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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc V Y Client Project ID Chevron 9-2033 /970821V-F3 <br /> 1880 Rogers Ave Matrix Liquid <br /> 'San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9708D46-01 Reported Sep 10, 1997, <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Phenol 2-Chlorophenol 1,4-Dichloro- N-Nitroso-Di- <br /> benzene N-propylamine <br /> CC Batch# MS0827978270EXA MS0827978270EXA MS0827978270EXA MS0827978270EXA <br /> Analy. Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Prep Method EPA 3510 EPA 3510 EPA 3510 EPA 3510 <br /> Analyst B Pitamah B Pitamah B Pitamah B Pitamah <br /> MS/MSD #. WB082797 WBOB2797 WBO82797 WBO82797 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Analyzed Date 8/27/97 8/27/97 8/27/97 8/27/97 <br /> Instrument I D # F4 F4 F4 F4 <br /> Cone. Spiked 200 pg/L 200 ug/L 200Ng/L 200 Ng/L <br /> Result 66 119 103 144 <br /> MS % Recovery 33 60 52 72 <br /> Dup Result 73 129 107 147 <br /> MSD %Recov,- 37 65 54 74 <br /> RPD: 10 81 38 21 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS # WB082897 WBO82897 WBO82897 WBO82897 <br /> Prepared Date: 8/28/97 8/28/97 8/28/97 8/28/97 <br /> Analyzed Date 8/29/97 8/29/97 8/29/97 8/29/97 <br /> Instrument I D #. F4 F4 F4 F4 <br /> Cone Spiked 200 pg/L 200 pg/L 200lrg/L 200 pg/L <br /> LCS Result 71 140 122 154 <br /> LCS %Recov .. 36 70 61 77 <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 /> ;Pr <br /> 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 /> y ner *MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> ct Manager Page 1 of 3 970BD46 BLA <7> <br />