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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> Analytical 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686.9600 FAX(510)686.9669 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX (916)92 1-0 100 <br /> '1 <br /> w r::{:�o:-: ..k <br /> ., <br /> ;K'..x..r.rrv... kr.t .,..r.r.rv:,.,:": <br /> x h•r.:x:.v:.,m �}:........: :i::�i.:_n::::? ....,.,..,:?:O:i) S:::-.Vrv:.:...:.rv..:. <br /> +ARESNA Client Project ID: OW0365.02, Stockton Smith Canal <br /> 1710 Main Street Matrix: Liquid ;n <br /> ,Escalon, CA 95320 h <br /> :':Attention: John Lane QC Sample Group: 4DG1201-5 Reported: May 10, 1994 <br /> +�y xr; <br /> ii : <br /> :i0.....: <br /> .r...:., r .... {...: .. ,. .:. }' .. yr vn•.v.• .n'nvry.. �7{�r•::�h. •.,:i:i. ... v ............u. ... ry ... is .... ...; <br /> ;}.?i? . .:`?:fr,.:'~�` i:}}?:;i:.:}.,.•� '::+Yvt{:::.of <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015 <br /> Analyst: R.Vincent R.Vincent R.Vincent R.Vincent M.Cassidy <br /> MS/MSD <br /> Batch#: 4DF9803 4DF9803 4DF9803 4DF9803 BLK050394 <br /> Date Prepared: - - - 5/3/94 <br /> Date Analyzed: 5/5/94 5/5/94 5/5/94 5/5/94 5/4/94 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-5 <br /> Conc.Spiked: 10pg/L 10pg/L 10pg/L 30pg/L 600 pg/L <br /> Matrix Spike <br /> -'j %Recovery: 95 95 95 97 78 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 100 100 100 103 79 <br /> -r <br /> Relative% <br /> Difference: 5.1 5.1 5.1 6.0 1.3 <br /> ::} 4'.-J:: .:Oi ?1;J rs}'•: ::f{}:::}:: ::(.::J:i?::}p':.}'fi:{fi::{:j�i;'}.; .;{ O.x}C. {p{, '.LY:{:}':;}:J:G}j:ii4' ':G'„'irY:r .).:. <br /> A.�{�:{•ro::o:'r::'t:rS::}}.o::::a.}'•?:qrS:o'nxo::Yn:m:a}?:�.?:r?,r:?.o}xo.o.r.a.`{•.•: �r:c:.c:f?::'?,oj:o:'t;}:4�:.;r+}xyrvr:.::•i:•::{.x'.s}:?o:o::o..okof.::•}rc:..}:o::n:o}:p}:•::a?,::ei?:oxny::o::,}.o:'t:: '}r?4r�:;:s.::>:;::;..:::,:n.:�R. ¢ ...... ... .........: <br /> LCS Batch#: - - - - - <br /> Date Prepared: <br /> Date Analyzed: - - <br /> Instrument I.D.#: - - <br /> LCS % <br /> Recovery: - - <br /> % Recovery <br /> Control Limits: 71.133 72-125 72-130 71-120 28-122 <br /> Please Note: <br /> The LCS 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 /> UUU t 14 l Interference,the LCS recovery is to be used to validate the batch. <br /> Vickie Tague Clark <br /> Project Manager 4DG1201.WAT <3> <br /> .ra, <br />