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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 9673 <br /> ,5)fwI>) Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> i <br />--......K..«.«.»....^.�.....^..�.�'.«..�...'...1111.:.W................i=....��......'t.......................�-1.....:.....tG..............i..1�--..........IL...� ..----.:.......... L•--I.�.K..:...i......�--�--S.....«.......:.f.�-L-i.t'..:.w...."'^�.........SI.i <br /> Enviros Client PD Shell 6131 Pacific, Stockton Sampled 09/16/97 roi II <br /> 270 Perkins Ave Sample Descript MW-5-55 5' Received 09/19/97 E <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/25/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/26/97 ; <br /> _Attention J Gaarder _ Lab Number 9709C09-06 _ Reported 10103/97 ON <br />�C Batch Number GCO92597BTEXEXB <br /> nstrument!D GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas . .................. 50 .. ................ 22 <br /> 0 46 <br /> Benzene .... .... . ........ 0 025 ..... <br /> Toluene ....... ........ .. 0.025 ... ........ 0.077 <br /> Ethyl Benzene . ........... .... 0.025 ... ............. 0.065 <br /> Xylenes (Total) .... ... 0 025 ............ .... 1.6 <br /> Chromatogram Pattern: ...... ..... ..... .. .. .... ......... C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 96 <br /> 4-Bromofiuorobenzene 60 140 140 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> M I egory <br /> Project Manager Page 18 <br />