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' Sequoia 680 Chesapeake Dave Redwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget 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 /> li <br /> Blame Tech Services « « Client Prol ID Shell Stockton/970822-J1 Sampled 08/22/97 , <br />�t 1680 Rogers Avenue Sample Descrlpt MW-4 Received 08/25/97 <br /> San Jose, CA 95112 Matrix LIQUID M <br /> i' Analysis Method 8015Mod/8020 Analyzed 08/27/97 „t <br /> Attention Fran Thee _ Lab Number 9708D32-04 Reported 09J04j97 M <br /> QC Batch Number GC082197BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether .... ... .... 2.5 ....... ........ .. 10 <br /> Benzene 050 ND <br /> Toluene 050 ND <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trefluorotoluene 70 130 98 <br /> • <br /> Analytes reported as N D ere not present above the stated limit of detection <br /> SEQUOI A ICAL - EIAP #1210 <br /> Peggy Penner <br /> Project Manager page 4 <br />