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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364.9600 • FAX(415)364.9233 <br /> Waterwork Client Project ID: W0602.1C.City d Stockton-Barx>er Isiar�d O.C.Sample Dates <br /> 1710 Main Street Method(Lw"): EPA 8240 W/L PMW) <br /> Escaion,CA 95320 Analyst(t): G.Meyer Analyred: Apr 1, 1992 <br /> Anertion: sL Channell OC Sample#: VBLKD40192 Rued: Apr t,992 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Cone. Matrix Spike <br /> Cone. Spike Matrix Duplicate Relative <br /> Matrix x Spike x x <br /> Sample Spike Cont. Duplicate Recovery Difference <br /> Cont. Added Spike Recovery <br /> 1,1-0ichl oro- N.D. so <br /> 50 100 49 9e, 20 <br /> ethane so <br /> 50 100 47 94 62 <br /> Trichloroethene N.D. <br /> Benzene N.D. so <br /> 51 102 49 98 4.0 <br /> Toluene N.D. <br /> 104 50 1 Cb 3.9 <br /> so 52 <br /> S2 104 50 100 3.9 <br /> CNorobenzene N.D. <br /> J0 <br /> Cone.of M.S.• of SI a too <br /> SEQUOIA ANALYTICAL a'0Dr"Y ,CAM Add" <br /> "="', pNaON X 0lflt or tone.d M!s •Com.of M.S.r. a 100 <br /> OI M.S. • Of M.S.D.)72 <br /> 2033291.WAT 416> <br /> 4SVdL�Ma n a g W <br />