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/A?S-=E <br /> GEOMATRIX <br /> TABLE 4 <br /> ANALYTICAL RESULTS FOR GROUNDWATER SAMPLES' <br /> Hanson Property <br /> 7750 Schulte Road <br /> Tracy, California <br /> Sample Concentration(µg/1)2 <br /> TW-14 <br /> SB-23(Grab <br /> Groundwater <br /> Constituent EPA Method Sample) June 1997 July 1997 <br /> Benzene 8020 <0.55 <0.5 <0.5 <br /> Toluene 8020 <0.5 <0.5 <0.5 <br /> Ethylbenzene 8020 <0.5 <0.5 <0.5 <br /> Total Xylenes 8020 <2 <2 <2 <br /> TPPH gasoline 8015M <50 <50 <50 <br /> TEPH diesel 8015M6 60 <50 <50 <br /> Acenaphthene 8310 <0.5 <0.50 <0.50 <br /> Acenaphthylene 8310 2 <1.0 <1.0 <br /> Anthracene 8310 <0.05 <0.050 <0.050 <br /> Benzo(a)anthracene 8310 <0.1 <0.10 <0.10 <br /> Benzo(a)pyrene 8310 0.4 <0.10 <0.10 <br /> Benzo(b)fluoranthene 8310 0.2 <0.10 <0.10 <br /> Benzo(g,h,i)perylene 8310 0.6 <0.10 <0.10 <br /> Benzo(k)fluoranthene 8310 <0.1 <0.10 <0.10 <br /> Chrysene 8310 0.1 <0.10 <0.10 <br /> Dibenzo(a,h)anthracene 8310 1 <0.20 <0.20 <br /> Fluoranthene 8310 0.4 <0.10 <0.10 <br /> Fluorene 8310 0.5 <0.10 <0.10 <br /> Indeno(1,2,3-c,d)pyrene 8310 <0.1 <0.10 <0.10 <br /> Naphthalene 8310 <0.5 <0.50 <0.50 <br /> Phenanthrene 8310 0.3 <0.050 <0.050 <br /> Pyrene 8310 <0.1 <0.10 <0.20 <br /> 1-Methylnaphthalene 8310 2 <0.30 <0.30 <br /> 2-Methylnaphthalene 1 8310 1 <0.3 <0.30 1 <0.30 <br /> Notes: <br /> I SB-2 grab groundwater sample collected on 21 March 1997 and TW-1 samples collected as noted. <br /> 2 Results reported in micrograms per liter(µg/1). <br /> 3 Analysis of SB-2 sample performed by American Environmental Network Laboratories(AEN). <br /> 4 Analysis of TW-1 samples performed by CLS Laboratories. <br /> 5 Less than sign(<)indicates constituent was not detected at a concentration equal to or greater than the <br /> reporting limit shown. <br /> 6 Silica gel cleanup of extract(based on EPA Method 3630M)prior to TEPH analysis. <br /> 1:\W PDGCS\409TTAB LE-4.DOC <br />