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i <br /> � I <br /> Chevron Products Company 3 <br /> • II <br /> Chevron Station 49-2396 25650 Highway 99 North Acam n California lu1 12 2001 <br /> I� <br /> Groundwater Analytical Results. Groundwater samples were <br /> submitted to a California state-certified laboratory and analyzed foi the <br /> presence of. purgeable hydrocarbons (i.e. TPHg), BTEX, fuel <br /> oxygenates and total lead.: <br /> The laboratory reported toluene was present in groundwater samples <br /> .i from SB-1 and SB-3 at concentrations of 0.893 �ig/L and 0.617 pg/L; <br /> respectively. The laboratory also reported xylenes concentrations in <br /> h groundwater from SB-1 and SB-3 at concentrations of 1.48 µg/L and <br /> 1.17 µg/L, respectively, and MtBE at 13.0 µg/l, in the groundwater <br /> collected from S13-1. Groundwater analytical results are tabulated ori <br /> ii <br /> Table 1. <br /> it <br /> • Domestic Well Analytical Results. The on-site domestic well was <br /> sampled by first stressing the well by running water inside the station <br /> 13 <br /> building. When the well cycled on, water samples were collected from <br /> a valve at the wellhead. The domestic well analytical results were <br /> below laboratory detection limits for all constituents tested. Analytical <br /> results are reported in Table 1. Certified analytical reports and chain- f <br /> of-custody documentation are presented as Attachment C. <br /> SUMMARY OF FINDINGS <br /> • Observations and measurements collected during drilling and logging three soil <br /> 0 <br /> borings did not reveal the presence of fuel hydrocarbon impacts to soils <br /> encountered in SB-1 through SB-3. <br /> i, • Soil samples from SB-1 through SB-3 contained no chemical constituents <br /> j detectable by the laboratory.' <br /> 'j Groundwater samples from boring SB-1, near the formed UST complex, and SB- <br /> 3, near the existing pump islands, were reported to contain low-level of toluene in <br /> Esamples from two borings ranging from 0.617 to 0.893 ug/L. Low-level xylenes <br /> were reported from groundwater samples collected from these two borings <br /> E� ranging from 1.17 to 1.48 ug/L. A single detection of MtBE in the groundwater <br /> �+ sample from SB-1 was reported by the laboratory at 13.0 pg/L. . <br /> • Domestic water samples contained no chemical constituents detectable by the <br /> laboratory. <br /> 1 <br /> 1 <br /> {, I:1Chevron1923961Reports\July 2001 Site Assessment Report.doc <br />