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1 Superior precision Ana/ ica/ /n <br /> yt c_ <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 81504 <br /> Compound Sample SPK Level SPK Result Recovery Limits RPD <br /> cont !k <br /> For Water Matrix (ug/L) <br /> ' BE161 05 02 / 03 - Sample Spiked 81500 - 05 <br /> Gasoline_Range ND 320 360/310 113/97 65-135 15 <br /> tenzene ND 20 21/21 105/105 65-135 0 <br /> roluene ND 20 21/20 105/100 65-135 5 <br /> Ethyl Benzene ND 20 21/20 105/100 65-135 5 <br /> JTotal Xylenes ND 60 67/61 112/102 65-135 g <br /> Surrogate Recoveries (t) <br /> Trifluorotoluene (SS) 95/98 50-150 <br /> 1 <br /> Itinitions <br /> 0 = Not Detected <br /> = Reporting Limit <br /> Not Analysed <br /> 2PD - 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 /> Martinez California 94553 San Francisco California 94 124 Seattle Washington 98108 <br /> (510) 229-1512 / fax (5 10) 229-1526 (41 5) 647-2081 / fax (415) 821-7123 (206) 763-2992 / fax (206) 763-8429 <br />