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Superior I7recisiorl` Ana/YtiCa/, /nc. <br /> . <br /> A member of ESSCON Environmental Support Service Consortium <br /> 6 <br /> Gasoline Range Petroleum Hydrocarbons and BTXE <br /> by EPA SW-846 5030/8015M/8020 <br /> Gasoline Range quantitated as all compounds from C6-C10 <br /> ' Quality Assurance and Control Data <br /> Laboratory Number 81494 <br /> 'Compound Sample SPK Level SPK Result Recovery Limits RPD <br /> conc g96 <br /> For Water Matrix (ug/L) <br /> BE121 05 02 / 03 - Sample Spiked 81468 - 01 <br /> Gasoline—Range ND 320 270/290 84/91 65-135 8 <br /> Benzene ND 20 20/19 100/95 65-135 5 <br /> oluene 0 8 20 20/20 96/96 65-135 0 <br /> Ethyl Benzene ND 20 20/20 100/100 65-135 0 <br />��Total Xylenes 2 1 60 63/61 102/98 65-135 4 <br /> Surrogate Recoveries <br /> Trifluorotoluene (SS) 98/98 50-150 <br /> For Water Matrix (ug/L) <br /> BE121.05 10 / 10 - Sample Spiked 81494 - 01 <br /> Gasoline_Range ND 320 290/290 91/91 65-135 0 <br />'Benzene ND 20 19/19 95/95 65-135 0 <br /> Toluene ND 20 20/20 100/100 65-135 0 <br /> Ethyl Benzene ND 20 20/20 100/100 65-135 0 <br /> Total Xylenes ND 60 58/58 97/97 65-135 0 <br /> Surrogate Recoveries ($) << <br /> Trifluorotoluene (SS) 101/101 50-150 <br /> ifinitions <br /> ND = Not Detected <br /> = Reporting Limit <br /> Not Analysed <br /> RPD = Relative Percent Difference <br /> /L = parts per billion (ppb) ug/kg = parts per billion (ppb) <br /> /L = parts per million (ppm) mg/kg = parts per million (ppm) <br /> Page 5 of 5 <br /> Certified laboratories <br /> 825 Arnold Dr Suite 1 14 1555 Burke St Unit 1 309 S Cloverdale St Suite B-24 <br /> Marttnez California 94553 San Francisco California 94124 Seattle Washington 98108 <br /> 1(510) 229-1512 / fax (510) 229-1526 (41 5) 647-2081 / fax (415) 821-7123 (206) 763-2992 / fax (206) 763-8429 <br />