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• 0 <br /> B. Groundwater <br /> Design and install complete goundwater monitoring program. <br /> Design and implement a detection survey as specified in 40 CFR <br /> 264. 98. <br /> Design and implement a program to determine background water <br /> quality. <br /> Establish piezometric data relative to shallow and regional aquifers. <br /> Establish data on vertical quality and head difference in areas <br /> of contamination. <br /> Establish horizontal contamination plume delineation through staged <br /> well placement radiating out from Well Number 6 to define <br /> contaminant migration both lateral and parallel to the regional <br /> flow system. <br /> Develop data on fluid quality within vadose zone attendent to retort <br /> through use of pressure/vacuum lysimeters. <br /> C. Sources of Contamination <br /> Define horizontal and vertical extent of all soil contamination <br /> through a comprehensive boring and sampling program. The boring <br /> program will include the soil under the stormwater pond. <br /> II - Remedial Phase <br /> A. Sources of Contamination <br /> Seal retort pit with reinforced concrete and lining material <br /> compatible with treating solution. <br /> Install early leak detection system under retort. <br /> Seal stormwater pond with double Hypalon liner. <br /> Install early leak detection system under pond. <br /> Alter treatment and storage process to significantly reduce potential <br /> for contamination of surface water run-off . <br /> B. Clean-up of Existing Contamination <br /> 1. Groundwater <br /> Design, install and operate an ongoing groundwater clean-up <br /> system which will draw contaminated water to the surface for <br /> treatment and subsequent discharge offsite or discharge back to <br /> the aquifer through an injection well system. <br />