Site Name: HARDAGE/CRINER

EPA ID: OKD000400093 EPA Region: 06 Metro Statistical Area: 5880

MI W OF TOWN ON HWY 122, CRINER, OK 73080

Site Description: CLOSED IN 1980, THE WASTE DISPOSAL FACILITY HAD AN OPEN DUMPAND SURFACE IMPOUNDMENT, WHICH RECEIVED SUCH WASTES AS ASBESTOS, CYANIDES AND FLAMMABLE SLUDGES. GROUND & SURFACE WATER CONTAMINATION THREATENS NEARBY RESIDENCES.

ROD ID: EPA/ROD/R06-90/054 ROD Date: 11/22/89

Contaminant: VOCS; BENZENE; PCE; TCE; CARCINOGENIC COMPOUNDS; PESTICIDES; PCBS; ARSENIC; CHROMIUM; LEAD; O&M Costs: Estimated Costs:

Abstract: THE HARDAGE/CRINER SITE IS IN AN AGRICULTURAL AREA NEAR CRINER, MCCLAIN COUNTY, IN CENTRAL OKLAHOMA. THE SITE IS SITUATED IN THE NORTH CRINER CREEK DRAINAGE BASIN, APPROXIMATELY 0.8 MILES FROM THE CONFLUENCE OF NORTH CRINER CREEK AND CRINER CREEK. FROM 1972 TO 1980 THE SITE WAS OPERATED UNDER A STATE PERMIT FOR THE DISPOSAL OF INDUSTRIAL WASTES INCLUDING PAINT SLUDGES AND SOLIDS, INK SOLVENTS, TIRE MANUFACTURING WASTES, OILS, OTHER SOLVENTS, CYANIDES, AND PLATING WASTE SLUDGES. WASTE DISPOSAL PRACTICES HAVE RESULTED IN THE CONTAMINATION OF APPROXIMATELY 70 ACRES OF GROUND WATER BENEATH AND ADJACENT TO THE SITE AS WELL AS SEVERAL ACRES OF SURFACE SOIL. THE PRINCIPAL SOURCE OF CONTAMINATION IS APPROXIMATELY 278,000 CUBIC YARDS OF SLUDGES, WASTE DRUMS, HIGHLY CONTAMINATED SOIL, AND WASTE LIQUIDS CONTAINED IN THREE MAIN WASTE (SOURCE) AREAS NEAR THE CENTER OF THE PROPERTY. ADDITIONAL SOURCE AREAS INCLUDE SCATTERED MIXING PONDS, SPILL AREAS, AND RUNOFF PATHS IN THE VICINITY OF THE MAIN SOURCE AREAS. DENSE NON-AQUEOUS PHASE LIQUIDS HAVE POOLED BENEATH THE DISPOSAL AREAS AND ARE A CONTINUING SOURCE OF CONTAMINATION TO THE GROUND WATER. A 1986 RECORD OF DECISION (ROD) ADDRESSED SOURCE CONTROL THROUGH INCINERATION, STABILIZATION, AND ONSITE DISPOSAL; HOWEVER, THE REMEDIAL ACTION WAS NEVER IMPLEMENTED DUE TO PROTRACTED LITIGATION. THE 1989 ROD AMENDMENT PROVIDES A COMPREHENSIVE SITE REMEDY ADDRESSING BOTH SOURCE CONTROL AND GROUND WATER REMEDIATION AND TAKES INTO CONSIDERATION RECENTLY ENACTED LAND DISPOSAL RESTRICTIONS. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING SOIL, DEBRIS, AND GROUND WATER ARE VOCS INCLUDING BENZENE, PCE, TCE AND OTHER CARCINOGENIC COMPOUNDS; OTHER ORGANICS INCLUDING PESTICIDES AND PCBS; AND METALS INCLUDING ARSENIC, CHROMIUM, AND LEAD. THE SELECTED REMEDIAL ACTION FOR THE SITE INCLUDES SOURCE CONTROL AND GROUND WATER COMPONENTS. SOURCE CONTROL REMEDIATION INCLUDES INSTALLATION OF LIQUID EXTRACTION WELLS TO PUMP OUT FREE LIQUIDS CURRENTLY POOLED IN THE THREE WASTE AREAS AND ANY LIQUIDS RELEASED FROM DRUMS BURIED IN THE MOUNDS, FOLLOWED BY OFFSITE TREATMENT OF THE REMOVED ORGANIC LIQUIDS AND ONSITE TREATMENT OF AQUEOUS LIQUIDS; EXCAVATION OF DRUMMED ORGANIC LIQUIDS FOR OFFSITE DESTRUCTION; EXCAVATION AND CONSOLIDATION OF CONTAMINATED SOIL ADJACENT TO THE MAIN SOURCE AREAS WITH PLACEMENT IN THE MAIN SOURCE AREAS, FOLLOWED BY TEMPORARY CAPPING; TREATMENT OF THE MAIN SOURCE AREAS USING IN-SITU SOIL VAPOR EXTRACTION WITH TREATMENT OF AIR USED IN SOIL EXTRACTION BY THERMAL DESTRUCTION; INSTALLATION OF A PERMANENT RCRA-COMPLIANT CAP ONCE REMEDIAL ACTIVITIES ARE COMPLETE. GROUND WATER COMPONENTS ARE DESIGNED TO CONTROL THE SPREAD OF GROUND WATER PLUMES AND PROTECT DOWNGRADIENT AREAS BECAUSE OF THE TECHNICAL IMPRACTICABILITY OF RESTORATION OF THE BEDROCK AQUIFER. GROUND WATER REMEDIATION INCLUDES INSTALLATION OF AN INTERCEPTOR TRENCH DOWNGRADIENT OF THE SOURCE AREAS TO INTERCEPT AND COLLECT CONTAMINATED GROUND WATER MIGRATING IN BEDROCK ZONES, AND A SECOND TRENCH OR EQUALLY EFFECTIVE SYSTEM OF EXTRACTION WELLS TO INTERCEPT AND COLLECT CONTAMINATED GROUNDWATER CONTAMINATING THE ALLUVIUM; DESIGN AND CONSTRUCTION OF AN ONSITE GROUND WATER TREATMENT SYSTEM TO TREAT BOTH ORGANIC AND INORGANIC CONTAMINANTS BEFORE DISCHARGE OF TREATED WATER TO SURFACE WATER. CONTAMINANTS ALREADY PRESENT IN THE ALLUVIUM WILL BE ALLOWED TO DISSIPATE BY NATURAL DILUTION, NATURAL ATTENUATION, AND FLUSHING; HOWEVER, ACTIVE RESTORATION WILL BE IMPLEMENTED IF CONTAMINANT REDUCTION GOALS ARE NOT MET. IN ADDITION, INSTITUTIONAL CONTROLS, SURFACE WATER CONTROLS, AND MULTIMEDIA MONITORING WILL BE IMPLEMENTED, AND THE CURRENT PROVISION OF AN ALTERNATE WATER SUPPLY WILL BE CONTINUED. THE ESTIMATED PRESENT WORTH COST OF THIS REMEDIAL ACTION IS $62,904,655, WHICH INCLUDES AN ANNUAL O&M COST OF $1,300,000. PERFORMANCE STANDARDS OR GOALS: THE GOAL OF THE SOIL VAPOR EXTRACTION IS A 99 PERCENT REDUCTION OF THE VOC CONCENTRATIONS FOUND AT THE BEGINNING OF TREATMENT. BEYOND REDUCTION OF THE SOURCE, THE GOAL OF THIS ACTION IS TO RESTORE THE GROUND WATER, ESPECIALLY THE ALLUVIAL AQUIFER ASSOCIATED WITH NORTH CRINER CREEK, TO LEVELS BELOW MCLS, INCLUDING CHROMIUM 50 UG/L. IF CONTAMINANT CONCENTRATIONS IN THE ALLUVIUM INCREASE AFTER TRENCH INSTALLATION AND PUMPING, OR THERE IS A DECLINE IN THE MASS OF CONTAMINANTS OF LESS THAN 40 PERCENT IN 10 YEARS, ACTIVE RESTORATION OF THE ALLUVIUM WELL BE IMPLEMENTED.

Remedy: THE 1989 PROPOSED REMEDY IS A COMPREHENSIVE SITE REMEDY ADDRESSING BOTH SOURCE CONTROL AND GROUNDWATER OPERABLE UNITS AT THE HARDAGE/CRINER SITE. IT INVOLVES A MODIFICATION OF THE 1986 ROD FOR SOURCE CONTROL, AND INCORPORATES NEW GROUNDWATER RESPONSE ACTIONS. THE MAJOR COMPONENTS OF THIS REMEDIAL ACTION CONSIST OF THE FOLLOWING SOURCE CONTROL AND GROUNDWATER COMPONENTS: SOURCE CONTROL

* THE INSTALLATION OF LIQUID EXTRACTION WELLS IN THREE MAIN SOURCE AREAS TO PUMP OUT FREE LIQUIDS CURRENTLY POOLED IN THESE AREAS AND ANY LIQUIDS RELEASED FROM DRUMS BURIED IN THE MOUNDS.

* EXCAVATION AS PER THE 1986 ROD FOR DIRECT REMOVAL OF DRUMMED LIQUIDS IN THE BARREL MOUND AND MAIN PIT.

* EXCAVATION OF CONTAMINATED SOILS IN AREAS ADJACENT TO THE THREE MAIN SOURCE AREAS AND TRANSPORT TO THE SOURCE AREAS. THESE MATERIALS WOULD BE CONSOLIDATED UNDER A TEMPORARY CAP IN THE MAIN SOURCE AREAS WHERE THEY WOULD BE TREATED USING SOIL VAPOR EXTRACTION.

* USE OF SOIL VAPOR EXTRACTION TO DRAW AIR THROUGH THE SOURCE AREAS AFTER CONSOLIDATION TO EVAPORATE CONTAMINANTS AND PERMANENTLY REMOVE THEM TO THE SURFACE THROUGH AIR EXTRACTION WELLS.

* PERMANENT SOURCE AREA CAPPING ONCE REMEDIATION ACTIVITIES ARE COMPLETE. A TEMPORARY CAP WILL BE INSTALLED DURING REMEDIATION ACTIVITIES, FOLLOWED BY A PERMANENT RCRA-COMPLIANT CAP AT THE END OF REMEDIATION.

* GROUNDWATER COMPONENTS SUMMARIZED BELOW WOULD BE IMPLEMENTED IN CONJUNCTION WITH A SUBSTANTIAL REDUCTION OF THE CONTAMINANTSOURCE AREAS THERBY REDUCING THE LONG-TERM POTENTIAL CONTRIBUTION OF THE SOURCES TO GROUNDWATER.

* THE INSTALLATION OF A V-SHAPED TRENCH LOCATED DOWNGRADIENT (WEST, SOUTH AND EAST) OF THE THREE MAIN SOURCE AREAS TO INTERCEPT AND COLLECT CONTAMINATED GROUNDWATER MIGRATING IN ALL BEDROCK ZONES EXISTING ABOVE STRATUM IV.

* THE INSTALLATION OF AN INTERCEPTOR TRENCH, OR EQUALLY EFFECTIVE SYSTEM OF EXTRACTION WELLS, IN THE SOUTHWESTERN PART OF THE SITE TO CONTAIN CONTAMINATED GROUNDWATER MOVING INTO THE ALLUVIUM FROM BEDROCK ZONES STRATUM IV.

* THE DESIGN AND CONSTRUCTION OF AN ONSITE GROUNDWATER TREATMENT SYSTEM INCORPORATING TREATMENT PROCESSES TO TREAT BOTH ORGANIC AND INORGANIC CONTAMINANTS TO SURFACE WATER DISCHARGE STANDARDS.

* ALLUVIAL GROUNDWATER RESTORATION. CONTAMINANTS ALREADY PRESENT IN THE ALLUVIUM WOULD BE ALLOWED TO DISSIPATE BY NATURAL DILUTION, NATURAL BIODEGRADATION AND FLUSHING.

* INSTITUTIONAL CONTROLS, INCLUDING FENCING, DEED RESTRICTIONS, AND MAINTENANCE OF THE AVAILABILITY OF AN ALTERNATE WATER SUPPLY SYSTEM.

* SURFACE WATER CONTROLS TO COLLECT SURFACE WATER DRAINAGE FROM THE SOURCE AREAS DURING REMEDY IMPLEMENTATION, AND TO DIVERT UNCONTAMINATED RUNOFF AWAY FROM THE WORKING AREA IN ORDER TO MINIMIZE THE GENERATION OF CONTAMINATED GROUNDWATER.

* REMEDIAL MONITORING TO VERIFY THAT THE MIGRATION OF CONTAMINANTS HAS BEEN HALTED.