Laserfiche WebLink
5.0 CONCLUSIONS <br /> Groundwater elevations recorded during the First Quarter 2005 sampling were an average 0 70 feet <br />' higher than those recorded during the Fourth Quarter 2004 sampling The rise in groundwater <br /> elevation is typical to historical data for the same time period <br /> Contaminant concentrations in groundwater at the Site have decreased significantly It is apparent <br /> that the remedial systems are effective at removing contaminant mass from groundwater Residual <br />' contaminants in groundwater in the First Quarter 2005 that exceed the respective Maximum <br /> Contaminant Limits (MCLS) are limited to wells MW-1, MW-3, and MW-5 Well MW-5 is offsite <br />' and downgradient of wells MW-I and MW-3 The contaminants of concern are benzene (MW-3 at <br /> 910 ug/1 and MW-1 at 45 ug/1), and MTBE (MW-5 at 15 ug/1) <br />' The mass removal calculations indicate that through January 4, 2005, the SVE system has removed <br /> approximately 17,617 pounds of TPHg, 386 pounds of benzene and 8 1 pounds of MTBE The SVE <br />' system continues to remove contaminant mass from the vadose zone at an average rate for the <br /> reporting period of 5 0 pounds per day <br /> i <br /> i <br /> i <br /> 1 <br /> i <br /> 1 <br /> Project No 58643-06-01 -10- February 14 2005 <br />