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KLEINFELDER <br /> sampling event being the lowest groundwater elevation since sampling began in June 2000 <br /> Similar trends were noted in the other three perimeter monitoring wells over the past sampling <br /> ' events <br />' 6 2 RECOMMENDATIONS <br />' Based on the data obtained during this assessment, Kleinfelder makes the following <br /> recommendations <br />' 1 Continue quarterly monitoring of the existing monitoring wells (MW-1, MW-2, MW-3, and <br /> MW-4) <br />' 2 Due to the continuing presence of floating product in MW-1, Kleinfelder recommends <br /> additional purging and removal of any product layer in MW-1 between quarterly sampling <br /> events <br /> 3 Kleinfelder recommends performing a linuted pump test in monitoring well MW-1 to assess <br /> groundwater hydraulic properties such as draw down, hydraulic conductivity and estimating a <br />' radius of influence to pumping This information would be useful in evaluating potential <br /> remedial efforts Kleinfelder recommends initially purging any product layer from the well <br /> prior to conducting the pump test During the pump test, purge water should be filtered through <br /> a carbon filter media followed by containment Testing of the effluent is recommended to <br /> assess potential disposal options of the contained groundwater <br />' 4 Kleinfelder recommends that a copy of this report be submitted to San Joaquin County EHD <br /> and the CVRWQCB for their review and comment <br />' 5 The purge water currently stored on-site should be evaluated and properly disposed of by the <br /> Client Kleinfelder can assist the Client in the disposal process at an additional charge if <br />' requested by the client <br /> This report, and the conclusions and recommendations presented in this Executive Summary, are <br />' subject to the "Limitations" presented in Chapter 7 of this report Any other party (other than <br /> General Mills or regulatory agencies having enforcement jurisdiction for this site) who would <br /> like to use this report shall notify Kleinfelder, Inc of such intended use by executing the <br />' "Application for Authorization to Use" which is included as an appendix to this report <br /> 28209 To3/ST03R1811 Page €0 of 11 <br />' ©2101 Kletnfelder, Inc December 29,2003 <br />