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The shallow groundwater aquifer at the site consists of a very <br /> thin lens of salt, sand, gravel and clay. Whale limited informa- <br /> tion is available regarding the specific site lithology, it is <br /> Jexpected that this water bearing zone possesses low <br /> j, ;3 transmissivit.y and a relatively slow velocity. However, <br /> interconnections, if any, between the shallow aquifer and deeper <br /> C 1 water bearing zones remain unknown. Additionally, due to the <br /> � ' site's proximity to the port of Stocktun, the groundwater flow <br /> direction may fluctuate from tidal effects. <br /> Based on the known site conditions, the lack of beneficial usages <br /> �- of the shallow aquifer and the high cost of groundwater <br /> treatment, it is not recommended that groundwater remediation be <br /> attempted at the site. However, it is recommended that a limited <br /> PUMP test of one well be conducted to determine if the <br /> ,., sustainable yield capacity of the aquifer system is less than 200 <br /> gallon per day. This information will assist the regulatory <br /> ' agencies to assess the usability of the aquifer in question. <br /> However, the possibility exists that addition plume definition and <br /> site lithology information may be required <br /> prior to site closure. <br /> While these recommendations are based on generally accepted <br /> •. practices, actual cleanup levels and methods must be approved by <br /> the regulatory agencies to ensure clef,n closure of the site. <br /> r <br /> j <br /> Ywr <br />