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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364.9600 FAX(415) 364.9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(5 10)686-9689 <br /> Analytical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> R591...:..v..x.}:...:.......iy.}'1.•:��::C:::A}.v.v..;rv.:.{.U..�?:^:-�::s:U":..v:J:::t:::-' ::h::U �.:�J.U.U- .'faLU:t'nU:.j�ti'vx .;�:��4:.+:5 �;�;' <br /> ... ... <br /> �lierlt Project lD: 150115.01, gtoclitori smith fan _ <br /> :4. <br /> r 1710 Main Street Matrix: LIQUID <br /> `<Escalon, CA 95320 ;. <br /> :;Attention: John Lane Work Order#: 9411185 01,02 Reported: Dec 13, 19941.1'.C:^:^:::'.. <br /> ....................c.::<r,nrvE.r,, .:-,+-sik-.::#..::.........:...foo-::«-rr:r.-:::•.So-:�rC'.x.. ..".. f::-SYr.-:i�N.-:.:c::ca:,ru:$rv�.¢n n.n,n,t.}i FR��a:......... YG4?.?":7s:x?:Srn.,,.-:rc..tfrrn.a.�.,�vtry.R?.'459A..�.�.d�.�'icYa'ro:' -.�' ."+Po?.fl:F44�M=e�oevaM.#-:?�7 <br /> COV#: <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC12004BTSWA GC12D694BTE)WA GC120W413TEX= GC120694BTEX03A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: NA NA N.A. NA <br /> Analyst: J.Minkel J.Minkel J.Minkel J.Minkel <br /> MS/MSD#: 941204309 941204309 941204309 941204309 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: NA NA NA N.A. <br /> Analyzed Date: 12/6/94 12/6/94 12/6/94 12/6/94 <br /> Instrument E.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc.Spiked: 10pg/L 10pg/L 10ug/L 30Erg/L <br /> Result: 10 10 10 31 <br /> MS%Recovery: 100 100 100 103 <br /> = 7 Dup. Result: 10 10 10 30 <br /> MSD%Recov: 100 100 100 100 <br /> RPD: 0.0 0.0 0.0 3.3 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> M <br /> LCS#: -- - - - <br /> Prepared Date: - - - - <br /> Analyzed Date: - - - - <br /> Instrument I.D.#: - - - - <br /> Conc.Spiked: - - - - <br /> LCS Result: - - - - <br /> LCS%Recov.: - - - <br /> 71-133 72-128 72-130 71-120 <br /> LCS <br /> Control Limits <br /> Please Note: <br /> The I-CS 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 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 /> l� interference,the LCS recovery is to be used to validate the batch. <br /> Vickie Tague Clark <br /> Project Manager "MS-Matrix Spike,MSD-MS Duplicate,RPD=Relative%Difference 9411M.WAT <2> <br /> I <br />