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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 / 980209-A2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San.Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9802713-01-03 Reported Mar 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 2,4-Dlnitro- Pentachloro- Pyrene <br /> toluene phenol <br /> OC Batch## M80213988270EXA MS0213988270EXA MS0213988270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 <br /> Analyst E Manuel E Manuel E Manuel <br /> MS/MSD# 980271301 980271301 980271301 <br /> Sample Conc NO NO ND <br /> Prepared Date 2/13/98 2/13/98 2/13/98 <br /> Analyzed Date 2/17/98 2/17/98 2/17/98 <br /> Instrument I.D # F4 F4 F4 <br /> Conc Spiked 200 ug/L 200 fug/L 200 ug/L <br /> Result 160 150 113 <br /> IVIS % Recovery so 75 57 <br /> 0 Dup Result 150 154 113 <br /> NISD %Recov 75 77 57 <br /> RPD 65 26 00 <br /> RPD Limit 0-30 0-30 0-30 <br /> LCS # LCS021398 LCS021398 LCS021398 <br /> Prepared Date 2/13/98 2/13/98 2/13/98 <br /> Analyzed Date 2/17/98 2/17/98 2/17/98 <br /> Instrument I D.# F4 F4 F4 <br /> Conc Spiked 200 fug/L 200 fug/L 200 fug/L <br /> LCS Result: 146 130 108 <br /> LCS%Recov.. 73 65 54 <br /> LCS <br /> Control Limits 24-96 9-103 26-127 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> QUOTA 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 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 /> eggy Penner MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> Project Manager Page 3 of 3 9802713 BLA <8 <br />