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• <br /> Results <br /> The analytical laboratory report is attached. Petroleum hydrocarbons were <br /> detected at 11 ppm (part per million), 1 ppm above the reporting limit of <br /> 10 ppm. Benzene, toluene, and xylene concentrations were below reporting <br /> limits. A table of results follows: <br /> Parameter Result, ppm <br /> Benzene BRL <br /> Toluene BRL <br /> Xylpe BRI. <br /> TPH as Diesel 11 <br /> TPH as Total I1 <br /> * BRL: Below reporting limits <br /> * TPH: Total petroleum hydrocarbon <br /> Limitations <br /> This work was conducted in general accordance with the accepted standard <br /> of care which exists in Northern California at the time the investigation <br /> was performed. It should be recognized that definition and evaluation of <br /> geologic conditions is a difficult and inexact art. Judgments leading to <br /> conclusions and recommendations are generally made with an incomplete <br /> knowledge of the subsurface conditions present. More extensive studies <br /> including additional subsurface investigation may reduce the inherent <br /> uncertainties associated with subsurface modeling. If the client wishes <br /> to reduce the uncertainty beyond the level associated with this study, <br /> Kleinfelder should be notified for additional consultation. <br /> Sincerely, <br /> KLEINFEL.DER <br /> Gregory <br /> P. Fletcher <br /> Staff Hydrogeologist <br /> a_ z-�- �9 <br /> David0. Cook, P.E. <br /> Project Engineer <br /> Environmental Services Division <br /> Central Valley Group <br /> i <br /> GPF:DOC:cc <br /> 87-56-567 <br /> KI FINFFI MR 9795 RusinP5S Paris Drive. Suite C. Sarramentn rA 95827 19161 366-1701 <br />