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Sequoia <br />`/ 680 Chesapeake Drive Redwood City, CA 94&00 <br />(415) 364.9600 <br />(510) 988-9600 <br />FAX (415) 364.9233 <br />FAX (510) 988-9673 <br />404 N. Wiget Lane Walnut Creek, CA 94598 <br />� —Analytical <br />819 Striker Avenue, Suite 8 Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />;::- .::.. <br />11 Benjamin min Holt <br />Client Prol.ID Shell 30 <br />Sampled: <br />/ /Enviros <br />270 Perkins Ave. <br />Sample Descript: SS2B <br />Matrix: SOLID <br />Received: <br />Extracted: <br />10/09/96 <br />10/09/96 <br />€] Sonoma, CA 95476 <br />- <br />s <br />Analysis Method: 8015Mod/8020 <br />Analyzed: <br />10/10/96 <br />Attention: Joe Neel _....__Lab._Number;..._9610570-06 <br />--- -.... - .... _.Y_ ::::.:::::::::::: ............. <br />::::::::::::::::::::::::::::::::--.::::::::::::::::::......::::::::::::::::::::: <br />- <br />€€iES <br />—._ ...............::.:...::: <br />::::::s::::;°:_ :_: :::,_ <br />::Reported:tOf71:- <br />:_.:::_-_:mm <br />:..._:::_.:_:::::-......: <br />€':isisi <br />QC Batch Number: GC100996BTEXEXC <br />Instrument ID: GCHP22 <br />Total Purgeable Petroleum Hydrocarbons (TPPH) <br />with BTEX <br />Analyte <br />Detection Limit <br />Sample Results <br />mg/Kg <br />mg/Kg <br />TPPH as Gas <br />............... 1.0 .................... <br />0.0050 <br />1.4 <br />N.D. <br />Benzene <br />Toluene <br />0.0050 <br />N.D. <br />Ethyl Benzene <br />0.0050 <br />N.D. <br />Xylenes (Total) <br />................... 0.0050 .................... <br />0.012 <br />Chromatogram Pattern: <br />.................... .................... <br />C9 -C12 <br />Surrogates <br />Control Limits % <br />% Recovery <br />Trifluorotoluene <br />70 130 <br />81 <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: 7 <br />