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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> 1-9600 FAX (916) 921-0100 <br /> • XSfUWe;1Sa-= �y"m�#�a�ayyyAr <br /> 4irew rro 8G't Ili 11100 2168-93'2, �tOC�(tOn .. ., �9 ,3u�0" ,.0"'23,v d. v. '.za 4 .a <br /> 3164 Gold Camp Dr, Suite 200 Matrix: SOD <br /> Rancho Cordova, CA 95670 <br /> Attention David Stavarek OC Sample Goup 310-0505 Reported Oct 21, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 10-Dichioroeehene Trichlomethene Chloro- <br /> benzene <br /> Method: EPA 8010 EPA 8010 EPA 8010 <br /> Analyst: K.Nil K.Nil K Pull <br /> Concentration <br /> Spiked: 10 ppb 10 ppb 10 ppb <br /> LCS Batch#: LCS101993 LC5101=1 LCS101993 <br /> Date Prepared: 10/19/93 10/19/93 10/19/93 <br /> Date Analyzed: 10/19/93 10/19/93 10/19/93 <br /> Instrument I.D.#: HP5890/7 HP5890/7 HP5890/7 <br /> LCS y <br /> Recovery:: <br /> 100 83 100 <br /> Control Limits: 26-167 35-148 38-150 <br /> ,,,'��';yM'k^•r..r .^9^�{{,- iM1r o ���o,F.�wfry` l 'i`a a,,,. ,f{�,,, n rr fk i xr r+s.,4���n rr,,.,,+;f: <br /> � r Sy}sri`vnn+'k r. r3.v r t .} r ♦ ,.,.. .. �v t v v v}n ,.nS r r ' ,. ,. r ..rv4r s.p�[+O+v h{rA ,.3'[v0. r ,.- t <br /> •1+� m Y .. t r <br /> MS/MSD <br /> Batch#: 3100603 3100603 3100603 <br /> Date Prepared: 10/19/93 10/19/93 10/19/93 <br /> Date Analyzed: 10/19/93 10/19/93 10/19/93 <br /> Instrument i.D.#: HP5890/7 HP5890/7 HP5890/7 <br /> Matrix Spike <br /> %Recovery: 50 49 91 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 58 51 93 <br /> Relative% <br /> Difference: 15 40 22 <br /> Please Note <br /> The LCS Is a control sample of known,Interferent 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 QC limits for MS/MSD's are advisory only <br /> �� and are not used to soca or reject batch results <br /> Linda C. Schneider �Gv1 <br /> Prated Manager 3100505 RES <2> <br />