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fl <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX(415) 364-9233 <br /> x .+r^t v av4 v rw x rs v4 ♦4{ • nC vKvv xoY.0 Hutu'.{}{r+eUSh*:,:+$N$'c`lwur...vuy{4WW"'G�]"'�ir+ry\ti'e^r2 <br /> v f.+ x \ qu +.c aov•l.:. }LwIr J;V ,.ruY t~ r+4�vVU hYvv n}'vrvn' + rvprr+,M.v.W+xv+�ee$'+l`YrixviFA4�Y]GSJ.v�h]�4�.er i+13]avn S <br /> RESNA ' MV rvClient Project ID roY W0327 00, Knowles Propertym <br /> 1710 Main Street Matrix Water <br /> c <br /> n Escalon, CA 95320 < <br /> ,Attention John Lane CC Sample Group 3G37705 A Reported Jul 19, 1993 < <br /> h ♦ m`kx nr. + u`y p+J v.+v{�U 7'3Yvy�l'.urb'a"' .�YO4'MW <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: M Nipp M Nipp M Nipp M Nipp <br /> Conc Spiked: 10 10 10 30 <br /> Units: Pg/L ug/L us/L ug/L <br /> LCS Batch#: BLK071393 BLK071393 BLK071393 BLK071393 <br /> Date Prepared: N/A N/A N/A N/A <br /> Date Analyzed: 7/13/93 7/13/93 7/13/93 7/13/93 1 <br />.Instrument I.D.#: GCHP-3 GCHP-3 GCHP-3 GCHP-3 <br /> LCS % <br /> Recovery: 100 100 110 103 <br /> Control Limits: 80-120 80-120 80-120 80-120 <br /> v .. l + {.+v+uw !i n}♦Y r z,U v : { 4 n r . t +v iv}+i` v r{`.4 r.�Jr{+vr`+u A+ +++4{4 t v i+SY{]� p�.�v'.`v�+w+wr <br /> + ` v ,nL$?v Y+v 1,ti v rry}rim �nn rxv+xv S} a F'�r.u'.ti wCti + v v �' � r rv}ry w♦]+ +v Y v+4+.veryr�.r.w.:.0.x'r.u$3�v'.�x3xvn+4.v r4 ro}}'ii r`m` 4~�mvr]F+hW�y+�s+�x�Ma' <br /> MS/MSD <br /> Batch#: 31334803 3G34803 3G34803 3G34803 <br /> Date Prepared: N/A N/A N/A N/A <br /> Date Analyzed: 7/13/93 7/13/93 7/13/93 7/13/93 <br /> Instrument I.D.#: GCHP-3 GCHP-3 GCHP,3 GCHP-3 <br /> Matrix Spike <br /> %Recovery: 95 95 96 97 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 110 110 110 107 <br /> Relative% <br /> Difference: 15 15 14 98 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> 1 LK valydabon of sample batch results Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> and are not used to accept or reject batch results <br /> Vickie Tague <br /> Project Manager 3637701 WAT <4> <br />