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III. Soil Remediation Information <br /> Soil remediation method(s) v--'Pw Ek racttcrl/twavatun -- Aerat n <br /> Volume treated and/or removed 10,415 Qa nc Yards <br /> Contaminated soil disposal site Nr1e MjU e>ravated soil._aWted and left at Site <br /> If contamination is remaining, describe concentration range and volume (cubic yards or meters) <br /> M§ 2-240OM/1ag, Toluene 0.006 — 5.7krg/lg, Harte 0.09-21mq/lag, Xylene ,007 210rrg/lg 3n 219 cub3.c yards <br /> Table III - Maximum documented contaminant concentrations in soil before and after cleanup <br /> Contaminant Method Before After Depth Contaminant Method Before After Depth <br /> used (mg/kg) (mglkg) (h) used (mg/kg) (mg/kg) (ft) <br /> TPH (Gas) 8015/5030 11 ,000 530 15 Benzene 8020 2300 0.63 15 <br /> TPH (Diesel) Toluene 8020 2000 5.7 15 <br /> Other fuel Ethylbenune 8020 180 4.6 15 <br /> Heavy metals Xylene 8020 3400 67 15 <br /> Other Other <br /> IV. Groundwater Remediation Information <br /> Groundwater remediation method(s) yapc- <br /> Volume treated and/or removed Nom <br /> If contamination is remaining, describe concentration range and:plume (gallons or liters) <br /> 2.5ug/t, Xylene new Mas 3n apFacDarnately 28,300 gallons (756ft. X 5ft.) _ <br /> ---•--- <br /> t. Table IV - Maximum documented cont mmant concentrations m groundwater before and after cleanup <br /> Contaminant Method Before After Depth Contam,nant Method Before After Depth <br /> used (mgA) (mg/1) (h) used (mg/1) (Mg/1) (ft) <br /> TPH (Gas) 8015/5030 31 0.05 —39.39 Benzene 602 5.400 0.0005 —39.39 <br /> TPH (Diesel) Toluene 602 7.300 0.0005 1 39.39 <br /> Other fuel Ethylbenzene 602 .180 (0.0005 39.39 <br /> Heavy metals Xylene 602 7.8 .0025 39.39 <br /> Other Other <br /> V. Closure <br /> Does Regional Board concur with closure'? Yes No <br /> Rationale for closure <br />�~ Locatton of reports on file (Agency/Room) <br /> County Staff person Phone <br /> Regional Board office Staff person Phone <br /> SBR Chekltst wp 10 September 1993 <br />