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• 680 Chesapeake Drive Redwood City CA 94063 (650)364-96W FAX(650)364 9233 <br /> ` Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988 9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916►921 9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> tl <br /> } <br /> Pinnacle-C P Project ARCO 6020, Manteca,CA Sampled 5/20/99 <br /> 3939 Cambridge Road,Ste 220 Project Number N/A Received 5/20199 <br /> Cameron Park,CA 95682 Project Manager Joel Coffman Reported 6/4/99 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units __ Recov Limits " % Limit % Notes* <br /> HCS{fpntinu edT.) 9060069-BS] <br /> Ethylbcnzene 6/1/99 0200 0 219 mglkg 700-130 109 <br /> Xylenes(total) 0 600 0 591 700-130 985 <br /> Surrogate a,a a-Triuorotoluene 0200 0 196 600-140 98 0 <br /> Matrix Spike 4060069-MSI S905343-02 <br /> Benzene 6/1/99 0200 ND 0 194 mg/kg 600-140 97 0 <br /> Toluene 0200 ND 0 210 600-140 105 <br /> Ethylbenzene 0200 ND 0 210 600-140 105 <br /> Xylenes(total) 0 600 ND 0 574 600-140 957 <br /> Surrogate a,a,a-Triuorotoluene _ 0200 0196 _ 600-140 98 0 �+ <br /> Matrix Spike Dun 9060064-MSDI 5905343-02 <br /> Benzene 611199 0200 ND 0 190 mg/kg" 600-140 95 0 25 0 208 <br /> Toluene 0200 ND 0 195 600-140 975 25 0 7 41 <br /> -Ethylbenzene - 0200 ND 0205 600-140 102 25 0 290 <br /> Xylenes(total) 0 600 ND 0 560 600-140 933 25 0 2 54 <br /> Surrogate a,a a-TriJluorotoluene 0200 0 199 600-140 995 a <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> N <br /> Sequoia Analytical-Sacramento 'Refer to end ojreport for Text ojnotes and definrttorrs <br /> Ronald W Bobel,Client Services Rep esentative Page 6 of 9 <br />