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30-0136-01 <br /> Table 1 <br /> Summary of Results of Ground Yater Sampling <br /> Former Mobil Oil Bulk Plant 03-343 <br /> 500 East Grantline Road, Tracy, California <br /> Concentrations in parts per billion (ppb) <br /> ocsxsasxxxx==sxx���x�=pxxsa=_asxas=comas=xzaxss�.:asasx:.zasasz=xsxxxmacsrzs=aaxasz=axaassx3 <br /> axa=asaxsaxs=sxs=_xaxas�^axaa= xxxa=eaaa=cmaxa=saaxx� Pb LAB <br /> WELL DATE OF CASING DEPTH GROUND TPH-D TPH-G B T E X FC <br /> ID SAMPLING/ ELEVATION TO WATER <br /> MONITORING HATER ELEVATION se=ars=soxxamexxx=ce�esxmxesx�mr�Fzs asxxz== <br /> Rx. <br /> =x=axx=aasxxsaca=xxsaaTasas=a-aaxxsaxaxas�xaxaa=saaxaascxasxx=cxaxas=axaaxza�-xsaneaaa=�Tasx�s�xa <br /> ----------------------------------------------------------------------------._..-.__._-----------.___------------------------•----------------------------- <br /> EXPLANATION OF ABBREVIATIONS: <br /> Pb- :Organic Lead <br /> TPH-D :Total Petroi.eum Hydrocarbons as Diesel ;Not Analyzed/Not Measured <br /> (EPA method 8015 modified) NA :Not Applicable/Mot Available <br /> TPH-G :Total Petroleum Hydrocarbons as Gasoline ND :Not Detected <br /> (EPA method 8015 modified) AFL :American Environmental Laboratories, Inc. <br /> B :Benzene (EPA method 8020 or 8240) CAL :Chromalab, Inc. <br /> T :Toluene (EPA method 8020 or 8240) PACE :Pace, Inc. <br /> E :Ethylbenzene (EPA method 8020 or 8240) SAL :Superior Analytical Laboratories, Inc. <br /> X ;Xylenes (EPA method 8020 or 8240) <br /> I <br /> FC meaningliform most pr(obabllee numberrd hof oorgani�smss per�100nm Poflwater). <br /> II Note: <br /> 1. Top of casing and ground water elevations prior to May 1991 are expressed as feet above mean sea level (NGVD-1929). <br /> 2. Top of casing elevations tied to a railroad spike set in island on the approximate centerline of East Grantline Road <br /> 19.5 feet west from the centerline of the railroad spur tracks by Wes Carpenter on May 7, 1991. <br /> 3. Fecal Coliform analyzed at Kennedy Jenks of San Francisco, California. <br /> * = fecal Coliform analyzed at Pacific Environmental Laboratory. <br /> ** = Elevated reporting Limits are due to the presence of a concentration of diesel fuel in this sample. <br /> *** = Does not match typical gasoline pattern. -------------- -"'" <br /> -•-----•---- -------------•------------------- <br /> ------------------.............------------------------------ <br /> - - <br /> II <br /> Page 3 <br /> O6-Mar-92 <br />