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Sequoia <br />.wo <br />680 Chesapeake Drive <br />Redwood City, CA 94063/ <br />(415) 364-9600 <br />FAX (415) 364-9233 <br />Sample Descript: SS1A/(A-D) comp <br />404 N. Wiget Lane <br />819 Striker Avenue, Suite 8 <br />Walnut Creek, CA 94598 <br />Sacramento, CA 95834 <br />(510) 988-9600 <br />(916) 921-9600 <br />FAX (510) 986-9673 <br />FAX (916) 921-0100 <br />vQpAnalytical <br />10/09/96 <br />Analysis Method: 8015Mod/8020 <br />Analyzed: <br />Enviros <br />client Proj. ID: Shell 3011 Benjamin Holt Dr. <br />Sampled: <br />10/09/96 = <br />270 Perkins Ave. <br />Sample Descript: SS1A/(A-D) comp <br />Received: <br />10/09/96 -_ <br />€i Sonoma, CA 95476 <br />Matrix: SOLID <br />Extracted: <br />10/09/96 <br />Analysis Method: 8015Mod/8020 <br />Analyzed: <br />10/10/96 <br />1:1 Attention.. Joe Neely <br />LabNumber: 9610570-01 . <br />........ <br />.. <br />p��L�6 <br />/......::.l <br />..... <br />QC Batch Number: GC100996BTEXEXC <br />Instrument ID: GCHP22 <br />Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />Analyte <br />Detection Limit <br />Sample <br />Results <br />mg/Kg <br />mg/Kg <br />TPPH as Gas <br />1.0 <br />N.D. <br />Benzene <br />0.0050 <br />N.D. <br />Toluene <br />0.0050 <br />N.D. <br />Ethyl Benzene <br />0.0050 <br />N.D. <br />Xylenes (Total) <br />0.0050 <br />N.D. <br />Chromatogram Pattern: <br />Surrogates <br />Control Limits % <br />% Recovery <br />Trifluorotoluene <br />70 130 <br />78 <br />Analytes reported as N.D. were not present above the stated limit of detection. <br />SEQUOIA ANALYTICAL - ELAP #1210 <br />Mike regory <br />Project Manager <br />Page: 2 <br />