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HA MEL <br /> JUL 2 7 2001 GEOMATPIX <br /> TABLE 1 <br /> ENVIRON;viENI HEALTH Page 2of2 <br /> SOIL CLEANUP CRITERIA PERMIT/SERVICES <br /> Target Cleanup Background Concen• Designated Lev e13'a Practical Quantitation <br /> Chemical Level' (mg/kg) tration2(mg(kg) (m ) Limit"6(mg/kg) <br /> Petroleum H drocarbous <br /> Benzene 0.26 NA 0.01 0.005 <br /> Toluene NSR NA 0.42 0.005 <br /> Ethyl Benzene NSR NA 0.29 0.005 <br /> Xylenes NSR NA 0.17 0.005 <br /> TPH- asoline NA NA 0.05 1 <br /> 1. Target Cleanup Levels from a May 24, L998 Geomatrix letter to RWQCB-. NSR=no significant risk. NA=not available. <br /> 2. Range of background concentrations in area soil. J=concentration estimated by the laboratory. <br /> 3. Designated Levels from an April 2, 1999 letter from the RWQCB to GSHL <br /> ' 4. Practical Quantitation Limits for laboratory analysis of soil samples a from an April 22, 1999 letter from CRA Services to Geomatrix. <br /> 5. NSR=no significant health risk based on Human Health Risk Assessment,Geomatrix, 1998. <br /> 6. The controlling criteria(higher of Designated Level and Practical Quantitation Limit)shown in bold type. <br /> is\pmj=t\5352\wksht\5352-26.xis <br />