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Eli <br /> Union Ice Plant <br /> Phase I & 11 Remedial Investigation Plan <br /> Page: 4 <br /> with concrete grout, after a bentonite seal has been <br /> placed. The boring for the monitoring well will be of <br /> a diameter at least 4 inches greater than the 2 inch <br /> diameter of the well casing to be used. <br /> The cuttings from the drilling operation will be <br /> containerized on-site during drilling for proper <br /> disposition. The proper method' of disposal will be <br /> 0 dependent upon results of laboratory analysis. this <br /> disposal will be the responsibility of the client <br /> unless other arrangements have been made. <br /> 3.2 Well Construction <br /> All materials used in well construction will be <br /> thoroughly cleaned prior to introduction into the <br /> boring. A bentonite or cement and bentonite grout <br /> will be placed at the bottom of the boring as <br /> necessary. After the seal has been allowed to set <br /> long enough to support the weight of the casing, a 2- <br /> inch diameter well casing (stainless steel or PVC) <br /> with end cap and factory perforations for placement in <br /> the saturated zone (taking into account seasonal <br /> variation) will be placed in the boring. The screen <br /> and filter pack sizes will be as noted in the well <br /> �S construction drawing. The casing and end caps will be <br /> threaded or joined by stainless steel screws, no PVC <br /> cement will be used. The filter pack will extend two <br /> feet above the perforated zone. A bentonite seal 2- <br /> to 3-feet thick will be placed in the annular space <br /> above the filter pack followed by a cement grout to <br /> the surface. Seal and filter pack elevations may <br /> change based on the underlying geology (Figure 5). <br /> 3.3 Well Development and Sampling <br /> The well will be developed until the well water <br /> appears clear of sediment of until an appropriate <br /> number of well volumes (based upon the judgement of <br /> the responsible professional) have been evacuated. <br /> The water produced during well development will be <br /> ----------------------------- <br /> containerized and left on-site in 55-gallon drums or <br /> -----other-suitable-containers-for-disposal--as-bazar ous - -- --- <br />