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Sequoia 680 Chesapeake Dnve 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 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech'Senrices, Inc Client Project ID Chevron 9-2033 /970519-1-12 <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 Reported Jun 4, 1997 <br /> Attention Fran Thie Work Order# 9705B57-01 P <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,2,4-Tnchloro- 4-Chloro-3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> QC Batch# MS0528978270EXA MS0528978270EXA MS0528978270EXA M50528978270EXA <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 Pdamah B Pitamah B Pitamah <br /> MS/MSD # 9705158604 970568604 9705BB604 9705BDB604 <br /> Sample Cone N D N D N° <br /> Prepared Date 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Analyzed Date 5/26/97 5/28/97 5/28/97 5/28/87 <br /> instrument I D # H5 H5 H5 H5 <br /> Cone Spiked 200 pg/L 200 ug/L 20oN9/L 200pg/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 030 0-30 0-30 0-30 <br /> LCS#. WB052897 WBOS2897 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 200 jag/L 200 ug/L 200 Mg/L 200 pg/L <br /> LCS Result 115 131 110 58 <br /> LCS % Recov 58 66 55 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 /> 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 H <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 /> eg enner **MS= Spike,MSD=MS Duphcate,RPD=Relative%Difference <br /> ect Manager Page 2 of 3 9705657 15LA �7>7Pr <br /> > <br />