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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> CD 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> IIo Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> Cambria Client Proi ID Shell 2575 Country Club Blvd Sampled 12/09/97 <br /> 270 Perkins Ave Sample Descript MW-12-A2 Received 12/11/97 <br /> Sonoma, CA 95476 Matrix LIQUID Extracted 12/19/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/22/97 <br /> Attention Joe Neely Lab Number 9712705-02 Reported 12130/97 <br /> QC Batch Number GC121997BTEXEXA <br /> Instrument ID GCHP1 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas .. .. 1.0 ... 12 <br /> Benzene 0.0050 0 019 <br /> Toluene 00050 014 <br /> Ethyl Benzene 00050 0 048 <br /> Xylenes (Total) 00050 039 <br /> Chromatogram Pattern C&C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 105 <br /> 4-Bromofluorobenzene 60 140 74 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A YTICAL - ELAP #1210 <br /> e gory <br /> Project Manager Page 3 <br />