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LI <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> /� <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)921-0100 <br /> AnalT,}ical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> ATC Associates, Inc Client Project ID Bozzano Property <br /> 1260 Graphics Drive Matrix Solid <br /> Modesto, CA 95351-1502 <br /> Attention Tom Lutterman Work Order# 9806E06-01-10 Reported Jul 7, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte 1,1-Dichicroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> OC Batch# MS0623988260EXA MS0623988260EXA MS0623988260EXA MS0623988260EXA MS0623988260EXA <br /> Analy Method EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Prep Method N A N A N A N A N A <br /> Analyst L Zhu L Zhu L Zhu L Zhu L Zhu <br /> MS/MSD# 98068723 98068723 98068723 98068723 98068723 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 6/23/98 6/23/98 6/23/98 6/23/98 6/23/98 <br /> Analyzed Date 6/23/98 6/23/98 6/23/98 6/23/98 6/23/98 <br /> Instrument I D # F3 F3 F3 F3 F3 <br /> Conc Spiked 2500 ug/Kg 2500 ug/Kg 2500 ug/Kg 25GOgg/Kg 25OOpg/Kg <br /> Result 2200 2200 2500 2200 2300 <br /> �MS % Recovery 88 88 100 88 92 <br /> Dup Result 2200 2300 2600 2400 2400 <br /> MSD % Recov 88 92 104 96 96 <br /> RPD 00 44 39 87 43 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS# LCS062498 LCS062498 LCS062498 LCS062498 LCS062498 <br /> Prepared Date 6/24/98 6/23/98 6/23/98 6/23/98 6/23/98 <br /> Analyzed Date 6/25/98 6/23/98 6/23/98 6/23/98 6/23/98 <br /> Instrument I D # F3 F3 F3 F3 F3 <br /> Conc Spiked 2500ftg/Kg 2500 ug/Kg 2500 ug/Kg 2500mg/Kg 2500,ug/Kg <br /> LCS Result 2700 2500 2800 2600 2500 <br /> LCS % Recov 108 100 112 96 100 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 65-135 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> �EQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> I 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 /> interference,the LCS recovery is to be used to validate the batch <br /> ICa Imy *"MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference <br /> rolect Man ger 9806E06 AAA <4> <br />