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Quik Stop Station No 039 February 28,2000 Stockton California Subsurface Site Assessment ANALYTICAL RESULTS Soil Samples No detectable concentrations of TPHg, BTEX, or MTBE were reported in any of the soil samples submitted for analysts, including composite soil sample SP#1(A,B,C,D) No detectable concentrations of TPHd or TPHmo were reported in soil sample S-20-MWI A detectable concentration of TOG (535 parts per million [ppm]) was reported in soil sample S-20-MW1 The laboratory analytical results for the soil samples are summarized in Table 1 The laboratory analytical reports and Chain-of-Custody records for the soil samples are included in Appendix F Groundwater Samples. Detectable concentrations of TPHg were reported in the groundwater samples from wells MW-2 (610 parts per billion [ppb]) and MW-3 (360 ppb) Detectable concentrations of the . BTEX constituents ethylbenzene (2 7 ppb in MW-1) and total xylenes (0 50 ppb in MW-2 and 2 0 ppb in MW-3) were reported in the groundwater samples No detectable i concentrations of the fuel oxygenate MTBE were reported in any of the groundwater samples, and no detectable concentrations of TOG, TPHmo and TPHd were reported in the groundwater samples from well MW-1 The laboratory analytical results for the groundwater samples are summarized in Table 2 The laboratory analytical reports and Chain-of-Custody records for the groundwater samples are included in Appendix G Drill Cuttings No detectable concentrations of TPHg, BTEX, or MTBE were reported in composite soil sample SP#1(A,B,C,D) A detectable concentration of total lead (6 8 ppm) was reported in composite soil sample SP#1(A,B,C,D) Upon receipt of these analytical results, the approximately four cubic yards of soil cuttings was disposed of at the Sacramento County Landfill (aka Kiefer Landfill) located near Sloughhouse, California 7039-12 rpt 7 HORIZON ENVIRONMENTAL INC