Jump to main content.


Local Navigation


Record of Decision System (RODS)

OAK GROVE SANITARY LANDFILL

Abstract

Site Name:  OAK GROVE SANITARY LANDFILL
Address:  2536 VIKING BLVD NORTHWEST 
City & State:  OAK GROVE TOWNSHIP  MN  55011
County:  ANOKA
 
EPA ID:  MND980904056
EPA Region:  05
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-88/074
ROD Date:  09/30/1988
Operable Unit(s):  01
 
Media:  GROUNDWATER SURFACE WATER
 
Contaminant:  VOCS, ETHYL BENZENE, TOLUENE, XYLENES
 
Abstract:  THE OAK GROVE SANITARY LANDFILL COVERS 45 TO 50 ACRES IN OAK GROVE TOWNSHIP, ANOKA COUNTY, MINNESOTA, APPROXIMATELY 38 MILES NORTHWEST OF ST. PAUL. THERE ARE 249 PEOPLE THAT LIVE WITHIN 1 MILE OF THE SITE AND 6,786 RESIDE WITHIN 4 MILES. THE MAJORITY OF THESE RESIDENTS DEPEND ON WATER FROM WELLS DRAWN PRIMARILY FROM THE LOWER AQUIFER, OR SURFACE WATER SOURCES. SURFACE RUNOFF FROM THE LANDFILL EMPTIES INTO A WETLAND TO THE SOUTH. A CREEK FLOWS THROUGH THIS WETLAND, DISCHARGING TO RUM RIVER TWO TO THREE MILES SOUTHWEST OF THE SITE. THE LANDFILL RECEIVED 200,000 TO 300,000 CUBIC YARDS OF WASTE PER YEAR FROM 1976 UNTIL IT REACHED ITS PERMITTED CAPACITY IN LATE 1983. MOST OF THIS WASTE CONSISTS OF HOUSEHOLD TRASH AND GARBAGE. IN ADDITION, WASTE CONSISTING OF OIL SLUDGE FROM AN OIL RECYCLING PROCESS, PAINT AND SOLVENT WASTES, FOUNDRY WASTES, METAL SLUDGES, ORGANIC COMPOUNDS FROM PESTICIDE MANUFACTURING, CUTTING OILS AND LUBRICANTS, CLEANING SOLVENTS, AND INKS ARE REPORTED TO HAVE BEEN BURIED NEAR THE CENTER OF THE LANDFILL BUT THEIR EXACT LOCATION IS UNKNOWN. MINNESOTA POLLUTION CONTROL AGENCY (MPCA) AND ANOKA COUNTY RECORDS INDICATE A NUMBER OF VIOLATIONS AND OPERATIONAL PROBLEMS THROUGHOUT THE ACTIVE HISTORY OF THE SITE. MPCA DISCOVERED A GROUND WATER CONTAMINATION PROBLEM FROM MONITORING WELL SAMPLES OBTAINED AT THE SITE IN 1984. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING GROUND WATER AND SURFACE WATER ARE VOCS INCLUDING ETHYL BENZENE, TOLUENE AND XYLENES.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES: INSTALLATION OF A SECURITY FENCE; CAPPING WITH A FINAL COVER SYSTEM CONSISTING OF A GAS CONTROL LAYER, A BARRIER LAYER OF LOW PERMEABLE MATERIAL OR A FLEXIBLE MEMBRANE AND A DRAINAGE LAYER; TOPSOIL COVER AND VEGETATION; DEED RESTRICTIONS; CONSIDERATION OF TREATMENT OPTIONS FOR AIR EMISSIONS FROM GAS VENTS AFTER CONSTRUCTION OF THE FINAL COVER; CONSIDERATION DURING DESIGN OF THE NEED FOR EXTRA PROTECTION FOR FROST DAMAGE WITHOUT SIGNIFICANTLY INCREASING COST OR LIKELIHOOD OF FAILURE; AND AIR AND GROUND WATER MONITORING. THE SECOND REMEDIAL ACTION WILL ADDRESS THE GROUND WATER CONTAMINATION AND POSSIBLE REMEDIATION OF THE DOWNGRADIENT PLUME. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $6,300,000 TO $11,100,000 IF A CLAY BARRIER IS INSTALLED, OR $5,500,000 TO $9,300,000 IF A SYNTHETIC MEMBRANE BARRIER IS INSTALLED, WITH ANNUAL O&M OF $42,000 OR $40,000.
 
Remedy:  THIS OPERABLE UNIT IS THE FIRST OF TWO OPERABLE UNITS FOR THE SITE. THE FIRST OPERABLE UNIT ADDRESSES THE SOURCE OF THE CONTAMINATION BY CONTAINING THE ON-SITE WASTES AND CONTAMINATED SOIL. THE FUNCTION OF THIS OPERABLE UNIT IS TO PROVIDE A FINAL COVER FOR THE OAK GROVE SANITARY LANDFILL WHICH WILL PREVENT OR MINIMIZE GROUND WATER CONTAMINATION AND RISKS ASSOCIATED WITH EXPOSURE TO THE CONTAMINATED MATERIALS. THE REMEDY DOES NOT FULLY ADDRESS THE PRINCIPAL THREATS AT THE SITE BECAUSE IT IS NOT APPROPRIATE TO ADDRESS THE GROUND WATER CONTAMINATION AT THIS TIME. THE SECOND OPERABLE UNIT WILL ADDRESS THE GROUND WATER CONTAMINATION AND POSSIBLE REMEDIATION OF THE DOWNGRADIENT PLUME.
THE MAJOR COMPONENTS OF THE SELECTED REMEDY INCLUDE;
* CAPPING WITH A FINAL COVER SYSTEM CONSISTING OF A GAS CONTROL LAYER, A BARRIER LAYER OF LOW PERMEABLE MATERIAL OR A FLEXIBLE MEMBRANE, AND A DRAINAGE LAYER;
* TOPSOIL COVER AND VEGETATION;
* SITE DEED RESTRICTIONS LIMITING FURTHER USE OF THE SITE;
* TREATMENT OPTIONS FOR AIR EMISSIONS FROM GAS VENTS WILL BE CONSIDERED AFTER CONSTRUCTION OF THE FINAL COVER;
* CONSIDERATION DURING DESIGN, OF THE NEED FOR EXTRA PROTECTION FROM FROST DAMAGE WITHOUT SIGNIFICANTLY INCREASING COST OR LIKELIHOOD OF FAILURE, AND
* AIR AND GROUND WATER MONITORING TO ENSURE THE EFFECTIVENESS OF THE REMEDIAL ACTION WILL BE IMPLEMENT AFTER CONSTRUCTION OF THE FINAL COVER. THE BARRIER LAYER COMPONENT OF THE FINAL COVER SYSTEM WILL BE EVALUATED DURING THE REMEDIAL DESIGN TO DETERMINE ??ETHER LOW PERMEABILITY MATERIAL (CLAY) OR A FLEXIBLE SYNTHETIC LINER IS BEST SUITED FOR USE. THIS ACTION WILL REQUIRE OPERATION AND MAINTENANCE ACTIVITIES TO ENSURE CONTINUED EFFECTIVENESS OF THE REMEDIAL ALTERNATIVE. THE ACTION' BEING TAKEN IS CONSISTENT WITH SECTION 121 OF CERCLA AS AMENDED BY SARA, 42 U.S.C. # 9621.
 
Text:  View full-text ROD [ 40K ]
To download a full-text ROD, right click on the above link and select Save Link As. A full-text ROD is in PDF format. Please note that download time may be extended given the size of the full-text document. File size is noted in kilobytes (K) or megabytes (M) next to the download link.
About Adobe Portable Document Format
 
Return to Search Results   

OSWER Home | Superfund Home


Jump to main content.