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Ms. Michelle Stecrd—Le <br /> Project 225-01-01, Page 2 <br /> Sample Analysis Results <br /> All soil samples were analyzed at a State Certified Environmental Laboratory, <br /> McCampbell Analyt�',� , of Paceco, California (#1644) for Total Petroleum S <br /> Hydrocarbons as diY(TPH,` ), and benzene, toluene, ethylbenzene, xylenes (BTEX) � q <br /> by EPA methods 8015 modified/8020. The samples were also analyzed for Methyl-tert <br /> Butyl Ether (MTBE) using the Central Valley RWQCB recommended method of EPA <br /> 8260 for Fuel Oxygenates. (Attachment A: Soil Sample Analytical Data). <br /> The soil sample analysis showed all samples with detectable amounts of TPH as <br /> gasoline as well as all constituents of Benzene,Ethylbenzene, Toluene, and Xylenes. <br /> MTBE and other oxygenates were detected in all samples. Sample results are presented <br /> in the tables below. <br /> Soil Sample Analytical Results, TPH-g and BTEX <br /> California Stop <br /> 2224 Manthy Road, Stockton, California <br /> Sampled on January 10, 2002 <br /> Sample TPH-g benzene toluene ethylbenzene xylenes <br /> 1 @ 2-2.5' 10,000 3.4 340 230 1300 <br /> 2 @ 0.5-1' 3400 17 150 49 230 <br /> 3 @ 2-2.5' 770 ND<0.03 0.64 ND<0.03 ND<0.05 <br /> 4 @ 2-2.5' 3500 ND<0.30 10 38 270 <br /> det. limit 1.0 0.005 0.005 0.005 0.005 <br /> Results are in mg/kg or parts per million (ppm). ND=not detected at or above method detection limits. <br /> Soil Sample Analytical Results, MTBE and other Oxygenates* <br /> California Stop <br /> 2224 Manthy Road, Stockton, California <br /> Sampled on January 10, 2002 <br /> Sample DIPE ETBE MTBE TAME tert-Butanol <br /> 1 @ 2-2.5' ND<1000 ND<1000 45,000 2000 ND<5000 <br /> 2 @ 0.5-1' ND<5000 ND<5000 340,000 15,000 ND<25,000 <br /> 3 @ 2-2.5' ND<1000 ND<1000 ND<1000 ND<1000 ND<5000 <br /> 4 @ 2-2.5' ND<1000 ND<1000 4700 ND<1000 ND<5000 <br /> det. limit 5.0 5.0 5.0 5.0 25 <br /> Via EPA Method 8260. Results are in}pg/kg or parts per billion(ppb). ND=not detected at or above <br /> method detection limits. <br /> Parker Environmental Services, 190 East 7th Street, Pittsburg, CA 94565-2317 <br /> Phone(925)439-1024 Fax (925)439-2566 <br />