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KLEINFELDER <br /> 2 Due to the continuing presence of floating product in MWA, Kleinfelder recommends <br /> additional purging and removal of any product layer in MW-1 between future quarterly <br /> sampling events <br /> 3 Klelnfelder recommends conducting a one-day dual-phase (soil vapor and water) <br /> extraction test to evaluate the feasibility of remediating impacted groundwater and soils <br /> with the technology Data will be obtained by performing dual phase extraction (DPE) <br />' testing in MW-1 using a vacuum truck Please note although this is an interim measure, <br /> sites have been cleaned up using a vacuum truck over multiple events Based on evaluation <br /> of this interim measure a better understanding of the best applicable future remedial options <br />' can be assessed The results can be used to qualitatively evaluate an estimated soil <br /> permeability and a theoretical effective radius of influence (ROI) <br /> 4 Kleinfelder recommends that a copy of this report be submitted to San Joaquin County <br /> EHD 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 <br /> the 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 party (other than General <br /> Mills or regulatory agencies having enforcement lunsdiction for this site) who would like to use <br /> this report shall notify Kleinfelder, Inc of such intended use in writing for permission <br /> • <br /> 28209 T031ST05R277/DH Iv Page 10 of 31 <br /> D 2005, Kleinfeldcr Inc March 10,2005 <br />