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, Sequoia 680 Chesapeake Drive Redwood Ctry,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 8t9 5trsker Avenue,Suite B Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Baine TechServices, Inc ~� h r Client Project ID Chevron 9-2033 /970821-F3 n <br /> 1680 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: 1,1-Dichloro- Trichloro- Chloro- <br /> ethene ethene Benzene <br /> QC Batch#: GC082897801024A GC082897801024A GCO82897801024A <br /> Analy Method. EPA 8010 EPA 8010 EPA 8010 <br /> Prep Method: EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J Minkel J Minkel J Minkel <br /> MS/MSD# 9708C5924 970805924 9708105924 <br /> Sample Conc ND 77 ND <br /> Prepared Date 8/28/97 8/28/97 8/28/97 <br /> Analyzed Date 8/28/97 8/28/97 8/28/97 <br /> Instrument I D # GCHP24 GCHP24 GCHP24 <br /> Conc Spiked 25ug/L 25pg/L 25 jig/L <br /> Dilution Factor: 20 20 20 <br /> Result 590 540 510 <br /> MS % Recovery: 118 93 102 <br /> Dup Result: 580 600 550 <br /> MSD % Recov : 116 105 110 <br /> RPD: 17 11 75 <br /> RPD Limit: 0-25 0-25 0-25 <br /> LCS #: BLK090297 BLK090297 BLK090297 <br /> Prepared Date. 9/2/97 9/2/97 9/2/97 <br /> Analyzed Date: 9/2/97 9/2/97 9/2/97 <br /> Instrument 1.13 #: GCHP24 GCHP24 GCHP24 <br /> Conc. Spiked. 25 ug/L 25 yg/L 25 jig/L <br /> LCS Result: 23 22 23 <br /> LCS%Recov : 92 88 92 <br /> 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 <br /> Control Limits <br /> Please Mote <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> �SEQfALLYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> tortified with known quantities of specific compounds and subjected to the entire analybcal procedure If <br /> the recovery of analytes from the matrix spike does not fall within specs ied control limits due to matrix <br /> interference,the LCS recovery 1s to be used to validate the batch <br /> P ggy **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Pr ec 9708D46 BLA <6> <br />