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1551 IndusMal(road <br /> Sequoia �'` ' � A0Z3Z-%1 <br /> (650)z3z-9600 <br /> M(650)23z-S*l Z <br /> Analytical www.sequolalabsCom <br /> GettyRyan/GeostratgpCs(1) Project Tosco(5) Sampled. 7/5/00 <br /> 6747 Sierra Court,Suite J Project Number Forme'UnocalSS#4409 Received. 7/5/00 <br /> Dublm,CA 94568 Project Manger Deanna Harding Re <br /> 19Fted 7/18/00 <br /> f Q <br /> b <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal Anal Level Result Result Units Reoov Lnnits % Lmnt % Notes' <br /> Batch 0070043 Date Prepared: 7112100 Extraction Meth • EPA 5030B IPM <br /> Blank 0070043-BLK1 <br /> 1,2-Dibromoedme 7/12/00 ND ug/l 2.00 <br /> 1,2-Dhchloroethane " ND 2.00 <br /> Di- py1 ether " ND " 2.00 <br /> Ethyl tent-butyl ether ND " 2.00 <br /> Methyl tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether ND " 2.00 <br /> Tert-bu1 alcohol " ND " 100 <br /> Surrogate. 1,2-Dichloroethane-d4 50 0 51 7 It 760-114 103 <br /> Surrogate Toluene-& 500 499 " 880-110 998 <br /> LCS 0070043-BSI <br /> Methyl tert-butyl ether 7/12/00 500 420 U94 700-130 940 <br /> Surrogate 42 Dichloroethane-d4 " 500 523 or 760-114 105 <br /> Surrogate Toluene-d8 500 528 " 880-110 106 <br /> Matrix Spike 0070043-MSI L007041-02 <br /> Methyl tert-butyl ether 7112100 500 ND 392 ug/l 600-140 78A <br /> Surrogate 1,2-Dichloroethane-& 500 524 " 760-114 105 <br /> Surrogate, Toluene-d8 Soo 498 880-110 996 <br /> Matrix Spike Dup 0070043-MSD1 L007041-02 <br /> Meth 1 test-butyl ether 7112/00 500 ND 397 ugn 600-140 79A 250 1.27 <br /> Surrogate 1,2 Dichloroethane d4 " Soo 528 " 760-114 106 <br /> Surrogate. Tolue=48 500 509 880-110 102 <br /> i <br /> i <br /> i <br /> Sequoia Analytical-San Carlos *Refer to end ofreport for teact of notes and definitions <br /> Page 10 of 11 <br />