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Se uOla 680 Chesapeake Drive Redwood City, CA 94063 (4 15) 364-9600 FAX (415) 364-9233 <br /> 404 N. Wigel Lane Walnut Creek, CA 94598 (SID) 988.9600 FAX (510) 9'8-9673 <br /> Analytical 819 striker Avenue,Suite 8 Sacramento, CA '95834 (916) 921.9600 FAX (916)921-DIDO <br /> Sherwood Labs Corporation CiientProject ID• Paylsss Lumber <br /> 8071 N. Lander Ave. Matrix: Water - <br /> Hilmar, CA 95324 <br /> Attention: Tim McDonald QC Sample Group 7081147j <br /> Reported: Sep 11, 1997: <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE i <br /> MTBE j <br /> Method: EPA 8260 <br /> Analyst: M.Williams <br /> Concentration <br /> Spiked: 50ug/L ! <br /> LCS Batch#: LCS090897 <br /> Date Prepared: 09/08/97 <br /> Date Analyzed: 09/08/97 <br /> Instrument I.D.#: F3 <br /> LCS % <br /> t <br /> Recovery: 95 <br /> Control Limits: 70.130 i <br /> } <br /> MS/MSD <br /> Batch #: 970902005 <br /> Date Prepared: 09/08/97 <br /> Date Analyzed: 09/08/97 <br /> Instrument I.D.#: F3 <br /> Matrix Spike <br /> % Recovery: 92 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 94 <br /> Relative % <br /> Difference: 2.2 <br /> SEQ 17 IA ANALYTICAL Please Note: <br /> The LCS is a control sample of knowh,interferent free matrix that is analyzed using the same reagents, <br /> /in�da <br /> / /' preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> �L�( L'` JC- � G validation of sample batch resi lts. Due to matrix effects,the QC limits for MS/MSD`sare advisory only <br /> C. Schneider and are not used to accept or reject batch results. <br /> t Manager/Sacramento Laboratory <br /> 7081147.SLC <2> <br /> 1 <br />