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f! <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (590) 988 9600 FAX(510)988 9673 <br /> Analytiea1 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> syv,•rxu s s xs r v }ss s y�sv.r v4 O v n sry v sgr4 v �ss Cx r}s}}s w In k;unv w sysv� n sv vs Sr . "+}^`{yn} rr w}�rh v{vq s T vp yy <br /> .. v.v x1-r 'Ln s�'} ♦ x vns,.4 s �v.ss r r yr r ry 4 r v`�w rrr.W Jr!s E w'Y+�n nw •v ti <br /> A-Gettler Ryan/Geostrategies bleat Prol6 ID- Unocall$#5886 r <br /> 1{6747 Sierra Court, Ste J Matra Liquid } <br /> Dublin, CA 94568 <br /> ;Attention Deanna Harding Work Order# 9803G82-06-08 Reported Apr 15, 1998. <br /> 4s rr.}S xC x C44x >xr <br /> QUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> OC Batch#' MS033198MTSEF3A <br /> Analy Method EPA 8260 <br /> Prep Method- N A. <br /> Analyst E Manuel <br /> MS/MSD #- 9803H0602 <br /> Sample Conc 39 <br /> Prepared Date - <br /> Analyzed Date 3/31/98 <br /> Instrument I D #. F3 <br /> Conc Spiked 50 ug/L <br /> Result 56 <br /> MS % Recovery 104 <br /> • Dup Result 56 <br /> MSD % Recov 104 <br /> RPD. 00 <br /> RPD Limit: 0-25 <br /> LCS # LCS033198 <br /> Prepared Date - <br /> Analyzed Date. 3/31/98 <br /> Instrument I D # F3 <br /> Conc. Spiked 50pg/L <br /> LCS Result. 55 <br /> LCS % Recov ' 110 <br /> 60-140 <br /> LCS 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 /> VAI&EQUOIAA LYTICAL 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 /> interference,the LCS recovery is to be used to validate the batch <br /> ger **MS-Matrix Spike,MSD-MS Duplicate, RPD-Relative%Difference 9803G82 GET <5> <br />