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• ' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N,Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX (510) 988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX (916) 911.0100 <br /> Blaine Tech Services, Inc. Client Project 113: Chevron 9-0557/970227-Hl <br /> 1680 Rogers Avenue Matrix: Liquid <br /> San Jose, CA 95112 <br /> ..:Attention: Fran Thie Work Order#: 9702F02-01-07 Reported Mar 17 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Phosphorus Nitrate Sulfate <br /> QC Batch#: IN022897365200B IN0228973000ACB IN0305973000ACB <br /> Analy. Method: EPA 365.2 I=PA 300.0 EPA 300.0 <br /> Prep. Method: NA NA NA <br /> Analyst: T, McMahon S. Fong S.Fong <br /> MS/MSD#: 9702FO201 9702/36303 9702FO207 <br /> Sample Cone.: 0.099 8.1 35 <br /> Prepared Date: 2/28/97 2/28/97 3/5/97 <br /> Analyzed Date: 2/28/97 3/1/97 3/5/97 <br /> Instrument I.D.#: Manual INIC2 INIC2 <br /> Cone. Spiked: 0.25 mg/L 10 mg/L 10 mg/L <br /> Result: 0.32 19 45 <br /> MS%Recovery: 88 109 100 <br /> Dup. Result: 0.32 19 45 <br /> MSD % Recov.: 88 109 100 <br /> RPD: 0.0 0.0 0.0 <br /> RPD Limit: 0-20 0-20 0-20 <br /> n. <br /> LCS#: BLK022897 BLK022897 BLK030597 <br /> Prepared Date: 2/28/97 2/28/97 3/5/97 <br /> Analyzed Date: 2/28/97 2/28/97 3/5/97 <br /> Instrument 11.104: Manual INIC2 INIC2 <br /> Cone. Spiked: 0.25 mg/L 10 mg/L 10 mg/L <br /> LCS Result: 0.24 10 10 <br /> LCS % Recov.: 96 100 100 <br /> 75-125 75-125 75-125 <br /> LCS 80-120 90-110 90-110 <br /> Control Ll <br /> Please Note: <br /> TbwtCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br />. OIA A ALYTICAL eparation,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. If <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 /> e enner <br /> r ject Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9702F02.BLA <2n <br />