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0 r• <br /> CAMBRIA <br /> GROUNDWATER REMEDIATION <br /> Interim Groundwater Remediation. Blaine began weekly purging of onsite monitoring well <br /> MW-1 on November 10, 1998 and onsite extraction well EW-1 on March 11, 1999 This practice <br /> continued until the groundwater extraction(GWE)system was started during March 2000 <br /> Groundwater Remediation System Operation. Cambria installed a GWE system at this site <br /> which began operation in March 2000 and was shut down in July 2001 Hydrocarbon and MTBE <br /> concentrations have been substantially reduced in groundwater beneath the site The GWE <br /> system extracted groundwater from well EW-1 at approximately five gallons per minute An <br /> estimate of contaminant mass removed by the GWE system is summarized in the following table <br /> MASS REMOVAL BY GROUNDWATER EXTRACTION <br /> Constituent Total Removed <br /> Total Hydrocarbons 18 pounds <br /> . MTBE 15 2 pounds <br /> Water 2,295,500 gallons <br /> ANTICIPATED FOURTH QUARTER 2004 ACTIVITIES <br /> Blaine will gauge and sample the site wells according to the existing sampling schedule and <br /> tabulate the data Cambria will prepare a groundwater monitoring report Groundwater samples <br /> will be collected monthly from well MW-6A and these data will be reported via facsimile as we <br /> receive them from the lab <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Groundwater analytical data from all of the wells at this site continue to show a declining or <br /> stable trend <br /> 0324 2 <br />