Laserfiche WebLink
4� <br /> GEOMATRIX <br /> TABLE A-2 <br /> GRAB GROUNDWATER ANALYTICAL RESULTS[ <br /> Surland Homes Property <br /> Tracy, California <br /> Results reported in micrograms per liter(µg/1) <br /> TPHII TPHd <br /> Sample Date without with Ethyl- <br /> ID Collected TPHg Filtering Filtering Benzene Toluene benzene Xylenes PAHs 10 <br /> GBI 7/8/98 7202 _3 5202 <0.5 0.7 1.6 5.4 Acenaphthene 1.3 <br /> Fluorene 3.4 <br /> Pyrene 0.3 <br /> Chrysene 0.2 <br /> Naphthalene 4.84 <br /> Phenanthrene 2.54 <br /> PGB4 7/8/98 <50 140 <50 <0.5 <0.5 0.9 5.1 <0.15 <br /> GBS71 7/8/98 <50 <50 <50 <0.5 <0.5 <0.5 0.5 <0.15 <br /> Notes: - <br /> Samples collected by Geomatrix and analyzed by Friedman and Bmya,Inc.,for total petroleum hydrocarbons quantified as <br /> gasoline(TPHg;C6-Cl2)using EPA Method 8015M;for total petroleum hydrocarbons quantified as diesel(TPHd;CIO- <br /> C24)using EPA Method 8015M following laboratory filtering and silica gel cleanup using EPA Method 3630;for benzene, <br /> toluene,ethylbenzene,and xylenes using EPA Method 802113;and for polynuclear aromatic hydrocarbons(PAHs)using <br /> EPA Method 8270 SIM. <br /> 2 These reported TPHg and TPHd"detections"are likely the result of petroleum-affected soil particulates (<0.7 microns <br /> in size for TPHd analysis)entrained in the water sample,based on the similarity between the soil and water sample <br /> chromatograms for GB-1. <br /> GB 1 was not analyzed without filtering due to sample breakage. <br /> 4 Naphthalene(0.2µg/1)and phenanthrene(0.2 µg/1)detected in method blank;actual concentration may be slightly <br /> lower than detected concentration due to laboratory contamination. <br /> s Naphthalene and phenanthrene detected in samples and in laboratory method blank at similar concentrations; <br /> these results likely are due to laboratory contamination and are therefore not reported. <br /> I:\lW—SAFE\4780.01\Appendix A.xls <br />