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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 /> }r r N r H rr,yvr}rrryvu S.,}rh nv v <br /> }`ryr' ` rx mrti vry r v r v;m 4 M1 k n Av�,4 r ti r r prrN r♦ nv r r rr nrr ~\r i v " .Hr v • rr v vr. wrr 1 v r rtr} +.hnr, <br /> Enviros Vfi Client Project ID N8hell 6131 Paclflc, StocktonA h <br /> - < 270 Perkins-Ave Matrix Solid "r <br /> Sonoma, CA 95476 u <br /> V Attention Joe Neely Work Order# 9707162-01 Reported Jul 18, 1997$r <br /> ..r y r}v♦ v vv n{�trr Sxrr r r v rn«r++_ v ry r v r r i r i x� rvnnn r ..xv v v ^ ry r }r rr O'/ hh r SJv r 4 rr rrrry }4'^h Ar4rvv '� <br /> QUALITY CONTROL DATA REPORT <br /> -- Analyte'-_`-`Beryllium--------Cadmium -Chromium- ---- — Nickel- <br /> GC Batch#: ME070997601OMDE ME0709976010MDE ME070997601OMDE ME070997601OMDE <br /> Analy. Method: EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep. Method: EPA 3050 EPA 3050 EPA 3050 EPA 3050 - <br /> Analyst: R Butler R Butler R Butler R Butler <br /> MS/MSD#. 9706176405 9706FG405 9706F6405 9706F6405 <br /> Sample Conc.: N D 16 610 51 <br /> Prepared Date: 7/9/97 7/9/97 7/9/97 7/9/97 <br /> Analyzed Date: 7/9/97 7/19/97 7/9/97 7/9/97 <br /> Instrument I.D #: MTJA2 MTJA2 MTJA2 MTJA2 <br /> Conc Spiked: 50 mg/Kg 5o mg/Kg 50 mg/Kg 50 mg/Kg <br /> Result: 33 38 740 75 <br /> MS %Recovery: 66 73 260 48 <br /> Dup. Result: 36 41 810 92 <br /> MSD % Recov.: 72 79 400 82 <br /> RPD- 87 7 6 9 0 20 <br /> RPD Limit: 0-20 0-20 0-20 0-20 <br /> LCS#: BLK070997 BLK070997 BLK070997 BLK070997 <br /> Prepared Date: 7/9/97 7/9/97 7/9/97 7/9/97 <br /> Analyzed Date: 7/9/97 7/9/97 7/9/97 7/9/97 <br /> Instrument 11.13 #: MTJA2 MTJA2 MTJA2 MTJA2 <br /> Conc Spiked: 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> LCS Result: '51 50 52 52 <br /> LCS%Recov.: 102 100 104 104 <br /> 80-120 80-120 80-120 80-120 <br /> LCS 80-120 80-120 80-120 80-120 <br /> Control Limits - <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagent <br /> SEKregoryr <br /> iCAL 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 /> Iinterference,the LCS recovery is to be used to validate the batch <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9707162 EEE <2> <br />