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4 <br /> levels, there are no apparent lateral conduits to allow it to migrate any distance from the <br /> source - the removed UST's. <br /> RECOMMENDATION: <br /> Based upon all of the data collected and analyzed to date, this site must be classified as <br /> very"low risk." There are no domestic wells within 250 feet of the source, and to the <br /> best of our knowledge, diesel compounds have never migrated that distance, especially <br /> where the transmissivity is extremely low and the aquifers are of limited extent. <br /> We do not believe that any further work is warranted, and find it difficult to understand <br /> the reluctance of the County EHD staff to close this site. <br /> We again recommend that the existing wells be destroyed, the ground restored to it <br /> original condition, and the site be closed. <br /> UV <br /> W n er&Associates <br /> C : Jo Marti <br /> rrison Law Corp. <br /> RWQCB <br /> F-D G�p�oC,� <br /> WFIAM J.HUNTER <br /> . ��t obs a/yr <br /> NO.860 <br /> OF CAUF����R <br /> K <br /> Ar— <br /> L) <br /> 2 <br />