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r <br /> j SEQUOIA ANALYTICAL <br /> ;• 680 Chesapeake Drive • Redwood City, CA 94063 <br /> . (415) 364-9600 FAX(415) 364-9233 <br /> IN ................ ............. <br /> RESNA Client Project ID: OW0195.00 Western Stone,Tracy <br /> >1710 Main Street Matrix: Liquid <br /> '`Escalon, CA 95320 <br /> <Attention: Greg Stahl <br /> QC Sample le Group: <br /> 3LD170i <br /> Reported <br /> . ...........}...:......................r.........h1M11v:.r�..r:^.x-..v...:.........:..... .::... :....x....;:..,.:..:....-:?.�.:.:.:...:.:...r.:n.:..w....,.:....::.:_......-..v....:.....:...:.n..::};.,.v:;.:::::.,....:.....�....,.�:.}ori:>: :v <br /> - Re orte <br /> dJan 1:.}1:. <br /> •. <br /> .... n ....w.:.v <br /> - <br /> nv <br /> ;..:...L..l.:.:.r.....t�vx.M1:r iY:v�ii:. x :av <br /> .� u...-::.v.•.:............v.:..x.vm:.z.......wn.}....:.�4}:.n.�v�:?...-...{?}i4�`::L�i:....M1.:ir!C�:�uG}Grr...::{..�i-.-. <br /> ff QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel Benzene Toluene Ethyl Xylenes <br /> + Benzene <br /> Method: EPA 8015 EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst- D.Tran M.Nipp M.Nipp M.Nipp M.Nipp <br /> MS/MSD <br /> Batch#: 3LD0401 31-00201 3LD0201 3LD0201 3LD0201 <br /> s Date Prepared: 12/28/93 - - - <br /> Date Analyzed: 1/1/94 1/3/94 1/3/94 1/3/94 1/3/94 <br /> Instrument i.D.#: GCHP-5 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Conc. Spiked: 6Mpg/L 10ug/L long/L 10pg/L 30pg/L <br /> Matrix Spike <br /> =-" %Recovery: 100 100 110 103 <br /> Matrix Spike <br /> Duplicate% <br /> EJ.I Recovery: 100 100 100 103 <br /> Relative% <br /> Difference: 0.0 0.0 9.5 0.0 <br /> .........4.8.4...- ......�-.. ......................_........:...............Y.... .........:.4.M1-....r.v ...::::�:_.::: rr:'r...:.r.::�:�: <br /> ..........}.::...............4..: ......�-v..-.............._._. .................}.v...................:...n...:.....n.},....r.......{B.J:.B...n.n.........._i::}::j:.?._:-.::_:::..'-}i *:!'$:�:�j::ti.:.::'�i: <br /> i?..}.....J...v.....:n�v:^Ys. .n::...'F...v.1-.-....;U....:.4-.:.n�.....4.tr.:--...-:::"::::.r.v:.;._...;{.. ........... <br /> }......4:::.;::.:...:.{-i:?� v..v.•..n. ...::.... 3.:........ r2$ '"{:.::;:i:}:%?:::}::::..........v.- ::...t.:,. rk�ik}•v}:.....:1.... <br /> LCS Batch#: auc122as3 _ <br /> Date Prepared: 12/28/93 <br /> Date Analyzed: 12/30/93 <br /> -' Instrument I.D.#: GCHP•4 _ <br /> G LCS% <br /> Recovery: <br /> s2 <br /> % Recovery <br /> Control Limits: 28-122 71-133 72-128 72-130 71-120 <br /> * MS MSD affected by sample matrix. <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 /> 1 \t fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> Y l,� the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> P flll�_ <br /> Vickie Tague interference,the LCS recovery is to be used to validate the batch. <br /> Project Manager 3LD1701.wAT <3> <br />