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a} � <br /> 885 Jarvis Drive <br /> 4 Sequoia Morgan hill CA 95037 <br /> (408) 776-9600 <br /> ,!D <br /> Analytical FAX(408) 782-6308 <br /> Wa7in—eTech Services(Shell) Project Equiva Sampled 10/13/99 <br /> 1680 Rogers Avenue Project Number 1071 N Main Street Received 10/14/99 <br /> San Jose,CA 95112 Project Manager Leah Davis Reported 10/29/99 <br /> .Y y mss. Volatile Organic Oxygenated Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical_San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike(COn$nRggJ _ 9100121-MS1 M910637-02 <br /> Surrogate 1 2-Dichloroethane-d4 10122199 500 514 u9/1 760-114 103 <br /> Matrix Spike Dup 9100121-MSD1 M910637-02 <br /> Methyl tert-_butyl ether 10_/22/99 500 _ ND -_- 475 ug/l - -- 600-140 950 250 0211 <br /> Surrogate 1 2-Dichloroethane-d4 500 525 760-114 105 <br /> Batch 9100124 Date Prepared 10/25/99 Extraction Method EPA 5030B IP/T1 <br /> Blank 9100124-BLKI <br /> Ethanol 10/25/99 ND ug/l 500 <br /> 'Pert-butyl alcohol ND 100 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-buryl ether ND 200 <br /> Tert-am 1 methyl ether ND _ _ _ _ 200 _ <br /> Surrogate 12-Dichloroethane-d4 500 524 760-114 105 <br /> Qank 9100124-BLK2 <br /> Ethanol 10/25/99 ND ug/1 500 <br /> Tert-butyl alcohol ND 100 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether --- --- _ND " --— _200 <br /> Surrogate 12-Dichloroethane-d4 500 539 760-114 108 <br /> LCS 9100124-BSI <br /> Methyl_tert-butyl ether_ — 10/25/_9_9 _ 500------ <br /> _47 4 ug/l 700-130 948 <br /> Surrogate 1 2-Dichloroethane-d4 500 5 e 4 760-114 103 <br /> LCS 9100124-BS2 <br /> Methyl te_rt-_butyl ether _ _ _ _10/25/99 500 _ 513 _ug/l 700-_130___ 10_3 <br /> Surrogate 1 2-Dichloroethane-d4 — 11 500 55 4 760-114 111 <br /> Matrix Spike 9100124-MS1 L910182-02 <br /> Methyl tert-butyl ether _10/25/99 500 _ ND 47 8 _ug/l — 600-140 95_6 <br /> Surrogate 1 2-Dichloroethane-d4 11 500 544 760-114 109 <br /> Matrix Spike Dun 9100124-MSD1 L910182-02 <br /> Methyl tert-butyl ether 10/25/99 Soo — ND 477 ug/1 _ 600-140 954 25 0 0 209 <br /> Surrogate 1 2-Dichloroethane-d4 500 53 2� 760-114 106 <br /> uoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 16 of 17 <br />