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4 �.. Sequoia 680 Chesapeake Drive Redwood City,C4 94063 (650) 364-9600 FAX(650)364-9233 <br /> '"Y' 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 92t-9600 FAX(916)921.0100 <br /> 1 <br /> _. ...._..---------......_..---._._..__..._..._.._.._._.__..... ma. <br /> .................. :::.: ..._._i._._........_ <br /> :: ::: :-:_:_-::::_::::::- ......._...::•::: :::::::-:::::::...._..........................,,.W...,..,..,...,.........._.......n2uninn <br /> -...... _.................__ :--._.... ........ <br /> _........_...-.._................. <br /> r = E=nvirosClient Proj. ID: Shell Stockton Sampled: 10/28/97 <br /> µ270 Perkins Ave. Sample Descdpt: SB-2-35.5 Received: 10/28/97 <br /> Sonoma, CA 95476Matnx: SOLID Extracted: 11/03/97 <br /> Analysis Method: 8015Mod/8020 Analyzed: 11/04/97 L <br /> Attention:Tom Magnet'-------.__._.._.._.._Lab Number:-971OH60-04 — __ ___ Reported: 11/0 97 <br /> OC Batch Number: GC110397BTEXEXA <br /> Instrument ID: GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg m9/KS <br /> TPPH as Gas .................... 1000 .................... 5700 <br /> Benzene 5.0 N.D. <br /> Toluene .................... 6.0 .................... 83 <br /> Ethyl Benzene .................... 5.0 .................... 72 <br /> Xylenes (Total) .................... 5.0 .................... 440 <br /> Chromatogram Pattern: .................... C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene '70 130 1570 <br /> 4-Bromofluorobenzene 60 140 2000 Q <br /> I <br /> i <br /> I . <br /> r <br /> I <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> tSEQUOIA ANALYTICAL ELAP #1210 <br /> k <br /> ' r g <br /> Project Manager Page: a <br /> ,. 17" } <br />