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GeofoguafTecfrnus lix Page 5 <br /> Groundwater Monitoring Report <br /> Pigject No 724 2 <br /> April 11, 2001 <br /> Oxidation/Reduction Potential (ORP) measurements (Table 5) corroborate the lab analysis <br /> and show that only MW-5, MW-6 & MW-7 have normal ORP The negative ORP values <br /> observed in the rest of the wells show that they are either within the core of the <br /> contamination plume or are in the reaction/depletion shadow down gradient of the plume <br /> 3.4 RECOMMENDATIONS <br /> GTI makes the following recommendations <br /> • Continue monitoring for two more quarters to determine contaimnant trends <br /> 0 Perform fate and transport modeling to determine risk to off site receptors <br /> 4.0 LIMITATIONS <br /> This report was prepared in accordance with the accepted standards and practices of the <br /> field of environmental geology, groundwater hydrology and good,business practices It <br /> should be recognized that definition and evaluation of environmental conditions is a <br /> difficult and an inexact science Judgments leading to conclusions and recommendations <br /> are generally made with an incomplete knowledge of the site-specific conditions present <br /> tThe tasks proposed and completed during this project were reviewed and approved by the <br /> local regulatory agency for compliance with the law No warranty, expressed or implied, is <br />' made <br /> 1 <br />