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Sequoia 680 Chesapeake Drive Redwood GM CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 41-1404 N Iget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> i <br /> Touchstone Developments Client Prol ID Chevron 9-826-4 _ Sampled 11/13/95 <br /> P O Box 2554 Sample Descript TX3-6' Received 11/14/95 <br /> Santa Rosa, CA 95405 Matrix SOLID Extracted 11/15/95 <br /> Analysis Method 8015Mod/8020 Analyzed 11/15/95 <br /> Attention ,teff Monroe Lab Number 9511A10-05 _ - Reported 11(22/95 <br /> QC Batch Number GC1 1 1595BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 106 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> r <br /> Mark Cargasaccht <br /> Protect Manager Page 11 <br />• <br /> i <br /> i <br />