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j SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord,California 94520 <br /> (510)686-9600 FAX(510) 686-9689 <br /> reys!.,.....:s•- ' �::c-•7':_.,.,,.: t<+rss:4..mea-:^u.:::•r ::!eyy:.,i�n�;-.; v•v?'kay.{.}•,.v>.}s..::,ko?"{.R:y:{;'.:�:�-ray>:}r`;>'.}:;` <br /> btlr{rSii{<S:{;I,.rrF.:::}:::niK?A:'r:�".-."r:•:i:'ii::}ri:1�,r M;-:.r'r` cc»vR:�:�.g:.�vn a.r��• r:,-'as, 6,.` :ter ,�;k:°.ra:�.wc -..-..rxanJroi:c?aS::..a:.r.,.�-:.,K}.4-.3�F?:.S�C;,..a..y,.�o��Gi?<5�1 <br /> �I�+asvc�aciaes`":.'�.`frAwY,�`.::.r::r::r::>r.:< Clen project iD�=r.'�.Arca`#'���33�= =4�J�Stocicton <br /> a 1855 Gateway Blvd., Ste.770 Matrix: Soil <br /> Concord,CA 94520 } <br /> Attention: Paul Supple QC Sample Group 305-0159 Reported: May 7, 1993 <br /> w.. ..r:x::::::4.i;:vs:.:8v;p:...::::.v.::::...::::::::..:::en.n+nct-x:�•r.:..v.::::..:'i.::v:{.�:Criii'fr.:4:4'r:.ri C:.Y:r4:..:S.::i.::.i::r <br /> :........v..v..:..v........v..........v...v.t ...v.v.....v..v.....:n..vr.r.r...n...........r.n...r..r.n.....rri:Cv........>.>..v:...}:•:R'iv................rn,.u..v..v.v............v..:ri..............r........v...........:.v:.....:.... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- STLC <br /> Benzene Toluene Benzene Xylenes R-Sulfide Cyanide Lead <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 9030 EPA 9010 EPA 7421 <br /> Analyst: J.F. J.F. J.F. J.F. K.F. A.S. K.V.S. <br /> Conc.Spilled: 0.40 0.40 0.40 1.2 10 3.3 1.0 <br /> Units: m9/K9 mg/K9 mg/K9 mg/K9 mg/K9 m9/K9 m9/L <br /> LCS Batch#: 1LCS050693 1LGS050693 1LCS050693 1LCS050693 LCS050793 LCS050793 BLK050693 <br /> Date Prepared: 5/6/93 5/6/93 5/6/93 5/6/93 5/7/93 5/7/93 5/6/93 <br /> Date Analyzed: 5/6/93 5/6/93 5/6/93 5/6/93 5/7/93 5/7/93 5/12/93 <br /> Instrument I.D.#: HP-2 HP-2 - HP-2 HP-2 N/A N/A SpectrAA-400 <br /> LCS% <br /> '46P' Recovery: 114 112 111 125 89 95 80 <br /> Control Limits: 70-130 70-130 70-130 70-130 80-120 80-120 75 125% <br /> }:4:4 <br /> oca«:^:<f•,:?!e},:Khi.jtx<::c`::;:'::;:;':;:=:<=:%�:i'>tc5'S5':=:_%=t �: .y:::':y:C.......................:................................................................................................... <br /> ............................ ......._ <br /> MS/MSD <br /> Batch#: 3050260 3050260 3050260 3050260 9305009 93050091A 3050159 <br /> Date Prepared: 5/6/93 5/6/93 5/6/93 5/6/93 5/5/93 5/5/93 5/6/93 <br /> Date Analyzed: 5/6/93 5/6/93 5/6/93 5/6/93 5/5/93 5/5/93 5/12/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 N/A N/A SpectrAA-400 <br /> Matrix Spike <br /> %Recovery: 113 113 113 127 100 90 84 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 118 115 115 130 100 91 84 <br /> Relative% <br /> Difference: 4.3 1.8 1.8 2.3 0.0 1.1 0.0 <br /> SEQU I ALYTICAL Please Note: <br /> The LCS is a oontrol 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 /> M7 <br /> validation 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 /> Kenneth K.F. Lee <br /> Laboratory Director <br /> 3050159.ROU <4> <br />