICH WERE USED FOR HAZARDOUS WASTE LANDFILLING ACTIVITIES. TRENCHES EXCAVATED FOR SAND AND GRAVEL WERE BACKFILLED WITH MUNICIPAL REFUSE, HOUSEHOLD WASTES, LIQUID AND SEMI-SOLID CHEMICAL WASTES, AND OTHER INDUSTRIAL WASTES. ALTHOUGH NO DETAILED RECORDS WERE KEPT, IT HAS BEEN ESTIMATED THAT 12,000 CUBIC YARDS OF SOLID WASTES AND 2.9 MILLION MILLION GALLONS OF LIQUID WASTES WERE DISPOSED OF AT THE SITE. WASTES REPORTED TO HAVE BEEN DISPOSED OF INCLUDE SOLVENTS, PAINT THINNERS, FORMALDEHYDE PAINTS, PHENOL AND AMINE WASTES, DUST COLLECTOR RESIDUES, RESINS AND ESTER PRESS CAKES. INITIAL REMOVAL AND REMEDIAL ACTIONS COMPLETED AT THE SITE INCLUDE; FENCING THE ENTIRE FIFTEEN ACRES, INSTALLING A BENTONITE/SOIL SLURRY WALL KEYED INTO THE UNDERLYING AQUITARD, COVERING THE SITE WITH AN IMPERMEABLE SYNTHETIC MEMBRANE LINER, AND INSTALLING A PASSIVE GAS-VENTING SYSTEM (SEE THE ROD DATED 8/13/82 FOR ADDITIONAL INFORMATION).

THE COST-EFFECTIVE REMEDIAL ACTIONS SELECTED FOR THIS SITE INCLUDE; INSTALLATION OF GROUND WATER/LEACHATE AND INJECTION WELLS WITHIN THE CONTAINMENT SYSTEM TO DEWATER AND FLUSH THE SYSTEM, PUMPING AND TREATING THE GROUND WATER/LEACHATE FROM WITHIN THE CONTAINMENT SYSTEM (TREATMENT PREFERENCE OF THE COLLECTED LEACHATE IS ONSITE TREATMENT AND DISCHARGE TO THE POTW); INSTALLATION AND MONITORING OF GROUND WATER WELLS DOWN GRADIENT OF THE SITE; FLUSHING THE CONTAINMENT SYSTEM TO CLEANSE THE ENCAPSULATED MATERIAL OF WATER-BORNE CONTAMINANTS; AND CONTINUED PUMPING AND TREATING OF THE GROUND WATER SHOULD APPLICABLE STANDARDS NOT BE MET ONCE FLUSHING IS TERMINATED. IDENTIFICATION OF REMEDIAL ACTION ALTERNATIVES TO MITIGATE POTENTIALLY CONTAMINATED OFFSITE AREAS WILL BE MADE IN THE NEAR FUTURE. THE ESTIMATED CAPITAL COST FOR THIS PROJECT IS $3,464,000 AND ANNUAL O&M COSTS ARE ESTIMATED TO BE $715,000. THESE ESTIMATES WILL BE AFFECTED BY THE OFFSITE/ONSITE TREATMENT SYSTEMS ULTIMATELY DESIGNED.
 
Remedy:  1. INSTALL GROUNDWATER/LEACHATE EXTRACTION AND INJECTION WELLS WITHIN THE CONTAINMENT SYSTEM FOR DEWATERING AND FLUSHING OF THE SYSTEM.
2. PUMP AND TREAT THE GROUNDWATER/LEACHATE FROM WITHIN THE CONTAINMENT SYSTEM UNTIL IT REACHES AN ELEVATION OF APPROXIMATELY 100 FEET ABOVE MEAN SEA LEVEL (UPPER COHANSEY). THE TREATMENT PREFERENCE FOR COLLECTED LEACHATE IS ON-SITE PRETREATMENT AND DISCHARGE TO THE POTW. IMPLEMENTATION IS DEPENDENT ON TIMELY APPROVAL BY THE STATE OF NEW JERSEY AND THE LOCAL POTW. IF SUCH APPROVAL IS NOT PROVIDED, THE LEACHATE MAY BE TREATED ON-SITE AND DISCHARGED TO NEARBY SURFACE WATERS, OR TRANSPORTED OFF-SITE FOR TREATMENT AT A PERMITTED HAZARDOUS WASTE FACILITY.
3. INSTALL AND MONITOR GROUNDWATER WELLS DOWNGRADIENT OF THE SITE SITE WITHIN THE KIRKWOOD AQUIFER.
4. FLUSH THE CONTAINMENT SYSTEM TO CLEANSE THE ENCAPSULATED MATERIAL OF WATER-BORNE CONTAMINANTS. THIS OPERATION WILL BE COORDINATED WITH ANY OFF-SITE REMEDIAL ACTION, ESPECIALLY WITH REGARD TO LEACHATE TREATMENT. AN ESTIMATED 15 YEARS IS REQUIRED TO REMOVE 90% OF THE WATER-BORNE CONTAMINANTS FROM THE GROUNDWATER WITHIN THE CONTAINMENT SYSTEM. THROUGHOUT THE OPERATION, REGULAR EVALUATIONS WILL BE MADE TO DETERMINE THE EFFECTIVENESS OF THE FLUSHING PROGRAM; AS WELL AS, THE NEED TO CONTINUE THIS PROGRAM OR TO TAKE OTHER ACTIONS.
5. THE FLUSHING OPERATION WILL ACHIEVE THE REDUCTION OF CONTAMINANTS IN THE CONTAINMENT SYSTEM TO THE LIMITS OF ITS TECHNOLOGY. SHOULD IT BE DETERMINED THAT THE RESULTING GROUNDWATER DOES NOT MEET APPLICABLE STANDARDS, THEN PUMPING AND TREATMENT OF THE GROUNDWATER/LEACHATE FROM WITHIN THE CONTAINMENT SYSTEM WILL BE MAINTAINED, AFTER THE FLUSHING OPERATION IS TERMINATED, TO CONTROL LOWER WATER LEVELS WITHIN THE SYSTEM THAN OUTSIDE.
 
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