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A Wasle Managemenl ~,ompal~y <br /> <br />Construction Materials <br /> <br />Wells will be constructed in accordance with Minnesota Health <br />Department Codes for Water Well Construction. Collection <br />piping will be high density polyethylene (HDPE) or polyvinyl <br />chloride (PVC) with precast concrete manholes. The air <br />strippers and carbon filter units will be constructed of PVC. <br />The lift station, wash water sump and discharge sump will be <br />constructed of poured in place concrete or precast concrete <br />manhole sections. The discharge pipe will be a 15 inch HDPE <br />pipe with precast concrete manholes. The 36 inch storm sewer <br />will be constructed of precast concrete pipe with precast <br />concrete manholes. <br /> <br />12. Neighborhood Meeting <br /> <br />WFIMI contacted Sharon Dahlgren, a resident of the Hunter Hills <br />Subdivision, regarding a neighborhood meeting. Ms. Dahlgren <br />was responsible for contacting nearby residents and inform <br />them of the meeting. The informational meeting was held on <br />March 6, 1991 to present the plans for the proposed pump-out <br />and treatment facility to area residents. The meeting <br />included a presentation by W~I that explained the need for <br />the pump-out and treatment system and the systems design. The <br />majority of meeting consisted of an informal discussion that <br />allowed residents to state their concerns and have their <br />questions answered. The following concerns were addressed at <br />the meeting: <br /> <br />a. Screening <br /> <br />~.~[I will plant pine trees or other suitable species <br />on the south and east sides of the treatment <br />facility to provide additional screening in the <br />event that the oaks in the area die from oak wilt. <br /> <br />b. Residential Wells <br /> <br />~.~.[I has performed extensive groundwater modeling <br />to determine the effects of the groundwater pump- <br />out system on local groundwater conditions. In a <br />report titled "Aquifer Analysis", dated May 1989, <br />~.~I evaluated the effects pumping would' have on <br />groundwater elevations using a variety of pumping <br />rates. Based on this data the maximum drawdown at <br />the recovery wells is estimated to be 5.5 feet. The <br />amount of drawdo~ decreases as you move further <br />away from the wells. Data from test wells show that <br />drawdowns of less then 0.5 feet occur 100 feet from <br /> <br />4 <br /> <br /> <br />