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DIK Enterprises Inc. -4- June 3, 2010 <br /> Claim No. 12992 <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k Water u /L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jan 2010 <br /> TPH- NA NA 120,000 13,000 5 <br /> TPH-d NA NA 18,000 NA 56 <br /> Benzene NA NA 8,800 1,100 0.15 <br /> Toluene NA NA 1,100 26 42 <br /> Eth (benzene NA NA 1,500 45 29 <br /> Xylenes NA NA 5,200 2,430 17 <br /> MTBE NA NA 150 NA 5 <br /> TBA NA NA 190 NA 12 <br /> 1,2-DCA NA NA 970 17 0.4 <br /> Lead NA NA NA NA 15 <br /> PCE NA NANA NA 0.06 <br /> TCE NA NA NA NA 0.8 <br /> NA Not Analyzed, Not Applicable,or Data Not Available <br /> WQO Water Quality Objectives <br /> FP Free phase product in site wells <br /> V. FREE PRODUCT: none identified <br /> VI. SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation: unknown volume <br /> B. In-Situ Soil Remediation: <br /> METHOD: soil vapor extraction was proposed in May 2007, three years ago. <br /> C. Groundwater Remediation: <br /> • METHOD: air sparging was proposed in May 2007, three years ago. <br /> California Environmental Protection Agency <br /> 2a Recycled Paper <br />