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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-%00 FAX(415) 364-9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(510)686.9689 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> : !'inf'r f:lD ':: >'0939-004.08::» >::>::::>:::<::<:::>::>:<:::>;:»::::>:::<:::> »::»<:::>::>;<:................................................................... <br /> .............................. e t o ec <br /> 1 <br /> 1433 N. Market Blvd. Matrix: Water <br /> Sacramento, CA 95834 <br /> > Attention: Jim Pittilla OC Sample Group: 411-1118 Reported: Dec 6, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Hexavalent <br /> Chromium <br /> Method: EPA 7196 <br /> Analyst: V.Owens <br /> Concentration <br /> Spiked: 0.050 mg/L <br /> LCS Batch#: LCS112994 <br /> Date Prepared: 11/29/94 <br /> Date Analyzed: 11/29/94 <br /> Instrument I.D.#: UV Spec 1 <br /> LCS % <br /> Recovery: 94 <br /> Control Limits: 80-120 <br /> MS/MSD <br /> Batch#: 4111118 <br /> Date Prepared: 11/29/94 <br /> Date Analyzed: 11/29/94 <br /> Instrument I.D.#: w spec 1 <br /> Matrix Spike <br /> %Recovery: 98 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 96 <br /> Relative% <br /> Difference: 2.1 <br /> Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> QUOIA ANALYTICAL preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results. <br /> t t Jl /1 ,fes <br /> Linda C. S hneider �f <br /> Project Manager <br /> 4111118.EMC <2> <br />