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4D Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 989 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Touchstone Developments Client Prot ID Chevron 9-2033, 2033-2 Sampled 11/11/96 <br /> O Box 2554 Sample Descript A41 Received 11/12/96 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/13/96 <br /> Analysis Method 8015Mod/8020 Analyzed 11/13/96 <br /> Attention Jeff Monroe Lab Number 9611596-12 Reported 11J14196 <br /> C Batch Number GC1 1 1396BTEXEXA <br /> strument ID GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> T PPH as Gas 1 0 N D <br /> Aethyl t-Butyl Ether 0 025 N D <br /> 3enzene 00050 N D <br /> Toluene 00050 N D <br />=thyl Benzene 00050 N D <br />{ylenes (Total) 00050 N D <br />,hromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> frifluorotoluene 70 130 75 <br /> • <br /> alytes reported as N D were not present above the stated limit of detection <br /> iEQUOIA NALYTICAL - ELAP #1210 <br /> IV 11 lett <br /> oject Manager Page 12 <br /> r9% <br />