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Submission # 2003-07-0190 STL T •Metals GEOCON Consultants, Inc Attn Matt Hanko - 2356 Research drive e Livermore, CA 94550 Phone (925) 371-5900 Fax (925) 371-5915 Protect 8643-06-01 Received 07/03/2003 12 40 , Ranch Market Batch QC Re ort Prep(s) 3010A Test(s) 6010E I I Laboratory Control Spike Water QC Batch#2003/07108-0515 LCS 2003107108-05 15-042 Extracted 07/08/2003 Analyzed 07/09/2003 10 26 , LCSD 2003107/08-05 15-043 Extracted 07/08/2003 Analyzed 07109/2003 10 30 Compound Conc mglL Exp Conc Recovery% RPD Ctrl Limits % Flags ' LCS LCSD LCS' LCSD % Rec RPD LCS LCSD Antimony 0 512 0 503 0 500 1024 1006 1 8 80-120 20 Arsenic 0 514 0 505 0 500- - 1028 1010 1 8 80-120 20 Barium 0 516 0 506 0 500. 1032 1012 20 80-120 20 Beryllium 0 514 0 509 0 500 1028 1018 10 80-120 20 ~ Cadmium 0 514 0 504 0 500 1028 1008 20 80-120 20 Chromium 0 514 0 505 0 500 1028 1010 18 80-120 20 Cobalt 0 522 0 512 0 500 1044 1024 1 9 80-120 20 ' Copper 0 519 0 510 0 500 1038 1020 17 80-120, , 20 - =T Lead 0 519= 0 507 -0 500� 103 8� 101-4= 2 3= 80-120 =20= -- -- Molybdenum 0 518 0 507 0 500 1036 1014 2 1 80-120 20 - -- - - ----- Nickel----- - 0 517== 0 508-_- - 0 500= =103 4=- =101 6— =1 8= 80-120 - 20= -_ - - - Selenium 0 502 0 487 0 500 1004 974 30 80-120 20 -- . - Silver---- =-- -_ - -=- 0520--- 0511=- - 0 500 -- -1040= -1022- -1-7- 80-120 20_ -- - - -- - Thallium 0 512 0 496 0 500 1024 992 32 80-120 20 Vanadium 0 523 0 513 0 500 1046 1026 1 9 80-120 20 Zinc 0 537 0 517 0 500 1074 1034 38 80-120 20 Calcium 516 510 500 103 2' 1020 12 80-120 20 Magnesium 517 505 500 1034 1010 23 80-120 20 ' Iron 516 509 500 1032 1018 14 80-120 20 Aluminum 1502 1495 500 11004 1990 1 4 80-120 24 Severn Trent Laboratories, Inc 071221201)3 110 STL San Francisco' 1220 Quarry Lane Pleasanton CA 94566 A part of Severn FrenaPIC Tel 925 494 1919 Fax 925 484 1096'www stl-inc corn`CA OHS ELAP#2496 Page 7 of e