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41 680 Chesapeake Drive Redwood Cary CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAx(707)792 0342 <br /> � Analytical <br /> Blaine Tech Services Inc Client Project iD Chevron 9-8264/ 980818-T1 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order # 9808910 -01 Reported Aug 31, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Phenol 2 Chlorophenol 1 4-Dichioro N-Nitroso-Di <br /> benzene N-propylamine <br /> OC Batch# MS0817988270EXA MS0817988270EXA MS0817988270EXA MS0817988270EXA <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst E Manuel E Manuel E Manuel E Manuel <br /> BS/BSD # 13LK081798 BLK081798 BLK081798 BLK081798 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 8/17/98 8/17/98 8/17/98 8/17/98 <br /> Analyzed Date 8/17/98 8/17/98 8/17/98 8/17/98 <br /> Instrument I D # F4 F4 F4 F4 <br /> Cone Spiked 100 pg/L 100 Ng/L 100 ps/L 100 ug/L <br /> Result 64 72 76 65 <br /> BS % Recovery 64 72 76 65 <br /> Dup Result 65 73 8D 68 <br /> BSD % Recov 65 73 80 68 <br /> RPD 16 14 51 45 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS # <br /> Prepared Date <br /> Analyzed Date <br /> Instrument I D # <br /> Cone Spiked <br /> LCS Result <br /> LCS % Recov <br /> LCS <br /> Control Limits 12-110 27-123 36-97 41-116 <br /> Please Note <br /> The LCS is a control sample of known Interferent-free matrix that is analyzed using the same reagents <br /> SEQUOIA A ALYTICAL 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 /> j gory **MS=Matrix Spike MSD=MS Duplicate RPO=Relative % Difference <br /> r t Manager Page 1 of 3 9808910 BLA <1> <br />