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Sequoia 819StrikerAvenue Suite <br /> 1 Sacramento CA 95834 <br /> (916)921-9600 <br /> AAnalytical FAX equ alabs921 c 00 <br /> nalytical www sequoialabs com <br /> Gettler-Ryan-Rancho Cordova Project Tosco 6981, Stockton, CA Sampled 4126/00 <br /> 3164 Gold Camp Dr,Ste 240 Project Number NIA Received 4127/00 <br /> Rancho Cordova,CA 95670 Project Manager Mike Mltchener Reported 511, 11/00 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFTIQuahty Control <br /> Sequoia Analytical-Sacramento <br /> i <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued) 0050027-BLK1 <br /> Surrogate a a,a-Trefluorotoluene 512100 0200 0 177 mg/kg 600-140 885 <br /> LCS 0050027-BSI <br /> Benzene 512/00 0200 0 192 mg/kg 700-130 960 <br /> Toluene " 0200 0202 700-130 101 <br /> Ethylbenzene 0200 0208 700-130 104 <br /> Xylenes(total) 0 600 0 575 700-130 95 8 <br /> Methyl tert-butyl ether 0200 0 176 700-130 880 <br /> ate a,a <br /> Surrogate ./1 a-Tri uorotoluene 0200 0179 600-140 89 5 <br /> Matrix Spike 0050027-MSI S004402-01 <br /> Benzene 512100 0200 ND 0 160 mg/kg 600-140 $00 <br /> Toluene 0200 ND 0 169 600-140 845 <br /> Etiftrizene 0200 ND 0 179 600-140 895 <br /> X (total) 0 600 ND 0 504 600-140 840 <br /> Methyl tert-butyl ether 0200 ND 0 140 600-140 700 <br /> Surrogate a a a-Trifluorotoluene 0200 0 185 600-140 925 <br /> Matrix Spike Duo 0050027-MSDI 5004402-01 <br /> Benzene 512100 0200 ND 0 153 mg/kg 600-140 765 250 447 <br /> Toluene 0200 ND 0 162 600-140 810 25 0 423 <br /> Ethylbenzene 0200 ND 0 171 600-140 85 5 250 4 57 <br /> Xylenes(total) 0 600 ND 0 488 600-140 813 250 327 <br /> Methyl tert-butyl ether 0200 ND 0 130 600-140 65 0 250 741 <br /> Surrogate a,a,a-Trrfluorotoluene 0200 0 185 600-140 925 <br /> Batch 0050065 Date Prepared 513100 Extraction Method EPA 50306 McOII <br /> Blank 0050065-BLKI <br /> Purgeable Hydrocarbons 5/3/00 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 0176 600-140 88 0 <br /> LCS 0050065-BS1 <br /> Benzene 513/00 0200 0 184 mg/kg 700-130 92 0 <br /> Toluene 0200 0 194 700-130 970 <br /> Ethylbenzene 0200 0 198 700-130 990 <br /> XvJmmw(total) 0 600 0 553 700-130 922 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 12 of 16 <br />