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' eclal Technics Inc Pa e 4 <br /> � o� g <br /> Groundwater Momitonng Report <br /> Project No 662 2 <br /> June I 2,2ao I <br /> • The direction of groundwater for the April 2001 event was to the north, which may be <br /> anomalous for the site history It is noted that well MW-1 was down gradient of the <br /> former UST field for this event The contaminant concentrations in well MW-1 <br /> decreased slightly from the February 2001 event, and this does not support a conclusion <br /> that the plume is now heading to the north toward well MW-1 <br /> ' The lateral extent of the contamination is only pg defined u radient to the northwest b MW- <br /> 2 The vertical extent has not been defined <br /> ' T <br /> G I makes the following recommendations <br /> ' • Perforin additional groundwater monitoring and groundwater investigation by installing <br /> additional monitoring wells to define the lateral and vertical extent of the plume and to <br /> evaluate the mass of contaminants present <br /> • A risk assessment should also be performed to evaluate the threat that the MTBE poses <br /> to public health <br /> 3.0 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 /> 1 The 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 />