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I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> i <br /> I <br /> I <br /> I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />yield the parameter scores. The parameter scores were summed to produce the total <br />score or index value. The total score or DRASTIC index for the three sites ranged from <br />155-182. These values fall between typical glaciated regional values for "Outwash over <br />Bedded Sedimentary", "Buried Valley" and "Outwash over Solution Limestone". These <br />relatively elevated indices are indicative of site susceptibility to groundwater <br />contamination and therefore not conducive to suitable locations for solid/hazardous waste <br />disposal facilities. <br /> <br />U.S. EPA Hazard Ranking System <br /> <br />All three of the potential sites are located adjacent to or near hazardous waste sites that <br />have been rated utilizing the U.S. EPA Hazard Ranking System (I-IRS). This method <br />was developed to evaluate and prioritize the need for remedial activities and correction <br />actions based on impact potential. The sites with the highest scores are listed on state <br />and/or federal Superfund lists and ranked for cleanup priority. The HRS scores were <br />developed as shown below: <br /> <br />Site <br /> <br />D <br /> <br />P <br /> <br />Q <br /> <br />Associated Hazardous Waste Site <br /> <br />South Andover <br />Waste Disposal Engineering <br /> <br />Anoka Regional Sanitary Landfill <br />Oak Grove Landfill <br /> <br /> National <br />HRS Score Priority List <br /> <br />34 Yes <br />51 Yes <br /> <br />51 No <br />43 Yes <br /> <br />Although an HRS score of 28.5 is sufficient to be nominated for inclusion on the <br />National Priority (Federal Superfund) List, the sites are considered on a case-by-case <br />basis and can thereby be eliminated from nomination. <br /> <br />24 <br /> <br /> <br />