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Sequoia680 Chesapeake Drive Redwood City,C4 94063 (650) 364 9600 FAX(650)364-923300 <br /> ID <br /> 404 N W9get[ane Walnut Creek,CA 94598 (510) 988 96FAX(510)988-9673 <br /> IAnalytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Bnviros - Client Proi ID Shell"613 Pacific, Stockton " m Sampled 09/16%97 <br /> 270 Perkins Ave Sample Descript MW-4-61' Received 09/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/25/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/29/97 <br /> Attention_J Gaarder __ Lab Number 9709CA9-02 _ _ __ Reported 10/03/97 <br /> C Batch Number GC 9925 77BTEXEXB <br /> nstrument ID GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPHas Gas .................. . 2.5 ............. ...... 4.7 <br /> Benzene .... . ........... 0.012 ................... 0.63 <br /> Toluene ........... ........ 0 012 ........ 0.76 <br /> Ethyl Benzene ... . ....... .. 0 012 ..... ........... .. 0 085 <br /> Xylenes (Total) ..... . ...... .... 0.012 .... ............... 0.30 <br /> Chromatogram Pattern. . . ... . ......... .............. ..... C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluens 70 130 88 <br /> 4-Bromofluorobenzene 60 140 90 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIAANA YTICAL - ELAP #1210 <br /> Mik ego <br /> Project Manager Page 6 <br />