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We believe the BTEX chemicals will be destroyed by micro-organisms in the water and <br /> Inone will exist beyond 700 feet, even if the water becomes more contaminated <br /> Dissolved oxygen levels were recorded this quarter at this site The levels were <br /> measured with a calibrated YSI model 51 B meter by placing the sensor 5 feet below the <br /> If surface of the water table after the bailing of the wells The measured levels are shown <br /> on Table 3A <br /> VAPOR EXTRACTION SYSTEM <br /> A total of 46628 pounds of gasoline has been removed since the beginning of this project <br /> See Table 5 <br /> IConclusions <br /> We will continue to monitor this site The next monitoring event will take place in October <br /> 2003 <br /> I Yours truly, <br /> GC'G{v <br /> /John <br /> HeCussen No.6506 <br /> RG #6506 <br />' Enclosures OF CPL1F���P <br /> 6 Tables <br /> 4 Figures <br /> 2 Laboratory Reports and Chain of Custodies <br /> 13 Sample Sheets <br /> cc Mr Roger Liston, Darpetro, Inc <br /> Mr G L Boggs, RWQCB <br /> I <br /> 2 <br /> I <br />