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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 5tnker Avenue,Swte 8 Sacramento CA 95834 (916) 921-96W FAX(916)921-0100 <br /> _ ' "' "°v£ h,vm<ar x-�;�'^�xa�,"�,w%�"'yy`"' { }%`W �'" .r:Yn,�.o-'i�. ^"v. '; :w; �„t,• � <br /> �ugro West, Inc-rr` ryr rv. r rr, h Client Project It) Shelf, 141 N �l Dorado, Stockton, CA r~ 4 rc} <br /> 1050 Melody sane, Ste 160 Matnx <br /> x Roseville, CA 95678 151995 <br /> , <br /> AttentionSl�dhakar Talank) CC Sample Group Reported Sep w �nk <br /> °�`4r�E <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium Chromium Lead Nickel Zinc Cooper Silver <br /> Method. EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 BPA 200 7 <br /> Analyst: K Barta K.Barta K.Barta K Basta K- Barts K-Balla <br /> K.Barts <br /> Concentration <br /> Spiked. 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L 0 50 mg/L <br /> LCS Batch#' LCS090695 LCS090695 LCS09o895 LCS090895 LCS090895 LCS090695 LCS090695 <br /> Date Prepared' 9/8/95 9/8/95 9/8/95 9/8/95 9/8/95 9/6/95 9/6/95 <br /> Date Analyzed' 9/14/95 9/14/95 9/34/95 9/14/95 9/14/95 9/20/95 9/20/95 <br /> Instrument 1.0 #' P-40 P-40 P-40 P-40 P-40 P-40 P-40 <br /> LCS % 96 94 <br /> Recovery: 99 96 97 94 103 <br /> Control Limits: 80-120 60-120 8x120 80-120 8(1-120 80.120 80-120 <br /> -. n�r .}r "in, N, r .y.vv rn...ar.£winrc.w>...,.v.. ,cvrrrc w-rrv{r.w r. ,.h ..w, '�.F• ..x a.h, x,..✓,,..., v rcn-v.a s >_rn -.,v <br /> Batch # 5090253 50907.53 5090253 5090253 5090253 5090253 5090253 <br /> Date Prepared. 9/8/95 9/8/95 9/8/95 9/8/95 9/8/95 9/6/95 9/6/95 <br /> Date Analyzed: 9/14/95 9/14/95 9/14/95 9/14/95 9/14/95 9/20/95 9/20/95 <br /> Instrument LD #: P-40 P-40 P-40 P-40 P-40 P-40 P-40 <br /> Matnx Spike <br /> % Recovery: 101 100 98 94 104 97 94 <br /> Matnx Spike <br /> Duplicate% <br /> Recovery: 101 100 99 98 103 94 92 <br /> Relative% <br /> Difference- 0 0 00 10 42 <br /> 0.96 3 t 22 <br /> Please Note <br /> The LCS is a control sample of known,interterent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the CC limits far MS/MSG's are advisory only <br /> and are not used to acceot or re ect batch results <br /> L1nda Schneider <br /> Project Manager 5o90177FUG <10> <br />