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Waterloo Food and Fuel -3- August 12, 2010 <br />Claim No. 14120 <br />IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br />Contaminant Soil (mg/kg) Water (ug/L) WQ0s <br />(ug/L) Maximum Latest Maximum <br />* <br />Latest <br />(July 2010) <br />TPH-g NA NA 34,000,000 200,000 5 <br />TPH-d NA NA NA NA 56 <br />Benzene NA NA 500,000 11,000 0,15 <br />Toluene NA NA 3,400,000 24,000 42 <br />Ethylbenzene NA NA 1,900,000 3,700 29 <br />Xylenes NA NA 2,600,000 27,000 17 <br />MTBE NA NA 580,000 8,700 5 <br />TBA NA NA 27,000 <10 12 <br />1,2-DCA NA NA 550 NA 0.5 <br />Lead NA NA NA NA 15 <br />PCE NA NA NA NA 0.06 <br />TCE NA NA NA NA 0.8 <br />NA <br /> Not Analyzed, Not Applicable, or Data Not Available <br />WOO <br /> <br />Water Quality Objectives <br />Data from GeoTracker <br />FREE PRODUCT: up to 0.47 feet of free phase product noted in site wells <br />SOIL AND GROUNDWATER REMEDIATION <br />Soil Excavation: 100 cubic yards of contaminated soil was excavated in <br />Feb 99. <br />In-Situ Soil Remediation: <br />METHOD: soil vapor extraction <br />DURATION: Dec 06 through present <br />TOTAL MASS REMOVED: 31,814 pounds of TPH-G (Dec 09) <br />RATE OF TPH-G REMOVAL: 2 pounds/hour (Dec 09) <br />C. Groundwater Remediation: <br />METHOD: groundwater extraction <br />DURATION: May 03 through present <br />TOTAL MASS OF HYDROCARBONS REMOVED: 11,243 pounds <br />California Environmental Protection Agency <br />01 Recycled Paper