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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (9 16)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequoia€abs com <br /> Stratus Environmental Project Arco 2130, Stockton,CA Sampled 6/26/00 <br /> 3330 Cameron Park Drive,Ste 550 Project Number NIA Received 6/27/00 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 7/13/00 <br /> 71 - ' _Volatile Organic Compounds by EPA„Method k60A/Qitallty Control, 4” L,/ <br /> 9e 1101a Anal tical-"Walnut CreejCr <br /> IT h N —,:"9.9 ..�.6...,,._�— � J a <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued) 0G07019-BLK1 <br /> Methyl tert-butyl ether 7/7100 ND ug/1 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 <br /> Surrogate Dibromofluoromethane 500 520 50-150 104 <br /> Surrogate 1,2-Dzchloroethane-d4 500 470 50-150 940 <br /> Blank 0G07019-BLK2 <br /> tert-Butyl alcohol 7/10/00 ND ug/1 100 <br /> Methyl tert-butyl ether " ND 1. 20 <br /> Di-isopropyl ether ND " 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether NO 20 <br /> rrogate Dibromofluoromethane 500 Soo 50-150 100 <br /> agate 12-Dzchloroethane-d4 500 460 50-150 920 <br /> LCS 0G07019-B S 1 <br /> _Methyl tert-butyl ether 7/7/00 500 466 ug/1 70-130 932 <br /> Surrogate Dibromofluoromethane 500 520 50-150 104 <br /> Surrogate 12-Dzchloroethane-d4 500 480 50-150 960 <br /> LCS OG07019-BS2 <br /> Methyl tert-butyl ether 7/10/00 500 516 ugll 70-130 103 <br /> Surrogate Dibromofluoromethane IF 500 490 F, 50-150 980 <br /> Surrogate 1 2-Dzchloroethane-d4 IF500 450 50-150 900 <br /> Matrix Spike 0G07019-MS1 5006356-07 <br /> Methyl tert-butyl ether 7/8/00 500 ND 562 ug/l 60-150 112 <br /> Surrogate Dibromofluoromethane 1, 500 510 IF 50-150 102 <br /> Surrogate 1 2-Dichloroethane-d4 11500 470 ey 50-150 940 <br /> Matrix Spike Dup 0G07019-MSD1 5006356-07 <br /> Methyl tert-butyl ether 7/8/00 500 ND 578 ug/1 60-150 116 25 281 <br /> Surrogate Dibromofluoromethane 500 520 1150-150 104 <br /> Surrogate 1,2-Dzch1oroethane-d4 Soo 470 IF <br /> 50-150 940 <br /> g _ <br /> uola Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 10 of 11 <br />