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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANALYSIS <br /> Tuesday,June 15 2004 <br /> Attention Rita Koehnen <br /> Port of Stockton Report Page 4 of 14 <br /> P O Box 2089 <br /> Stockton, CA 95201-2089 <br /> Total Petroleum Hydrocarbons-Gasoline <br /> Sample Information <br /> Sample ID MW 3-2 Sample Type. Grab <br /> Laboratory ID, 0401800-02 Project Name Port of Stockton UST Site No 3 <br /> Date/Time Sampled 21-May-04 14 28 by Jim Neal Sample Matrix Ground Water-Non Potable <br /> Test Parameter Result DLR Unit Dilution Bauch Prepared Analysis Date Method Notes <br /> f TPH Gasoline 842 100 ug/1 1 AF41505 27-May-04 27-May-04 LUFT GClMS <br /> Surrogate 4-Bromofluombenzene 104% 75-125 <br /> 0 <br /> ntg L-milligrams per Lrter-ppm DLR-Dereciron Limit for Purpose of Reponing <br /> ug L-micrograms perbter-ppb Exceptional sample matrices or interferences may <br /> result to higher detection limns <br /> 1OECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> n-r • r t r r r r r rr rl 1 n � rr • n-•.r n r i'.n n .-i.-r n.n� r� ..-.n., ..., ., ., <br />