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Sequoia 680 Chesapeake Drive 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-%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> _......--r.....___ ._........ __ »..s—-- _ � -- _ �i __» �_...»..» » _.a»......._»»»�....ry—•^li___-_... �.x.....». ............��i i i--- �__—r...._»..........»....i».«_ <br /> Camkt <br /> bria » -+µ»� _-- Client Prol ID Shell 2525 Country,Stockton Sampled -10/29/97 <br /> k 270 Perkins Ave Sample Descript RW-(1A, 1A End)Comp Received 11/03/97 F <br /> _ Sonoma, CA 95476 Matrix LIQUID ES <br /> Analysis Method 8015Mod/8020 Analyzed 11/10/97 <br /> Attention .Joe Neel _ Lab Number s9711�157-02 ___ Reported 11 j1 V97 <br /> .. ..... r+ •»•,,•••••••••••---- iiixiiix-i:i x ...i <br /> .. xiixii»:" i.i x�i ill <br /> QC Batch Number-ddl l l097BTEX21A <br /> Instrument ID GCHP21 <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 . ... .... ...... . 50000 ..... ........... 56000 <br /> Methyl t-Butyl Ether ...... .......... . 2500 ...... ........... 220000 <br /> Benzene ....... .. . ... .. 500 ........ . ..... 6100 <br /> Toluene .... .. . .. ... .. 500 ... ... . .. 5900 <br /> Ethyl Benzene .. ... .... 500 ... ... .. ... 1100 <br /> Xylenes (Total) .. .. 500 ... . ...... 5800 <br /> Chromatogram Pattern* .. .... ... .. .. ... C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 99 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Zgf-- 0 <br /> gory <br /> Project Manager Page 3 <br /> rR <br />