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Sequoia 680 Chesapeake Dnve Redwood Gry CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5 10)988 9673 <br /> Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> k r x; x4ir xvv wrr r rc rwxv <br /> OiDelta'Environmerital Consultants Client Project lD linocal�#5886,'StoCM8`h,'CA <br /> 3164 Gold Camp Dr, Suite 208 Matrix Sod <br /> Rancho Cordova, CA 95670 <br /> Attention Eric Holm QC Sample Group 6090208-16 Reported- Sep 19, 1996-, <br /> x Z" x..nv rax tM ,G <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst' C Lee C Lee C Lee C Lee <br /> Concentration <br /> Spiked 0 20 mg/kg 0 20 mg/kg 0.20 mg/kg 0 60 mg/kg <br /> LCS Batch# LCS091796 LCS091796 LCSM1796 LCS091796 <br /> Date Prepared 09/17/96 09/17/96 09/17/96 09/17/96 <br /> Date Analyzed. 09/17/96 09/17/96 09/17/96 09/17/96 <br /> Instrument 1 D #' GCHP 1 GCHP-1 GCHP-1 GCHP-1 <br /> . LCS <br /> Recovery 93 97 96 99 <br /> Control Limits 70-130 70-130 70-130 70-130 <br /> � ` .. xwv • r +.. v,.s w ,v...w hvm.. r.eYlr � F'+i`xar,['.r:.x xrvn-•wr rsv hvr c rrvn}r � .. ''ik '.n w,i v.4.Lu4iwxmrx.n vr. m. � <br /> MS/MSD <br /> Batch #' 6090133 Sam 133 5090133 6090133 <br /> Date Prepared: 09/17/96 09/17/96 09/17/96 09/17/96 <br /> Date Analyzed: 09/17/96 09/17/96 09/17/96 09/17/96 <br /> Instrument I.D.#' GC-IP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> % Recovery' 94 97 96 98 <br /> Matrix Spike <br /> Dup€tcate % <br /> Recovery, 93 49 96 99 <br /> Relative % <br /> Difference 11 2-0 00 1 0 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS+s a control sample et known,interferent free matrix that Is analyzed using the same reagents <br /> // preparation and anaiyucal methods employed for the samcies The LCS o recovery data is used for <br /> 1//LP <br /> � f � validation of saunoie catch results Due to matnx erfects .he CC�imits-or MS/MSDs are advisory only <br /> nda C Schneider and are not used to accept or reject batch results <br /> roject Manager/Sacramento Laboratory <br /> 6090208 DL7 <8> <br />