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Superior /�recisior� Ana/ytica/, /r7C- <br /> A member of ESSCON Environmental Support Service Consortium �M <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: 50396 <br /> Compound Sample SPK Level SPK Result Recovery Limits RPD <br /> conc. ,� $ <br /> For Water Matrix (ug/L) <br /> BB021.19 04 / 05 - Sample Spiked: 50365 - 02 <br /> Gasoline—Range ND 180 194/182 108/101 65-135 7 <br /> Benzene ND 10 9.07/8.98 91/90 65-135 1 <br /> Toluene ND 10 9.54/9.33 95/93 65-135 2 <br /> Ethyl Benzene ND 10 9.42/9.28 94/93 65-135 1 <br /> Total Xylenes ND 30 29.4/28.5 98/95 65-135 3 <br /> >> Surrogate Recoveries ($) << <br /> orifluorotoluene (SS) 96/96 50-150 <br /> Definitions: <br /> ND = Not Detected <br /> RL - Reporting Limit <br /> NA = Not Analysed <br /> RPD = Relative Percent Difference <br /> ug/L = parts per billion (ppb) ug/kg parts per billion (ppb) <br /> m <br /> g/L = parts per million (ppm) mg/kg = parts per million (ppm) <br /> 101 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 /> Martinez California 94553 San Francisco, California 94124 Seattle Washington 98108 <br /> (510) 229-1512 /fax (5101229-1526 (415) 647-2081 /fax (415) 821-7123 (2061 763-2992 /fax (206) 763-8429 <br />