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/9� GEOMATR1X The soil and groundwater samples were submitted to Friedman and Bruya,Inc.,of Seattle, Washington,a California-certified analytical laboratory,under Geomatrix chain-of-custody procedures. Soil samples were submitted for analysis for total petroleum hydrocarbons(TPH) quantified as gasoline(IPHg;C6-C12 carbon range),diesel(1PHd;C3U-C24carbon range),and crude Oil(FPHC;C8-C36 carbon range)by U.S.Environmental Protection Agency(EPA)Method 8015 Modified;for benzene,toluene,ethylbenzene,and xylenes(BTEX),and methyl tertiary butyl ether (MTBE)by EPA Method 8260B;and for polynuclear aromatic hydrocarbons(PAHs)by EPA Method 8270 SIM. In addition,the soil samples collected from borings GMX-6 and GMX-13 were submitted for a forensic evaluation. The groundwater sample was submitted for analysis for BTEX and MTBE by EPA Method 8260B and for PAHS by EPA Method 8270 SIM. Following collection of the soil and groundwater samples,the boreholes were backfilled with cement grout. Per a request from Mike Indiana,an inspector with the SJCPHS,the boreholes were grouted to approximately 3 feet bgs to accommodate future grading activities on the site. 4.0 ANALYTICAL RESULTS TPHc was detected in five of the 11 soil samples analyzed(GMX-2,3,6,7,and 13)at concentrations up to 18,000 milligrams per kilogram(mg/kg). TPHd was detected in seven soil samples(GMX-1, 23 314,65 75 and 13)at concentrations up to 6800 mg/kg. TPHg was detected in four soil samples (GMX-2,6,7,and 13)at concentrations up to 1000 mg/kg. Based on review of the chromatograms, it appears that these samples are affected by a mixture of degraded crude oil and gasoline. It is nuclearif any diesel is present or if the TPHd result is simply a portion of the crude oil boiling range. Benzene was not detected in any of the soil samples. Toluene,ethylbenzene,and xylenes were either not detected or were detected sporadically at low concentrations in these soil samples;MTBE was not detected in any of the soil samples. Low concentrations of several PAHs were detected in the soil samples from GMX-2 and GMX-13. Soil analytical results are summarized in Table I and on Figure 2. The forensic evaluation of the soil sample collected from boring GMX-6 indicated the petroleum hydrocarbons present in the sample likely represent degraded low boiling range(such as gasoline) and high boiling range(such as crude oil)compounds. The forensic evaluation of the soil sample collected from boring GMX-13 indicated that the petroleum hydrocarbons present in the sample were primarily degraded low boiling range(such as gasoline)compounds. A complete forensic evaluation is presented in Appendix B. \l F3\ UMATA\DOC SAFE15WS0 650\ MOWM-SOM. W-T .DOC 3