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1 Superior PreCisior7 Ana/ytica/, /nc. <br /> A member of ESSCON Environmental Support Service Consortium <br /> Gasoline Range Petroleum Hydrocarbons and BTXE <br /> by EPA SW-646 5030/8015M/8020 <br /> Gasoline Range quantitated as all compounds from C6-C10 <br /> Quality Assurance and Control Data <br /> Laboratory Number 81466 <br /> Method Blank(s) <br /> BE111 05-05 BE121 03-01 BE151 05-01 <br /> ' Conc RL Conc RL Conc RL <br /> ug/L ug/L ug/L <br /> Gasoline Range ND 50 ND 50 ND 50 <br /> tenzene ND 0 5 ND 0 5 ND 0 5 <br /> luene ND 0 5 ND 0 5 ND 0 5 <br /> Ethyl Benzene ND 0 5 ND 0 5 ND 0 5 <br /> total Xylenes ND 0 5 ND 0 5 ND 0 5 <br /> >> Surrogate Recoveries ( ) « <br /> �rifluorotoluene (SS) 103 9B 107 <br /> r <br /> r <br /> Page 4 of 6 <br /> Certified Laboratories <br /> 825 Arnold Dr Suite 1 14 1 555 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 (510) 229-1526 (415) 647-2081 / fax (4 15) 821-7123 (206) 763-2992 / fax {206) 763-8429 <br />