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Sequoia 680 Chesapeake Drive Redwood City CA 9406.1 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Hates Ave..,,Suue L Concord CA 94520 (510) 686 9600 1A(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br />'� rx r v , r +{v , Y s ry •r v + .r vY L ry v h . * N v A v . . • v+ti . { n r v <br /> 'Gett14 Ryan/Ge6stiategies Client Project ID Unocal 6691 <br /> 3035 Prospect Park Drive #80 Matrix Liquid <br /> ;Rancho Cordova, CA 95670 <br /> ,,Attention Greg Gurst Work Order# 9411489 -01 Reported Nov 11, 1994 ` <br /> Coc # <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC111094BTEX03A GC111094BTEM3A GC111094BTEX03A GC111094BTEX03A <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep.Method, N A. N A. N A. N A. <br /> Analyst. J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD #: G9411045-03E G9411045-03E G9411045.03E G9411045.03E <br /> Sample Conc : N D N D N D N D <br /> Prepared Date: N A. N A. N A. N k <br /> Analyzed Date' 11/10/94 11/10/94 11/10/94 11/10/94 <br /> Instrument I.D.# GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc Spiked. 10ug/L 10ug/L lopg/L 30ug/L <br /> Result 98 99 10 30 <br /> MS% Recovery 98 99 too 100 <br /> Dup. Result 10 10 10 31 <br /> MSD % Recov.: 100 100 100 103 <br /> RPD, 20 10 00 33 <br /> RPD Limit* 0-50 0-50 0-50 0-50 <br /> + fi 01 <br /> X0 <br /> y i s •, '� r ' . , 4 l,.!..., r. t.}, i .. <br /> hiS fu fnh } } ♦ ♦♦ x {4n-. yr ry .n J?\n h Y{ :> <br /> LCS # <br /> Prepared Date- <br /> Analyzed Date: <br /> instrument 1 D.#' <br /> Conc. Spiked <br /> LCS Result: <br /> LCS % Recov.: <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known.Interferent-tree matrix that Is analyzed using the same reagents, <br /> SEQUOIA A AL,I71CAL 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 /> Tod 0 e <br /> Project Manager "*MS=Matrix Spike,MSD=M$Duplicate,RPD=Relative%Difference 9411499 GET <I> <br />