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1 ` <br /> 680 Chesapeake Drive Redwood Ci <br /> Sequoia tY CA 94063 (650) 364 9600 FAX(650) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988 9600 FAX(925)988 9673 <br /> �-� <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792 1865 FAX(707) 792 0342 <br /> Emcon-Cameron Park Project Don Rogers <br /> 3939 Cambridge Road,Ste 202 Project Number 22613-100 003 Sampled 1 1/9/98 <br /> Reported 11/10/98 <br /> Cameron Park, CA 95682 <br /> Project Manager Mark Capps Reported 11/24/98 <br /> Total Purgeable Hydrocarbons(C6-Ci2),BTEX and MTBE 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 /> BA"—JU111125 Date Pr-cpared-1 1/12/99 <br /> Blank _ <br /> Purgeable Hydrocarbons 11/12/98 <br /> ND ug/l Soo <br /> Benzene <br /> Toluene <br /> ND 0 500 <br /> ND ' <br /> Ethylbenzene 0 500 <br /> Xylenes(total) ND 0 500 <br /> vlethyJ tort-butyl ether ND 0 500ND Soo <br /> surrogate aaa-Trnfuorotoluene 100 977 <br /> 60 0-140 977 <br /> ICS 8110135-R4 i <br /> 3enzene 11/12/98 100 9 93 ug/l 700-130 993 <br /> aluene 100 927 <br /> 11 <br /> thylbenzene 700-130 92 7 <br /> 0 100 921 700-E30 921 <br /> {total) 300 275 700-130 91 7 <br /> tort-butyl ether 100 8 37 70 0-E 30 83 7 <br /> urrogate a a a-Trrfluorotoluene JO 0 9 98 <br /> 60 0-140 998 <br /> WM-SPII& $10135-Alii S811154-I6 <br /> enzene 11/12/98 100 ND 10 3 u /1 <br /> g 600-140 <br /> aluene 103 <br /> 100 ND 9 78 60 0-140 97 8 <br /> hylbenzene 1 0 0 ND 963 600-140 963 <br /> ylenes(total) 300 ND 28 8 60 0-140 96 0 <br /> ethyl tert-butyl ether too ND 11 3 60 0-140 113 <br /> arrogate a a a-Trrfluorotoluene 100 940 <br /> 60 0-140 94 0 <br /> 8110135 MSDI 581115416 <br /> nzene 11/12/98 100 ND <br /> luene 975 ug/l 600-140 975 250 549 <br /> 100 ND 9 35 <br /> 1y[benzene 100 ND 923 60 0-140 93 5 25 0 4 50 <br /> lenes(total) 300 ND 277 600-140 923 250 4 24 thyl tett-butyl ether ]0 0 ND 758 60 0-140 923 250 3 93 <br /> 600-140-rogate a a a-Tr758 25 0 394 2 <br /> rfluorotofuene 10 0 9 I1 <br /> 60 0-140 9J 1 <br /> uola Analytical -Sacramento *Refer to end ofreport for text ofnotes and definitions <br /> ald W Bobel,Client Services Repreientative <br /> Page 4 of 6 <br />