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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Pacific Environmental Group-Sac Project Chevron I001621,Banta,CA Sampled 5/26/98 <br /> 113 15 Sunrise Gold Circle St M Project Number 920 002 2D Received 5/26/98 <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 RPA RPD <br /> [Analyte Analyzed Level Result Result pmts Recov Limits % Limit % Notes* <br /> LCS(continued) 8060044-BSI <br /> Ethylbenzene 6/2/98 100 918 ug/l 700-130 918 <br /> Xylenes(total) 300 273 700-130 91 0 <br /> ' Surrogate a,a,a-Trifluorotoluene 100 980 600-140 98 0 <br /> Matrix 54il.e 8060044-MSI 5805276-05 <br /> Benzene 6/2/98 100 ND 987 ug/l 600-140 987 <br /> Toluene 100 ND 924 600-140 924 <br /> Ethylbenzene 100 ND 922 600-140 92 2 <br /> Xylenes(total) 300 ND 274 600-140 91 3 <br /> Surrogate a,a,a-Tris luorotoluene 100 964 600-140 964 <br /> Matrix Spike Dun - b805276-05 <br /> Benzene 6/2/98 10 0 ND 106 ug/I 600-140 106 250 7 13 <br /> puene " 10 0 ND 9 85 600-140 985 25 0 639 <br /> ylbenzene 10 0 ND 971 600-140 97 1 250 518 <br /> Xylenes(total) 300 ND 28 8 600-140 960 25 0 5 02 <br /> ' Surrogate a a a-Trifluorotoluene 10 0 912 600-140 912 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> �/� nda C Schneider,Laboratory Director Page 8 of 10 <br />