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Sequoia680 Chesapeake Drive Redwood City CA 94063 (650) 364%00 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 8T9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Upgradient Environmental Consultants Protect Conrady Sampled 7/6/98 <br /> 336 Augusta Court Project Number NIA Received 717198 <br /> VatleX Sp,CA 95252 Project Mana er Vic Cherven Reported 7/23/98 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> 1Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS(ggntlntiedl 80702Q9-BSI <br /> Ethylbenzene 7115/98 100 960 ug/l 700-130 960 <br /> Xylenes(total) 300 283 700-130 94 3 <br /> Surrogate a,a,a-Trifluorotoluene 100 937 600-140 93 7 <br /> Matrix Spike 9Q2Q209-MS1 S807061-01 <br /> Benzene 7/15/98 100 ND too ug/I 600-140 100 <br /> Toluene too ND 948 600-140 948 <br /> Ethylbenzene 100 ND 945 600-140 945 <br /> Xylenes(total) 300 ND 283 600-140 94 3 <br /> Surrogate a,a,a-Trifluorotoluene 100 932 600-140 93 2 <br /> Matrix Spike LIMp 8070209-MSD1 S807061-01 <br /> Benzene 7115/98 I 0 0 ND 101 ug/1 600-140 101 250 0 995 <br /> Olelucrk <br /> e 1. 100 ND 977 600-140 97 7 25 0 301 <br /> ,benzene 1, 100 ND 967 600-140 96 7 25 0 230 <br /> nes(total) 300 ND 289 600-140 963 250 210 <br /> Surrogate a,a a-Trifluorotoluene 100 908 600-140 908 <br /> A _ <br /> Mmuota Analytical-Sacramento *Refer to end of report jar text of notes and definitions <br /> #daCneider, Laboratory Director Page 8 of I 1 <br />