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819 Striker Avenue Suite 8 <br /> 1 Sequoia Sacramento C 95834 <br /> (916)922 1-9600 <br /> 4FAX(916)921-0100 <br /> Analytical www sequolalabs com <br /> Delta Environmental Consultants Project Arco 6080,Lathrop,CA Sampled 6/12/00 <br /> 3164 Gold Camp Drive, Ste 200 Project Number NIA Received 6113/00 <br /> Rancho Cordova, CA 95670 Project Manager Jay Johnson Reported 6/26100 <br /> T6ta1 Purgeable Hydrocarbons(C6-C12), 3TEX'and'MTBE by DHS EUFT/Quality Cont 61' <br /> Sequoia Analytical Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyle Analyzed Level Result Result Units Recov Limits % Lima % Notes* <br /> Batch 0060151 Date Prepared 6115100 Extraction Method EPA 5030B(MeOH <br /> Blank 0060151-BLK1 <br /> Purgeable Hydrocarbons 6/15100 ND mg/kg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 — <br /> Surrogate a,a,a-Trifluorotoluene 0200 0 183 600-140 915 <br /> LCS 0060151-BSI <br /> Benzene 6115/00 0200 0 181 mg/kg 700-130 905 <br /> Toluene 0200 0 188 700-130 940 <br /> FA&enzene " 0200 0 188 700-130 940 <br /> es(total) 0 600 0 528 700-130 880 <br /> Methyl tert-butyl ether 0200 0 165 700-130 825 <br /> Surrogate a,a,a-Trtfluorotoluene 0200 0 190 600-140 950 <br /> Matrix Spike 0060151-MS1 5006136-08 <br /> Benzene 6115/00 0200 ND 0 162 mg/kg 600-140 810 <br /> Toluene 0200 ND 0 161 600-140 805 <br /> Ethylbenzene 0200 ND 0 170 600-140 85 0 <br /> Xylenes(total) 0 600 ND 0 471 600-140 785 <br /> Methyl tert-butyl ether 0200 ND 0 144 600-140 72 0 <br /> Surrogate a,a a-Trtfluorotoluene 0200 0195 600-140 975 <br /> Matrix Spike_Dup 0060151-MSD1 S006136-08 <br /> Benzene 6115100 0200 ND 0 164 mg/kg 600-140 82 0 25 0 123 <br /> Toluene 0200 ND 0 170 600-140 850 25 0 544 <br /> Ethylbenzene 0200 ND 0 172 600-140 860 25 0 1 17 <br /> Xylenes(total) 0 600 ND 0 494 600-140 823 25 0 473 <br /> Methyl tert-butyl ether 0200 ND 0 147 600-140 73 5 25 0 206 <br /> Surrogate a a,a-Triuorotoluene H0200 0197 600-140 985 <br /> Batch 0060157 Date Prepared 6115100 Extraction Method EPA 5030B(MeOIb <br /> Blank 0060157-BLK1 <br /> Purgeable Hydrocarbons 6115100 ND mglkg 100 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> 0es(total) " ND " 000500 <br /> r1 tent-butyl ether ND 00500 <br /> Sequoia Analytical- Sacramento *Refer to end ofreport for text of notes and definitions <br /> p Page 7 of l 1 <br />