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Sequoia <br />Analytical <br />`0 680 Chesapeake Drive Redwood City, CA 940NO (415) 364-9600 FAX (415) 364-9233 <br />404 N. Wiget Lane Walnut Creek, CA 94598 (510) 988.9600 FAX (510) 988-9673 <br />819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX (916) 921-0100 <br />Enviros <br />Client Proj. ID: Shell 3011 Benjamin Holt Dr. <br />Sampled: <br />10/09/96 = <br />-_ 270 Perkins Ave. <br />Sample Descript: SS2C <br />Received: <br />10/09/96 <br />Sonoma, CA 95476 <br />Matrix: SOLID <br />Extracted: <br />10/09/96 <br />Benzene <br />Analysis Method: 8015Mod/8020 <br />Analyzed: <br />10/10/96 <br />ANanfinn• Ina Naaly <br />LRh Numhec 9610570-n7 <br />ReDorted: <br />10/11 /96 ... <br />Instrument ID: GCHP18 <br />Analytes reported as N.D. were not present above the stated limit of detection. <br />SEQUOIA ANALYTICAL - ELAP #1210 <br />Mike Gregory <br />Project Manager <br />Page: a <br />Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />Analyte <br />Detection Limit <br />Sample Results <br />mg/Kg <br />mg/Kg <br />TPPH as Gas <br />.................... 50 .................... <br />410 <br />Benzene <br />0.25 <br />N.D. <br />Toluene <br />.................... 0.25 .................... <br />0.53 <br />Ethyl Benzene <br />.................... 0.25 .................... <br />0.34 <br />Xylenes (Total) <br />.................... 0.25 .................... <br />3.0 <br />Chromatogram Pattern: <br />.................... .................... <br />CS -C12 <br />Surrogates <br />Control Limits % <br />% Recovery <br />Trifluorotoluene <br />70 130 <br />85 <br />Analytes reported as N.D. were not present above the stated limit of detection. <br />SEQUOIA ANALYTICAL - ELAP #1210 <br />Mike Gregory <br />Project Manager <br />Page: a <br />