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WILLIAM J. HUNTER & ASSOC. <br /> Aeg <br /> George Lechich - Valley Showcase <br /> 913 Fremont St., Stockton, California <br /> i <br /> TEG PROJECT#51127E <br /> QAIQC DATA-7 MATRIX SPIKE ANALYSES - WATERS <br /> DATE GASOLINE BENZENE TOLUENE ETHYLBNZ XYLENES <br /> ANALYZED ug/J ug/J ug/I ug/1 ug/1 <br /> Spiked Conc. 11/27/95 2000 5.00 5.00 5.00 15.00 <br /> Measured Conc. 2199 5.31 5.11 4.59 15.23 <br /> % Recovery 110.0% 106.2% 102.2% 91.8% 101.5% <br /> Spiked Conc, 11/27/95 2000 5.00 5.00 5.00 15.00 <br /> Measured Conc, 1973 5.14 5.24 4.88 15.50 <br /> %Recovery 98.7% 102.6% 104.8% 97.6% 103.3% <br /> RPD 10.8% 3.3% 2.5% 6.1% 1.8% <br /> Spiked Conc. 11/28/95 2000 5.00 5.00 5.00 15.00 <br /> Measured Conc. 2130 4.63 4.44 4.64 15.27 <br /> %Recovery 106.5% 92.6% 88.8% 92,8% 101.8% <br /> Spiked Conc. 11/28/95 2000 5.00 5.00 5.00 15.00 <br /> Measured Conc. 2067 4.94 4.65 4.79 13,80 <br /> %Recovery 103.4% 98.8% 93.0% 95.8% 92.0% <br /> RPD 3.0% 6.5% 4.6% 3.2% 10.1% <br /> I <br /> ACCEPTABLE RPD LIMIT= 15% i <br /> ANALYSES PERFORMED IN TEG's DNS CERTIFIED MOBILE LAB (#2012) <br /> ANALYSES PERFORMED BY; Mr. Henry Wilkinson <br /> DATA REVIEWED BY.- Mr, Mark Jerpbak i.,• <br /> -ZlZy G7 <br /> • <br /> Transglobal Environmental Geochemistry <br /> PQ Box 162580, Sacramento, CA 95816 Phone: (916) 736-3233 Fax: (916) 452-5806 <br />