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Record of Decision System (RODS)

DELTA QUARRIES & DISPOSAL, INC./STOTLER LANDFILL

Abstract

Site Name:  DELTA QUARRIES & DISPOSAL, INC./STOTLER LANDFILL
Address:  SAND BANK RD 
City & State:  ANTIS/LOGAN TWPS  PA  16602
County:  BLAIR
 
EPA ID:  PAD981038052
EPA Region:  03
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R03-91/111
ROD Date:  03/29/1991
Operable Unit(s):  01
 
Media:  GROUNDWATER
 
Contaminant:  VOCS, PCE, TCE, VINYL CHLORIDE, METALS, MANGANESE
 
Abstract:  THE 137-ACRE DELTA QUARRIES/STOTLER LANDFILL SITE INCLUDES A 57-ACRE FORMER LANDFILL, AND IS LOCATED BETWEEN THE CITY OF ALTOONA, LOGAN TOWNSHIP AND THE VILLAGE OF PINECROFT, ANTIS TOWNSHIP, PENNSYLVANIA. LAND USE IN THE AREA IS RURAL. SEVERAL RESIDENCES ARE APPROXIMATELY 35 FEET EAST OF THE LANDFILL BOUNDARY, AND WETLANDS AREAS EXIST TO THE SOUTHEAST AND NORTHEAST. RESIDENCES AND BUSINESSES IN THE VICINITY OF THE SITE RELY ON PRIVATE WELLS ADJACENT TO THE LANDFILL FOR THEIR DRINKING WATER SUPPLY. BEGINNING IN 1964, TWO ADJACENT MUNICIPAL LANDFILLS WERE OPERATED ONSITE, AND IN 1976 THESE OPERATIONS WERE MERGED INTO ONE LANDFILL, KNOWN AS THE STOTLER LANDFILL. DELTA QUARRIES AND DISPOSAL, INC. PURCHASED THE LANDFILL AND CONTINUED TO OPERATE THE FACILITY UNTIL ITS CLOSURE IN 1985. REPORTS FROM EPA, THE STATE, AND PREVIOUS LANDFILL OPERATORS INDICATE THAT MUNICIPAL WASTES COMPRISE 98 PERCENT OF THE TOTAL LANDFILLED WASTES; HOWEVER, THE LANDFILL HAD ACCEPTED SOME INDUSTRIAL WASTES INCLUDING ORGANIC SOLVENTS, PROCESS SLUDGES AND METALS FROM ELECTROPLATING OPERATION, TRAMP OILS AND RESIDUES FROM SLUDGE SEDIMENTATION BASINS, WHICH HAVE CONTAMINATED ONSITE SOIL AND GROUND WATER IN THE LANDFILL AREA. IN 1984, THE STATE AND DELTA QUARRIES ENTERED INTO A CONSENT ORDER TO DEVELOP AND IMPLEMENT A CLOSURE PLAN FOR THE LANDFILL. IN 1987, THE SITE OWNERS INITIATED THE PLAN BY PLACING A 4-FOOT SOIL CAP OVER THE LANDFILL, VEGETATING THE AREA, AND INSTALLING SEDIMENTATION CONTROLS INCLUDING INTERCEPTOR BERMS, CHANNELS, AND SEDIMENTATION BASINS. ALL ELEMENTS OF THE CLOSURE PLAN WERE COMPLETED EXCEPT INSTALLATION OF GAS VENTING. THIS RECORD OF DECISION (ROD) ADDRESSES ONSITE GROUND WATER CONTAMINATION. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE GROUND WATER ARE VOCS INCLUDING PCE, TCE AND VINYL CHLORIDE; AND METALS INCLUDING MANGANESE.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES PUMPING AND ONSITE PRETREATMENT OF GROUND WATER USING PRECIPITATION TO REMOVE METALS, IF NECESSARY, FOLLOWED BY ONSITE TREATMENT USING AIR STRIPPING; DISCHARGING THE TREATED WATER OFFSITE TO LITTLE JUNIATA RIVER; CONTROLLING AIR EMISSIONS USING ACTIVATED CARBON; MONITORING GROUND WATER AND SURFACE WATER; MAINTAINING THE CAP, AND INSTALLING A GAS VENTING SYSTEM; CONDUCTING PERIODIC SITE REVIEWS; AND IMPLEMENTING INSTITUTIONAL CONTROLS INCLUDING DEED AND LAND USE RESTRICTIONS, AND SITE ACCESS RESTRICTIONS SUCH AS FENCING. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $2,344,581, WHICH INCLUDES A PRESENT WORTH O&M COST OF $1,176,989 OVER 30 YEARS.

PERFORMANCE STANDARDS OR GOALS; CHEMICAL-SPECIFIC GROUND WATER CLEANUP STANDARDS ARE BASED ON THE MORE STRINGENT OF SDWA MCLS OR BACKGROUND LEVELS, AND INCLUDE 1,2-DCA 5 UG/L (MCL); CIS-1,2-DCE 70 UG/L (MCL); TRANS-1,2-DCE 100 UG/L (MCL); CHLOROFORM 100 UG/L (MCL); PCE 5 UG/L (MCL); TCE 5 UG/L (MCL); AND VINYL CHLORIDE 2 UG/L (MCL).
 
Remedy:  THE REMEDIAL ACTION PLAN IN THIS DOCUMENT IS PRESENTED AS THE PERMANENT REMEDY FOR CONTROLLING THE GROUNDWATER CONTAMINATION AT THE SITE.

THIS REMEDY COMPRISES THE FOLLOWING COMPONENTS;
* EXTRACTING AND TREATING THE GROUNDWATER TO QUICKLY HALT PLUME MIGRATION, WITH THE LONG-TERM GOAL OF RETURNING THE GROUNDWATER TO ITS MOST BENEFICIAL USE.
* PROVIDE ADDITIONAL PROTECTION BY IMPLEMENTING INSTITUTIONAL CONTROLS TO RESTRICT THE USE OF THE LANDFILL AND THE INSTALLING OF SECURITY FENCING AROUND THE PROPERTY IN CONJUNCTION WITH THE EXISTING SOIL CAP, TO PREVENT ANY POSSIBLE DIRECT HUMAN CONTACT WITH CONTAMINANTS AT THE SITE, TO PROVIDE PROTECTION TO THE INTEGRITY OF THE CAP BY PREVENTING ANY INTRUSION WHICH COULD COMPROMISE THE CAP.
* MONITORING GROUND AND SURFACE WATER AND IMPLEMENTING A SITE MAINTENANCE PROGRAM INCLUDING THE INSTALLATION OF METHANE GAS VENTING.
 
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