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4> <br /> • 19 July 1995 <br /> AGE-NC-95-0109 <br /> Page 2 of 8 <br /> To further demonstrate the effectiveness of bioremediation, nucrobial inoculum was added to drums <br /> that contained soil cuttings and purge water from subsurface investigation activities over the past few <br /> years Subsequent sampling and analysis of soil and water samples indicated a significant degradation <br /> of hydrocarbons <br /> Based upon the results of the pilot study and the drum treatment, a full-scale soil inoculation was <br /> initiated by GeoAudrt in August 1994 Approximately 1,200 gallons of moculum were introduced into <br /> the wells on-site A total of rune monitoring wells, one extraction well and six remediation wells were <br /> inoculated Details of the inoculation procedure were reported in the September 1994 Quarterly <br /> Report of GeoAudrt <br /> Between 13 and 15 July 1994, a series of aquifer tests was performed at the site The procedures, <br /> results and conclusions of the aquifer testing were detailed in the September 1994 Quarterly Report <br /> of GeoAudrt <br /> 3.0. PROCEDURES <br /> 3 1 MONITORING OF MICROBIOLOGICAL ACTIVITIES IN GROUND WATER <br /> Ground water samples were collected from MW-6, MW-7, MW-10, MW-I 1, MW-13, MW-14 and <br /> EW-1 on 18 May and MW-6 through MW-14 and EW-1 on 12 June 1995 Samples were also <br /> collected in April 1995,but the VOA vials were broken during transmission to the laboratory Each <br /> sample was collected for analysis of dissolved oxygen, pH, electrical conductivity (EC) and for <br /> mmcrobiological enumeration Table 1 summarizes the results of theses activities through 13 March <br /> 1995 <br /> Following procedures described in Section 3 4 , samples for microbiological evaluation were collected <br /> in non-preserved 40-m1 VOA vials and transported to Mdwest Laboratory, Inc in Omaha, Nebraska <br /> 3 2 SOEL VAPOR MONITORING <br /> Seven remediation wells (VW-1 through VW-7), five monitoring wells, which are presently dry <br /> (MW-1 through MW-5), and MW-14 are connected to a low-pressure blower that provides oxygen <br /> (air) to all wells, except to MW-I and MW-2, on a continuous basis <br /> Oxygen, carbon dioxide and organic vapors were measured once each month using field instruments <br /> However, because of equipment malfunction, no vapor samples were collected in June 1995 <br />. Samples will be collected twice in July 1995 and reported in a subsequent report Percent oxygen <br />