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Foppiano Investment< -3- May 2 , 2008 <br /> w Claim No . 14821 <br /> N , <br /> IV, MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil ma/k PRGs Water (ug/L WQOs <br /> Maximum Latest Residential Industrial Maximum Latest (ug/L) <br /> (mg/k (mg/kg) Mar 08 <br /> -fP-H-g NA NA NA NA 180, 000 110, 000 5 <br /> TPH-d NA NA NA NA NA NA 49 <br /> Benzene NA NA 0. 64 1 .4 10, 100 33200 0. 15 <br /> Toluene NA NA 520 520 405600 121000 42 <br /> Eth (benzene NA NA 400 400 30,000 73300 29 <br /> Xylenes NA NA 270 420 35 , 000 39, 000 17 <br /> MTBE NA NA 32 70 122 44 5 <br /> TBA NA NA NA NA. 130 79 12 <br /> 1 ,2-DCA NA NA NA NA 13170 490 0. 5 <br /> Lead NA NA 400 800 NA NA 15 <br /> PCE NA NA 17 130 NA NA 0. 06 <br /> TCE NA NA 0. 11 110 NA NA 0. 8 <br /> PRGs - USEPA Region 9 Preliminary Remediation Goals <br /> MCL Maximum Contaminant Levels - <br /> AL Action Level <br /> NA Not Analyzed, Not Applicable, or Data Not Available <br /> WQO Water Quality Objectives - <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation : unknown volume <br /> B. In-Situ Soil Groundwater Remediation : none identified ; feasibility study <br /> underway <br /> D. Groundwater Trends : <br /> • Benzene trends are shown below: <br /> Claim 14821 <br /> 12000 <br /> 10000 <br /> m 8000 - - -- -._ _---- -- <br /> m 6000 <br /> MJV-1 <br /> a t NNV-8 <br /> c 4000 — - <br /> d <br /> m <br /> 2000 <br /> 0 <br /> p`b o°` . o°` dN o`' Q' o`' RbOro p° o% pA oA - <br /> 0 deo foo 0 < e`o )33 O� den SJR a e<Z sJc O°i <br /> Time <br /> California Environmental Protection Agency <br /> Zo' Recycled Paper <br />