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1 Superior Rrecisiorn 417alJam'ical ///7c_A member of ESSCON Environmental Support Service Consortium ~ <br /> Gasoline Range Petroleum hydrocarbons and BTXE <br /> 1by EPA SW-846 5030/801SM/8020 <br /> Gasoline Range quantitated as all compounds from C6-C10 <br /> Quality Assurance and Control Data <br /> Laboratory Number 81468 <br /> Compound Sample SPK Level SPK Result Recovery Limits RPD <br /> conc g <br /> For Water Matrix (ug/L) <br /> BE111 05 03 / 04 - Sample Spiked 81449 - 02 <br /> i <br /> Gasoline—Range ND 320 290/310 91/97 65-135 6 <br /> enzene ND 20 19/20 95/100 65-135 5 <br /> oluene ND 20 19/20 95/100 65-135 5 <br /> Ethyl Benzene ND 20 19/20 95/100 65-135 5 <br /> otal Xylenes ND 60 59/60 98/100 65-135 2 <br /> Surrogate Recoveries (t) << <br /> Trifluorotoluene (SS) 96/99 50-150 <br /> For Water Matrmx (ug/L) <br /> BE121 03 03 / 04 - Sample Spiked 81477 - 03 <br /> kasoline—Range ND320 300/300 94/94 65-135 0 <br /> Benzene ND 20 17/17 85/85 65-135 0 <br /> toluene ND 20 17/17 85/85 65-135 0 <br /> thyl Benzene ND 20 15/16 75/80 65-135 6 <br /> Total Xylenes ND 60 44/45 73/75 65-135 3 <br /> iSurrogate Recoveries (t) « <br /> Trifluorotoluene (SS) 97/98 50-150 <br />' For Water Matrix (ug/L) <br /> BE151 05 02 / 03 - Sample Spiked 81494 - 05 <br /> tasoli-ne—Range ND 353 294/295 83/83 65-135 0 <br /> Benzene ND 20 20/21 100/105 65-135 5 <br /> oluene ND 20 19/21 95/105 65-135 10 <br /> thyl Benzene ND 20 20/20 100/100 65-135 0 <br /> otal Xylenes ND 60 60/60 100/100 65-135 0 <br /> Surrogate Recoveries (o) << <br /> ifluorotoluene (SS) 97/102 50-150 <br /> Page 5 of 6 <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 /> 1510) 229-1512 / fax (5 10) 229-1526 (415) 647-2081 / fax f41 5) 821-7 123 (206) 763-2992 / fax (206) 763-8429 <br />