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819 Striker Avenue, Suite 8 <br /> Sequoia Sacramento, CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> PEMCON/IT-Cameron Park Project IBC-Stockton Sampled 2125100 <br /> 3939 Cambridge Road,Ste 220 Project Number 792759/22605-101 003 Received 2/25100 <br /> Cameron Park,CA 95682 Project Manager Mark Capps Reported 3/7/00 <br /> Total Purgeable Hydrocarbons(C6-Cl2),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 /> Batch 0030063 Date Prepared 3/6100 Extraction Method EPA 5030B McO14 <br /> Blank 0030063-BLK1 <br /> Purgeable Hydrocarbons 3/6/00 ND ug/I 500 <br />' Benzene ND 0 500 Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a,a,a-Trzfl'uorotoluene 100 981 600-140 981 <br /> LCS 0030063-BSI <br /> Benzene 3/6/00 100 971 ug/1 700-130 97 1 <br /> Toluene 100 969 700-130 969 <br /> Ethylbenzene too 985 700-130 98 5 <br /> Xylenes(total) 300 294 700-130 98 0 <br /> thyl tert-butyl ether _ 100 8 45 700-130 84 5 <br />"qWrrogafe a a a-Triuorotoluene 100 904 600-140 904 <br /> Matrix Spike 0030063-MS1 5002345-04 <br /> Benzene 3/6/00 too ND 101 ug/l 600-140 101 <br /> Toluene t 0 0 ND too 600-140 t00 <br /> Ethylbenzene too ND 101 600-140 101 <br /> Xylenes(total) 300 ND 302 600-140 101 <br /> Methyl tent-butyl ether 100 ND__ 102 600-140 102 <br /> Surrogate a a a-Trifiuorotoluene 106 10 5 600-140 105 <br /> tMatrix Spike Dup 0030063-MSDI S002345-04 <br /> Benzene 316/00 100 ND 9 88 ug/l 600-140 98 8 250 220 <br /> Toluene 100 ND 9 87 600-140 987 25 0 131 <br /> Ethylbenzene " 100 ND 997 600-140 997 25 0 130 <br /> Xylenes(total) 300 ND 296 600-140 98 7 250 230 <br /> Methyl ter-t-butyl ether10 0 ND 969 600-140 969 250 513 <br /> Surrogate a,a,a-Tr¢fluorotoluene 100 100 600-140 100 <br /> ruoia Analytical-Sacramento *Refer to end of report for text ofnotes and defnatzons <br /> Page 3 of 4 <br />