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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-96W FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (5 10) 988-9600 FAX (510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Services, Client Project ID: Chevron Miain,...e----Tech. '... 4'v-i"c-e...s','Inca c....... on 9-0557/961106-Hl <br /> .,:::-:985 Timothy Drive Matrix: Liquid <br /> San Jose, CA 95133 <br /> : <br /> .Attention: Jim Keller Work Order#: 9611305 01-05 ReportedNov 24, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Iron <br /> QC Batch#: ME1 1 1 8962008M2 <br /> Analy. Method: EPA 200-8 <br /> Prep. Method: EPA 200.8 <br /> Analyst- S.O'Donnell <br /> MS/MSD #: 961163101 <br /> Sample Conc.: 17 <br /> Prepared Date: 11/18/96 <br /> Analyzed Date: 11/18/96 <br /> Instrument I.D.#: MPE5 <br /> Conc. Spiked: 20 ug/L <br /> Result: 40 <br /> MS % Recovery: 115 <br /> • Dup. Result: 39 <br /> MSD % Recov.: 110 <br /> RPD: 2.5 <br /> RPD Limit: 0-20 <br /> X <br /> ff- <br /> F..X F. <br /> ff <br /> LCS #; BLK1 11896 <br /> Prepared Date: 11/18/96 <br /> Analyzed Date: 11/18/96 <br /> Instrument I.D.#: MPE5 <br /> Conc. Spiked: 50 ug/L <br /> LCS Result: 54 <br /> LCS % Recov.: 108 <br /> MS/MSD 80-120 <br /> LCS 80-120 <br /> Control Limits <br /> Please Note: <br /> 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 matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. H <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> ggy Penner <br /> SEQUOIA <br /> Manage MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9611305.BLA <1> <br />