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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> JW,,,,� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Pacific Environmental Group Client Prol ID 311-174 1A/BP 5447, Stockton Sampled 02/04/98 <br />' 2025 Gateway Place, Suite 440 Sample Descript GT1-A Received 02/05/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/06/98 <br /> Analysis Method 8015Mod/8020 Analyzed 02/06/98 <br /> Attention Jessica Nelligan Lab Number 9802211-03 Reported 03J30198 <br />' OC Batch Number GCO20698BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />' Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br />' TPPH as Gas 10 180 <br /> Methyl t-Butyl Ether 025 43 <br /> Benzene 0 050 N D <br /> Toluene 0 050 0 64 <br /> Ethyl Benzene 0 050 080 <br /> Xylenes (Total) 0 050 1 8 <br /> Chromatogram Pattern GAS <br /> Gas& Unidentified HC +>C10 <br />' Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 74 <br /> 0 4Bromolluorobenzene 60 140 11 Q <br /> 1 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br />' SEQUOIA ANALYTICAL - ELAP #1210 <br /> Granicher <br /> 0ject Manager Page 7 <br />