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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9133 <br /> 404 N.Wigol 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)921-0100 <br /> .......... <br /> ....... ....... <br /> �-.arrlbrla Client Project ID: Shell 1267 Country Club Blvd <br /> 270 Perkins Ave. Matrix: Solid <br /> ",'.,::Sonoma, CA 95476 <br /> Joe Neely Work Order#: 9802D58 -01-06 Reported. Mar 10, 1998,:`.- <br /> ........... <br /> ................................................... ............ <br /> ................ <br /> ................. ...... <br /> ...... ............ <br /> .......... ...... .. .. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Diesel <br /> QC Batch#: GCO225980HBPE)(r, <br /> Analy. Method: EPA 8015M <br /> Prep. Method: EPA 3550 <br /> Analyst: A.Porter <br /> MS/MSD#: 9802D5803 j. <br /> Sample Conc.: N.D. ri <br /> Prepared Date: 2/25/98 <br /> Analyzed Date: 2/25/98 T <br /> Instrument I.D.#: GGHP4 <br /> Conc. Spiked: 25 mg/Kg <br /> Result: 18 ll <br /> MS % Recovery: 72 <br /> Dup. Result: 20 <br /> MSD % Recov.: so <br /> -RPD: 11 <br /> RPD Limit: 0-50 <br /> .. ......... ........... <br /> ........... <br /> .......... J <br /> .. ... ....... . <br /> LCS#; BLK022598 <br /> Prepared Date: 2/25/98 <br /> Analyzed Date: 2/25/98 <br /> Instrument I.D.#: GCHP4 <br /> Conc. Spiked: 25 mg/Kg <br /> LCS Result: 19 <br /> LCS % Recov.: 76 <br /> MS/MlSD 50-150 <br /> LCS 60-140 <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 anaiyticil methods employed for the samples. The matrix spike is an aliquot of sample <br /> V, <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 /> o <br /> interference,the LCS recovery is to be used to validate the batch. <br /> reg <br /> See9ry <br /> Frio <br /> r ject Manager MS=Matrix Spike,MSD=MS Dupli 6ate,RP D=Relative%Difference 9802D58.CCC <1> ' <br /> t7� <br />