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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 /> i ! r `i n , •s ! r 4 f <br /> v}jhlh v`� n 4Ji v 1 nn lin♦ r 1 r n� f n 1; 1} <br /> Blaine Tech Services, Incr Client ProjectrlD" Chevron 9-863'2'/970107-Zir <br /> ,'1680 Rogers Avenue Matrix Liquid <br /> wSan.lose, CA 95112 h <br /> Attention Fran Thie Work Order# 9701244-01 Reported Jan 16, 1997-" <br /> QUALITY CONTROL DATA REPORT <br /> Analyte' 1,2,4-Tnchloro- 4-Chloro 3- Acenaphthene 4-Nitrophenol <br /> benzene Methylphenol <br /> OC Batch#: MS0107978270EXA MS0107978270EXA MS0107978270EXA MS0107978270EXA <br /> Anally. 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 /> MS/MSD#: BLK010797 BLK010797 BLK010797 BLK010797 <br /> Sample Cone.- N D N D N D N D <br /> Prepared Date 1/7/97 1/7/97 1/7/97 1/7/97 <br /> Analyzed Date. 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Instrument I D #: F4 F4 F4 F4 <br /> Cone. Spiked: 200 ug/L 200 pg/L 200ug/L 200 ug/L <br /> Result. 137 155 140 52 <br /> MS %Recovery 69 78 70 26 <br /> Dup Result' 146 163 147 42 <br /> MSD % Recov ' 73 82 74 21 <br /> RPD' 64 50 49 21 <br /> RPD Limit 0-30 0-30 0-30 0-30 <br /> LCS#. WBO10997 WBO10997 WB0ID997 WB010997 <br /> Analyst. B Pitamah B Pitamah B Pitamah B Pitamah <br /> Prepared Date 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date: 1/12/97 1/12/97 1/12/97 1/12/97 <br /> Instrument I D #: F4 F4 F4 F4 <br /> Cone. Spiked: 200 Ng/L 200 pg/L 2O0ug/L 200pg/L <br /> LCS Result 165 138 149 32 <br /> LCS %Recov ' 83 69 75 16 <br /> LCS <br /> Control Limits 39-98 23-97 46-118 10 to 80 <br /> Please Note <br /> The LCS 1s a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> UOI 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 /> Penn **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager Page 2 of 3 9701244 BLA `8' <br />