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r - - <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94.520 (sto) 686-9600 FAX(5 0)686-9689 <br /> 00 <br /> r „ Analytical 819 Striker Avenue,Suite a Sacramento,CA 95834 (916) 921-96FAX(916)921-0100 <br /> -{ ::+v5'Yri`�''.':�::r.'::::��.t::}::::].:aS.:.:.:.:..�':=�:-:,•.�_:;�;:::�i:�'f::+`.�r.`::::+i::.rr::: <br /> .•. :.v.r.f.r..:__ <br /> �Pa• rIc�nv� ronm <br /> eZta!"G o:vu <br /> p .MC:�e>n <br /> t"Project 1[]: �....,. <br /> 310-00'f�.03�0788, 13uIk�Plant <br /> 2025 Gateway Place, Suite 440 Matrix: Liquid <br /> >San Jose, CA 95110 <br /> i Att nti �<t <br /> • e on: Maree Roden <br /> amp,a 9054 ,3 a ed: Se • <br /> l�8 1994.$ <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 6020 EPA 8020 <br /> Analyst: J.Minkel J.Minkel J.Minkel J.Minkel <br /> MS/MSD <br /> Batch#: 940845708 94GB45708 940845708 940845708 <br /> Date Prepared: N.A. N.A. N.A. N.A. <br /> Date Analyzed: 9/6/94 9/6/94 9/6/94 9/6/94 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Conc.Spiked: 10lrg/L. 10Ng/L 10pg/L 30p9/L <br /> Matrix Spike <br /> %Recovery: 110 110 110 107 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 100 100 103 <br /> Relative% <br /> Difference: 9.5 9.5 9.5 3.8 <br /> ,:•.w;r�:}n<nv.: ::< .r.<�A:.::}:r::<.;,...%�:.�.-{,?.:�v:,.r;:.:,� �...ui??f??,}v .,...<{.:::::::::.x.:::::.:.s,.:f{{:v.:::::-...:.:...::.::r:::::..f <br /> ...... ........... <br /> ws.a...}:wf:.,.•'.t1... :.::.:...... :v:.:::.r :..v:.-. �.':r:::....:r::::�::::nv.:ryv.;:%:x.{'.;:;rj:::C vri�:4 Y:i:::}�: <br /> q-::.w::,:.::..::...'...,:::Y....,..,».:..+:++..vn whv:x....:v.'G:.. :...:.. .......:.i....:....v::....r:...:.....::::::::�.::�ai...f � .:f.::::osws']i.�,kY.'fi..�`':'-'.H.Z".u:SiGwhv...•w,..,r:s:...:..s�-a....}:.::�..�•<.yv:.M,`�,.,.-.a•-.i�¢,:.,�..{S�.vNi'��Jw,. <br /> LCS Batch#: <br /> Date Prepared: <br /> Date Analyzed: <br /> Instrument E.D.#: <br /> LCS % <br /> Recovery: <br /> %Recovery <br /> Control Limits: 71-1333 72-128 72-130 71-120 <br /> . . Please Note: <br /> The LCS is a control sample of known,interferent free matrix:that is analyzed using the same reagents, <br /> JOI -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. 4 <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 /> Eileen . Manning <br /> Project Manager 9409054,PPP <8> <br />- i <br />