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SUPERIOR ANALYTICAL LABORATORIES, INC. <br /> 825 ARNOLD, STE 114 - MARTINEZ, CALIFORNIA 94553 - (415) 229-1512 ©CHS #319 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> L 1BOR;TOgY '110 83333 DATE RECEIAfED- 06/12/91 <br /> CLXENT• Harding Lawson Associates , Concord D."�TE REPORTED: 06/19/91 <br /> CLIENT JOB NO. 1706002503 <br /> 1NALYSIS FOR TOTAL PETROLEUM HYDROC .:?BONS <br /> r- Modlfzed EPA SW-846 Method 5030 and 8015 <br /> LAB Concentration ( mg/L ) <br /> Sample Identification Gasoline Range <br /> 2 MW-3 ND<0 . 05 <br /> 3 MW-1 NDe0 . 05 <br /> 2 4w-6 `TD<0 . 05 <br /> 5 MW-12 ND<0 05 <br /> 6 4W-13 NDe0 . 05 <br /> 7 Mw-14 ND<0 . 05 <br /> 8 MW-1 0 69 <br /> 9 MW-5 ND<0 . 05 <br /> 10 MW-8 8 0 <br /> 11 MW-9 f19 <br /> 12 MW--10 100 <br /> 13 MW-11 ND<0 . 05 <br /> 14 MW-15 ND-�0 . 05 <br /> 15 4W-16 0 . 68 <br /> 16 MW-17 ND<0 . 05 <br /> mg/L - parts per million (ppm) <br /> Method Detection Limit for Gasoline in Water: 0 .05 mg/L <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L: RPD Gasoline = <15 <br /> MS/MSD Average Recovery = 94%, Duplicate RPD = 7 <br /> Richard Srna, Ph.D. <br /> Laboratory Manager <br /> OUTSTANDING QUALITY AND SERVICE <br />