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Se Ola 680 Chesapeake Drive Redwood City,CA 94t (415) 364-9604 FAX(415)364-9233 <br /> 41► 1 404 N.Wiget lane Walnut Creek,CA 94598 (g10) 988-9600 FAX(510)988-9673 <br /> Analytical S19 Striker Avenue,Suite 8 Sacramento,CA 95834 (91[6) 921-9600 FAX(916)921-0100 <br /> i <br /> l_uhdor[f&Scalmanini 'Client Project D: 94-1022]7eichert Vernalis <br /> 500 First St. Matrix: Water <br /> Woodland, CA 95695 <br /> . Schadt QC Sample Group: 605025&60 ... <br /> Attention Leese p p: Reported: May 15, 1996:;- <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Alkalinity <br /> Method: EPA 310.1 <br /> Analyst: S.Phillips <br /> Concentration <br /> Spiked: 27 mg/L <br /> s <br /> LCS Batch#: LCS051396 <br /> P` <br /> Date Prepared: 05/13/96 <br /> Date Analyzed: 05/13/96 <br /> Instrument I.D.#: pH-1 <br /> LCS % <br /> Recovery: 93 <br /> Control Limits: 60-120 <br /> MS/MSD <br /> Batch #: 6050861 <br /> Date Prepared: 055/13/96 <br /> Date Analyzed: 05/13/96 <br /> Instrument I.D.#: pH-1 <br /> f' Matrix Spike <br /> Oya Recovery: 92 <br /> Matrix Spike <br /> Duplicate% <br /> a Recovery: 96 <br /> a �* <br /> Relative % <br /> Difference: 4.3 <br /> l Please Note: <br /> y The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA 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 QC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results. <br /> (/in C. Schneider <br /> ct Manager/Sacramento Laboratory <br /> �� 6050258.1-1.11-1 <4> <br />