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Superior Precisia n Analytical, Inc. <br />A member of ESSCON Environmental Support Service Consortium <br />40 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 />Qualxty Assurance and Control Data <br />Laboratory Number. 81907 <br />Method Blank(s) <br />BF191.05-03 <br />Conc RL <br />ug/L <br />Gasoline—Range ND 50 <br />Benzene ND 0 5 <br />Toluene ND 0 5 <br />Ethyl Benzene ND 0 5 <br />Total Xylenes ND 0.5 <br />» Surrogate Recoveries (%) << <br />Trifluorotoluene (SS) 100 <br />• <br />Page 4 of 5 <br />Certified Laboratories <br />825 Arnold Dr, Suite 1 14 1555 Burke St Unit 1 309 S Cloverdale St Suite 8-24 <br />Martinez California 94553 San Francisco California 94124 Seattle, Washington 98108 <br />rc t ni -»n i c; i'? / fay (E; i m 77c) -i c;7r 141 1;1 647-70R I / fpx f41 51 821-7123 12061 763-2992 / fax (206� 763-8429 <br />