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SEQUOIA ANALYTICAL <br /> 680 Chesapeake DrW - Redwood City.CA 94063 <br /> (415)364-9600 - FAX(415) 364-9233 <br /> RE NA ClIam Project : 75.13.Weber Point <br /> 1710 Main Street <br /> E2cak k CA 96320 <br /> Aderttion: GM Stahl OC a Group: 2093870-2 Reposed: Se_p 30, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> ANAL IBM* <br /> BWMWW Toiusne ber=ne enee <br /> Method: EPA 9D2D EPA GM EPA e020 EPA SM <br /> Analyst- R Gadder FL Gadder R Gwiftr FL Geakfer <br /> Reporting Units PDX pg/L rq/L Yp/L <br /> Date Analyzed- Sep 2S. 1902 Sep 25, 1292 Sep A 1992 Sep 25, 1M2 <br /> OC Sample#: Geumazim GSLND02592 asUOMM GBL <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Cone: N D. N D. N D. MD <br /> Spike Cone. <br /> Added: 10 10 10 30 <br /> Cone, Matrix <br /> Spike: ID8 9.6 9.8 29 <br /> Matrix spike <br /> %Recovery: 98 98 96 97 <br /> Cone.Matrix <br /> Spike Dup.: 92 93 9.3 28 <br /> LUtr6z Spike <br /> Duplicate <br /> %Recovery- 92 93 93 93 <br /> Relative <br /> %Difference: 63 32 32 35 <br /> •SEQUOIA ANALY 1CAL %Fbaoveryr. Cons of S.- Is m at Sun x 100 <br /> C9Spike Conn.Added <br /> Poladae%DM venae Cone.of M.S.-CAM of LCM x 100 <br /> (Cone.at M + of M D)/2 <br /> eject Manager 2093=WET c2> <br /> £0 d ££Z6 b9£ stb=QI 31MA I` Nd ttlQf ads ZZ101 Z5-c0-01 <br />