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16 <br /> SUPERIOR ANALYTICAL LABORATORY, INC <br /> 1385 FAIRFAX ST, STE D - SAN FRANCISCO, CA 94124 - PHONE (415) 647--2081 <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO. : 51384 DATE RECEIVED: 11 /20/89 <br /> CLIENT: Leedshill -- Herkenhoff. Inc. DATE REPORTED: 11 /29/89 <br /> CLIENT JOB NO. : 9832 . 12 <br /> ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br /> by Modified EPA SW-846 Method 5030 and 8015 <br /> LAB Concentration (mg/kg) <br /> # Sample Identification Gasoline Range <br /> 1- 11-17-89-TB5-2 ND< 1 <br /> 2 11-17-89-TB5-5 300 <br /> 4 11-17-89-TB5-15 12000 <br /> 6 11-17-89-TB5-25 10 <br /> 7 11-17-89-TB5-30 ND< 1 <br /> 9 11-17-89-TB5-40 ND< 1 <br /> 10 11 -16-89-TB6-2 ND< 1 <br /> 11 11-16-89-TB6-5 ND< 1 <br /> 13 11-16-89-TB6-15 ND<1 <br /> 15 11-16-89-TB6-25 ND< 1 <br /> 16 11-16-89-TB6-30 ND< 1 <br /> 18 11-16-89-TB6-40 ND<1 <br /> 19 11-16-89-TB7-2 ND< 1 <br /> 20 11 -16-89-TB7-5 ND< 1 <br /> 22 11-16-89-TB7-15 ND<1 <br /> 24 11-16-89-TB7-25 ND< 1 <br /> 25 11-16-89--TB7-30 ND<1 <br /> 27 1 1-16--89-TB7-40 ND< 1 <br /> 28 11-16-89-TB8-2 ND< 1 <br /> 29 11-16-89-TB8-5 ND< 1 <br /> 31 11 -16-89-TB8-15 ND< 1 <br /> 33 11-16-89-TB8-25 ND< 1 <br /> 34 1 1-16-89-TB8--30 ND< 1 <br /> 35 11-17-89-TB9-2 ND< 1 <br /> 36 11-17-89-TB9-5 ND< 1 <br /> 38 11-17-89-TB9-15 ND< 1 <br /> 40 11 -17-89-TB9-25 ND< 1 <br /> 41 11-17-89-T89-30 ND< 1 <br /> mg/kg - parts per million (ppm) <br /> Minimum Detection Limit for Gasoline in Soil : lmg/kg <br /> QAQC Summary: <br /> Daily Standard run at 2mg/L : RPD Gasoline = < 15% <br /> MS/MSD Average Recovery = 93%: Duplicate RPD = 15% <br /> Richard Sana. Ph.D. <br /> La-boratorD+ 4r- fto <br /> Y <br /> OUTSTANDING QUALITY AND SERVICE <br />