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•, ( \ Sequoia 630 Chesapeake Dave Redwood Gey CA 94063 (415) 364 96W FAX(415)364 9233 <br /> 1900 Data Averxrc,Suit,L Goncorel CA 94520 (510) 696 9600 FAX(510)696 9639 <br /> OF Analytical 119 Sinker Avenue,Suite 9 Sacramento,GA 95934 (916) 921 9600 FAX(916)921.0100 <br /> 't?; umv>$xa�4wak: vxwr„awe Owa w2`4ow"� «ate �'noYa` xntaLo$aw�aa <br /> rou water technology client Project ID Chevron#9-8632,Tracy, CA <br /> 1401 Halyard Drive, Suite 140 Matrix Soil <br /> West Sacramento, CA 95681 <br /> Attention Jason Fedora OC Sample Group 5050264, 66, 69,71, 74-75. 78-79 Reported May 19, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyri- <br /> Benzene Toluene Benzene Xylenes Diesel Diesel <br /> Method EPA 5020 EPA 8020 EPA 6020 EPA 8020 EPA 8015M EPA 8015M <br /> Analyst C Chapman C Chapman C Chapman C Chapman C Lee C Lee <br /> Concentration <br /> Spiked' 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg 7 5 mg/kg 7 5 mg/kg <br /> LCS Batch#: LCS051095 LCS051095 LCS051095 LCS051095 LCS050595 LC5051295 <br /> Date Prepared: 5/10/95 5/10/95 5/10/95 5/10/95 5/5/95 5/12/95 <br /> Date Analyzed' 5/10/95 5/10/95 5/10/95 5/10/95 5/7/95 5/17/95 <br /> Instrument LD #: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-313 GCHP-3B <br /> LCS % <br /> 49 Recovery: 90 90 90 92 125 83 <br /> Control Limits, 75-125 75-125 75.125 75-125 60-130 60-130 <br /> h <br /> MS/MSD <br /> Batch #. 5050463 5050463 5050463 5050463 5050024 5050633 <br /> Date Prepared 5/10/95 5/10/95 5/10/95 5/10/95 5/3/95 5/11/95 <br /> Date Analyzed. 5/10/95 5/10/95 5/10/95 5/10/95 5/4/95 5/12/95 <br /> Instrument I.D #. GCHP-1 GCHP-1 GCHP-1 GCHP 1 GCHP-3B GCHP-3B <br /> Matrix Spike <br /> % Recovery: 90 90 90 93 109 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery. 95 90 95 95 i01 <br /> Relative % <br /> Difference 54 00 54 2 1 7 6 <br /> SEG OIA ANALYTICAL Please Note <br /> The LCS is a control sample of known interferent tree matrix that is analyzed using the same reagents, <br /> /jy��/� preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> - - validation of sample batch results Due to matrix effects the OC limits for MS/MSD s are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results Matrix interference <br /> Project Manager 5050264 GRW <12> <br />