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Sequoia fJ 680 Chesapeake Drive Redwood Ci <br /> 4 ooty,CA 9 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 8 t9 Striker Avenue,Suite 9 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> ........ <br /> Developments Client Project ID: 9-1482, Chevron 9-1452 <br /> ""5807 Balboa Drive Matrix: Solid <br /> Oakland, CA 94611 <br /> Robert Mallory <br /> Work Order#: <br /> 95O9J53 -01, 02 <br /> ?- , .... :,1 Reported: 3, 1995;,,. <br /> . ......... . ... Oct i <br /> ........... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte- 1,11-Dichlorb- Trichloro- Chloro- <br /> ethane ethane benzene <br /> QC Batch#:' GCO928958010EXA GC0928958010EXA GCO928958010EXA <br /> Analy. Method: EPA 8010 EPA 8010 EPA 8010 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: A. U A. U A.Li <br /> MS/MSD#: 9509115101 9509H5101 9509H5101 <br /> Sample Conc.':' N.D. N.D. N.D. <br /> Prepared Date: 9/28/95;' 9/28/95 9/28/95 <br /> Analyzed Date: 9/29/95: 9/29/95 . 9/29/95 <br /> Instrument I.D.#;;' GCHP161 GCHP16 GCHP16 <br /> Conc. Spiked.- 25 pg/Kg 25,ug/Kg 25 pg/Kg <br /> Result:, 28 j <br /> 28 26 <br /> MS%Recovery:' 112 112 104 <br /> V <br /> Dup. Result. 32 34 30 <br /> MSD %Recov.:, 128 <br /> 136 120 <br /> RPD:' 13 <br /> 19 14 <br /> RPD Limit:" 0-50 0-50 0-50 <br /> ".01.. .......... <br /> ............... ..... ....... <br /> ............ <br /> .............. <br /> .......... <br /> .......... <br /> 4 <br /> LCS BLK092895. BLK092895 BLK092895 <br /> Prepared Date: 9/28/95 9/28/95 9/28/95 <br /> Analyzed Date:i 9/29/95 <br /> 9/29/95 9/29/95 <br /> Instrument I.D.#: <br /> .1 GCHP16 GCHP16 GCHP16 <br /> Conc. Spiked:, 25 pg/Kg 25 ug Kg 25 pg/Kg <br /> LCS Result::. 24 25 22 <br /> LCS % Recov.:iE96 100 88 <br /> M <br /> LCS 28-167 35-146 38-150 <br /> Control Limits J! <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> ,-SE U'OIAANALYtICAL ij preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> 4 fortified with known quantities of specific compounds and subjected to the entire analytical procedure. It <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> li [interference,the LCS recovery is to be used to validate the batch. <br /> Mark . Cargasacchl MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference <br /> Project Manager <br /> 9509J53.TTT <1> <br />