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„+ Sequoia 680 Chesapeake Dnve Redwood GM CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 41) 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 Services, Inc Client Project ID Chevron 9-2033 /961125-A1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9611 H98-01 Reported Dec 11, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: 1,2,4-Trichloro- 4-Chloro-3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> QC Batch# MS1202968270EXZ MS1202968270EXZ MS1202968270EXZ MS1202968270EXZ <br /> Analy Method EPA 8270 EPA 8270 EPA 8270 EPA 8270 <br /> Pre Method EPA 3520 EPA 3520 EPA 3520 EPA 3520 <br /> Analyst E Manuel E Manuel E Manuel E Manuel <br /> MS/MSD# 9611H4901 9611H4901 96111-14901 96111-14901 <br /> Sample Conc N D N D N D N D <br /> Prepared Date 12/2/96 12/2/96 12/2/96 12/2/96 <br /> Analyzed Date 12/6/96 12/6/96 12/6/96 12/6/96 <br /> Instrument I D # F4 F4 F4 F4 <br /> Conc Spiked 200 ug/L 200Ng/L 2DOug/L 200 pg/L <br /> Result 169 165 152 162 <br /> MS % Recovery 85 83 76 81 <br />• Dup Result 178 173 161 175 <br /> MSD % Recov : 89 87 81 88 <br /> RPD 52 47 58 77 <br /> RPD Limit 0-30 030 0-30 0-30 <br /> LCS # CB120296 CB120296 CB 120296 CB120296 <br /> Analyst B Pitamah B Pitamah B Pitamah S Pitamah <br /> Prepared Date 12/2/96 12/2/96 12/2/96 12/2/96 <br /> Analyzed Date 12/4/96 12/4/96 12/4/96 12/4/96 <br /> Instrument I D #. F4 F4 F4 F4 <br /> Conc. Spiked: 200 pg/L 200 Ng/L 200,ug/L 200 Ng/L <br /> LCS Result- 153 142 133 151 <br /> LCS % Recov. 77 71 67 76 <br /> MS/MSD <br /> LCS <br /> Control Limits 39-98 23-97 46 118 10 to 80 <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> S 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 H <br /> the re very 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 /> P g Pe ner ”"MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference <br /> Pr ct Ma Page 2 of 3 9611 H98 BLA 8 <br />