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l Sara Lee Bakery Group 3 September 2, 2010 <br />Claim No. 2429 <br />n <br />IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br />Contaminant <br />Soil <br />m /k <br />Water <br />(ug/L <br />WQOs <br />Maximum <br />Latest <br />Maximum <br />Latest <br />(May 2010 <br />(ug/L) <br />TPH-g <br />NA <br />NA ' <br />196,000 <br />17,000 <br />5 <br />TPH-d <br />NA <br />NA <br />NA <br />NA <br />56 <br />Benzene <br />NA <br />NA <br />7,100 <br />360 <br />0.15 <br />Toluene <br />NA <br />NA <br />17,500 <br />230 <br />42 <br />Eth (benzene <br />NA <br />NA <br />1,840 <br />520 <br />29 <br />Xylenes I <br />NA <br />NA <br />15,300 <br />2,100 <br />17 <br />MTBE <br />NA <br />NA <br />40 - <br />NA <br />5 <br />TBA <br />NA <br />NA' <br />47,000 <br />NA <br />12 <br />1,2 -DCA <br />NA <br />NA <br />18 <br />2.1 <br />0.5 <br />Lead <br />NA <br />NA . <br />NA <br />NA <br />15 <br />PCE <br />NA <br />NA . <br />NA <br />NA <br />0.06 <br />TCE <br />NA <br />NA <br />NA, <br />NA <br />0.8 <br />NA Not Analyzed, Not Applicable or Data Not Available <br />Woo Water Quality Objectives <br />V. FREE PRODUCT: none identified <br />VI. SOIL AND GROUNDWATER REMEDIATION <br />A. Soil Excavation: 450 cubic yards of contaminated soil removed. <br />B. In -Situ Soil/ Groundwater Remediation: <br />• METHOD: soil vapor extraction and air sparging <br />• DURATION:Jun 00 through Dec 02 <br />• MASS OF HYDROCARBONS REMOVED: 1,000 pounds <br />ESTIMATE OF REMAING RESIDUAL MASS: 498 pounds of TPH-G <br />Ca/itornia En vironmental Protecdon Agency <br />oa Recycled Paper <br />