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Su erior Precision Ana/ tical, /nc_ <br /> p Y <br /> A member of ESSCON Environmental Support Service Consortium <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 80528 <br /> lCompound Sample SPK Level SPK Result Recovery Limits RPD <br /> cont t 'k <br /> For Water Matrix (ug/L) <br /> BB061 04 02 / 03 - Sample Spiked 80528 - 02 <br /> Gasoline Range ND 320 321/300 100/94 65-135 6 <br /> Benzene ND 20 20 3/22.5 102/113 65-135 10 <br /> Toluene ND 20 20 8/22 7 104/114 65-135 9 <br /> Ethyl Benzene ND 20 21 0/22 7 105/114 65-135 8 <br /> Total Xylenes ND 60 62 9/68 7 105/115 65-135 9 <br /> » Surrogate Recoveries « <br /> Trafluorotoluene (SS) 99/104 50-150 <br /> tf initions <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 1 555 Burke St Unit 1 309 S Cloverdale St Suite B-24 <br />' Martinez California 94553 San Francisco California 94 124 Seattle Washington 98108 <br /> fl;1 01 729-11312 / fax f'3101 779-1 S26 (41 5) 647-2081 / fax 14151 821-7 1 23 (206) 76 -7992 / fax (206) 763-8429 <br />