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Sequoia <br />Analytical <br />V400 680 Chesapeake Drive Redwood City, CA 946,No (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 />.... . . . ............ <br />Enviros <br />Client Pro). ID: Shell 3011 Benjamin of Dr. <br />Sampled: 10/09/96 <br />270 Perkins Ave. <br />Sample Descript: SS3A/(A-D) comp <br />Received: 10/09/96 1, <br />Sonoma, CA 95476 <br />Matrix: SOLID <br />Extracted: 10/09/96 <br />Analysis Method: 8015Mod/8020 <br />Analyzed: 10/10/96 <br />Attention: Joe Ne@!Y. .. <br />Lab Number: 9610570-09 <br />..... ............ ............. <br />4 <br />. ......... . ........................................... - .. .............. ........................... <br />R ed: 1 QJ . ........ . <br />.... ......... ......... pp .1.11 <br />........ . . .............. . <br />.................. . . — <br />. .. . .. ........................ . <br />QC Batch Number: GC100996BTEXEXC <br />............. ............................ ......................... nu— <br />.............. ................ ................ NNn: <br />nz=i ` ............. --- ........... <br />.. ......... <br />...... ........................................ .............. <br />Instrument ID: GCHP22 <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 />.................... 1.0 .................... <br />4.5 <br />Benzene <br />0.0050 <br />N.D. <br />Toluene <br />.................... 0.0050 .................... <br />0.0084 <br />Ethyl Benzene <br />.................... 0.0050 .................... <br />0.0076 <br />Xylenes (Total) <br />.................... 0.0050 .................... <br />0.11 <br />Chromatogram Pattern: <br />.................... .................... <br />C8 -C12 <br />Surrogates <br />Control Limits % <br />% Recovery <br />Trifluorotoluene <br />70 130 <br />61 <br />Analytes reported as N.D. were not present above the stated limit of detection. <br />SEQUOIA ANALYTICAL - ELAP #1210 <br />Mike reg Cry <br />Project Manager <br />—r,D <br />Page 10 <br />