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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)921 0100 <br /> Blaine Tech Seances, Inc Client Project ID Chevron 9-8264%970521-H3 <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9705C27-01 Reported Jun 9, 1997 <br /> r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,2,4-Tnchiero- 4-Chloro-3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> OC Batch# MS0528978270EXA MS0528978270EXA MS0528978270EXA MS0528978270EXA <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 #. 970568604 970SB8604 9705BB604 9705B8604 <br /> Sample Cone - N D ND N D N D <br /> Prepared Date 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Analyzed Date- 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Instrument I D # H5 H5 H5 H5 <br /> Cone Spiked. 200 jug/L 200pg/L 200 ug/L 200 pg/L <br /> Result 149 163 134 59 <br />. MS % Recovery. 75 82 67 30 <br /> Dup Result: 159 183 143 76 <br /> MSD % Recov .. 80 92 72 38 <br /> RPD 65 12 65 25 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS #- WBOS2897 WBO52897 WBO52897 WB052897 <br /> Prepared Date- 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Analyzed Date 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Instrument I D # H5 H5 H5 H5 <br /> Cone Spiked 200ug/L 200 ug/L 200pg/L 200 ug/L <br /> LCS Result- 115 131 110 58 <br /> LCS % Recov .. 58 66 65 29 <br /> LCS <br /> Control Limits 39.98 23-97 46-118 10-80 <br /> Please Note <br /> The LCS is a control sample of known,Interferent-free matrix that is analyzed using the same reagents, <br />. SE ALLYTICAL 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 n '*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> SJ <br /> an Page 2 of 3 9705C27 BLA `8> <br />