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' 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Sinker Avenue Suit,8 SacraML[ItO CA 95834 (916) 921 9600 FAX 1916) 921 0100 <br /> ' Pacific Environmental Group-Sac Pr41ect Chevron 1001621,Banta,CA Sampled 5/27198 <br /> 11315 Sunrise Gold Circle St M Project Number 920 002 2D Received 5/27/98 <br /> ' Rancho Cordova,CA 95742 Project Manager Chris Brown Reported 6/22/98 <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 /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> ' LC 5(continued) 8060060-BSI <br /> Ethylbenzene 6/3/98 10 0 10 1 u8/1 700-130 101 <br /> Xylenes(total) " 30 0 303 700-130 101 <br /> ' Surrogate a a a-Tnfluorotoluene if100 967 600-140 96 7 <br /> l"I 51)[1, 8060060-1%151 5805310-08 <br /> Benzene 6/3/98 100 ND 103 ug/l 600-140 103 <br /> ' Toluene " l0 0 ND 101 " 600-140 101 <br /> Ethylbenzene 10 0 ND 9 83 600-140 983 <br /> Xylenes(total) 300 ND 293 600-140 977 <br /> ' Surrogate a a a-Trifluorotoluene 100 9 72 600-140 972 <br /> Matrix Spike n 8060060-MSDI S805310-08 <br /> 0tehylberizene <br /> nzene 6/3198 100 ND 105 ug/l 600-140 105 25 0 1 92 <br /> luene 10 0 ND 102 600-140 102 25 0 0985 10 0 ND 994 600-140 994 25 0 1 11 <br /> Xylenes(total) 300 ND 297 600-140 990 25 0 1 32 <br /> ' Surrogate a a a-Trifluorotoluene 100 9 17 600-140 91 7 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and defirritions <br /> ML da C Schneider Laboratory Director Page 7 of 10 <br />