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f . Sequoia 680 OxsapealLc Dnvc Ww*od Gry CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 1900 Bates kme Swte L C.oncnrd CA 94520 (510) 686 9600 FAX(510)656-9689 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento U 95834 (916) 921.9600 FAX(916)921.0100 <br /> Trudwater 7echnologyT� Gien F'ro ct In Sa Jaaquln t �c Cemetery <br /> V 1401 Halyard Drive, Suhe 140 Matra Alr <br /> West Sacramento, CA 95691 <br /> Attention Jason Fedota QC Sample Group 5050538-541 Reported May 22, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTS Ethyl- <br /> Benzene Toluene Benzene Xylenes CO2 02 N2 <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 N/A N/A N/A <br /> Analyst. C Lee C Lee C Lee C Lee S Le S Le S Le <br /> Concentration <br /> Spiked 2 0 mg/m3 2 0 mg/ms 2 0 mg/m3 6 0 mg/ms 004 20 20 <br /> LCS Batch# LCS051095 LCSOS1095 LCSOS1095 LCS051095 N/A N/A N/A - <br /> Date Prepared: 5/10/95 5/10/95 5/10/95 5/10/95 N/A N/A N/A <br /> Date Analyzed 5/10/95 5/10/95 6/10/95 5/10/95 N/A N/A N/A <br /> Instrument LD # GCHP-2 GCHP-2 GCHP-2 GCHP-2 N/A N/A N/A <br /> LCS % <br /> Recovery 99 97 99 100 N/A N/A N/A <br /> Control Limits 75-125 75.125 75.125 75-125 N/A N/A N/A <br /> MS/MSD <br /> Batch#. BS051095 BS051095 BS051095 BS051095 BS051195 BS051195 BS051195 <br /> Date Prepared 5/10/95 5/10/95 5/10/95 5/10/95 5/11/95 5/11/95 5/11/95 <br /> Date Analyzed 5/10/95 5/10/95 5/10/95 5/10/95 5/11/95 5/11/95 5/11/95 <br /> Instrument I D # GCHP-2 GCHP-2 GCHP-2 GCHP-2 HPS-A HP8-A HP8-A <br /> Matrix Spike <br /> % Recovery 99 97 99 100 100 95 94 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 97 97 97 97 125 90 86 <br /> Relative% <br /> Difference 20 00 20 30 22 54 89 <br /> SE UOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents, <br /> �Gn preparation and analytical methods employed for the samples The LCS 96 recovery data is used fpr <br /> / validation of sample batch results Due to matrix eflecis the OC limits for MS/MSDs are advisory only <br /> Linda C Schneider and are not used to accept or refect batch results <br /> Project Manager <br /> 5050538 GRW K3> <br />