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' S[f erior PreCisior7 Ar7a/ tical //7C.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: 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 (%) <<rifluorotoluene (SS) 96/96 50-150 <br /> 1 <br />�finitions: <br /> Not Detected <br /> RL = Reporting Limit <br /> JANot Analysed <br /> D = Relative Percent Difference <br /> ug/L = parts per billion (ppb) ug/kg = parts per billion (ppb) <br /> g/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 94124 Seattle Washington 98108 <br /> 1;1 ni 779-1 S 12 / fax 151 01 779-1 57h f4 151 647-208 I / fax (4 1 5) 87 1-71 23 170(-)1 76 -7997 / fix f706) 7h3-8479 <br />