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Sequoia680 Chesapeake Dnve Redwood City, CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 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) 921-9600 FAX(916)921 0100 <br /> W Enviros _ -�- -------- _ Client Prol ID -Shell :6:-:1-3-1--Pacific, Stockton Sampled- 07/02/97 ;" <br /> u' 270 Perkins Ave Sample Descript SB-4-71 5 Received 07/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/11/97 <br /> Analysis Method 8015Mod/8020 Analyzed 07/12/97 <br /> Attention Joe Neely Lab Number 9707310-15 _ - Reported 07j18j97 <br /> 0C Batch Number GC071197BTEXEXA <br /> Instrument ID GCHP16 <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 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene .. ..---..., 00050 ... ... . .. .. 00075 <br /> Toluene .. . . ......... .. 00050 ... .. . ... .... 0 029 <br /> Ethyl Benzene .. ... ..... .... 00050 .. .. 00081 <br /> Xylenes (Total) .. --- ... 0.0050 .... . ... . .. 0 049 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 81 <br /> 4-Bromofluorobenzene 60 140 102 <br /> 4 <br /> Anaiytes reported as N a were not present above the statee limit of detection <br /> e <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> G"rMana <br /> P�K Manager Page 15 <br />