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i <br /> Sequoia 819 Striker Avenue Suite 8 <br /> Sacramento, CA 95834 <br /> Analytical (916)921-9600 <br /> i <br /> FAX(916)921-0100 <br /> I <br /> I <br /> MCON/1T-Sacramento Project ARCO 2130, Stockton,CA <br /> 11433N Market Blvd,#I Sampled 11/29/99 <br /> ProjectNumber 792223 Received 11/30/99 <br /> cramento,CA 95834 Project Manager Dave Foley <br /> Reported I2/14/99 <br /> Total Pufgeable Hydrocarbons (C6-C1,2),BTEX grid MTBE by DHS LUFT/Quality Control <br /> Scyuota Aualytical-Sacramento <br /> I <br /> lAnalyte <br /> Date Spike Sample QC Reporting Limit Recov RPD RPDAnalyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9120060 Date Prepared 1211/99 <br /> Blank 9120060-13I,1•Ci Extraction Method EPA 50308 McOH <br /> Purgeable Hydrocarbons 12/1/99 ND <br /> Benzene ug/! 500 <br /> Toluene „ ND " 0 500 <br /> Ethylbenzene ND 0500 <br /> Xylenes(total) 0 500 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate a ax-Trifluoratoluene 100 ND 250 <br /> 9 S3 <br /> 600-140 953 <br /> LCS 9120060-BSI <br /> Benzene 12/1/99 100 <br /> Toluene 9 14 ug/1 700-130 91 4 <br /> 100 9 48 70 0-130 94 8 <br /> Ethylbenzene Too 942 ' <br /> Xylenes(total) 300 282 700-130 94 2 <br /> 70 0-130 94 0 <br /> thy/Cert-butyl ether 10 0 9 49 " <br /> gate a a,a-Trtfluororoluene 70 0-130 94 9 <br /> " 10 0 938 600-140 93 8 <br /> Matrix„Snike 9120060-MSI 5911288-01 <br /> Benzene 12/1/99 loo ND <br /> 9 44 9411 600-140 93 1 <br /> Toluene 1. 100 ND <br /> Ethylbenzene It 600-140 94 4 <br /> 100 ND 9 60 0-140 93 5 <br /> Xylenes(total) 300 ND 281 <br /> �� <br /> Mcthyl tert-butyl ether Mo ND 976 600-140 93 7 Surrogate a a,a-Trtfluorotoluene 10 D 9 55 60 0-140 976 <br /> 0-140 955 <br /> Matrix Spike Dup 9120060-MSD1 5911288-01 <br /> Benzene 12/1/99 100 <br /> Toluene ND 926 ugll 600-140 92 6 25 0 0 539 <br /> 10 0 ND 9 60 0-140 94 1 25 0 0 318 <br /> Ethylbenzene 10 0 ND 938 <br /> 3g ” <br /> Xylenes(total) 300 ND 28 1 600-140 93 8 250 0 320 Methyl Cert-butyl ether IO 0 ND 9 86 60 0-140 93 7 250 060 0-140 98 6 25 0 102 <br /> Surrogate a aa-Trti luorotoluene 100 947 <br /> 60 0-140 94 1 <br /> Batch 9120061 Date Prepared 12/6/99 Extraction Method EPA 5030BM <br /> BCank 9120061-BLK1 cOH <br /> Purgeable Hydrocarbons 12/6/99 ND ug/1 Soo <br /> Benzene <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0500 <br /> 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> S Analytical-Sacramento *Refer to end ofreport for text ofnotes and definition <br /> Page 6 of 9 <br />