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"i ter; <br /> .. r�+'i4274F1-2:.?, <br /> �. A ,1 State of Wisconsin DEPARTMENT OF NATURAL RESOURCES <br /> outhern District Carroll D.Besadny <br /> 3911 Fish Hatchery Road secretary <br /> 4r, Fitchburg, Wisconsin 53711 <br /> January 23, 1985 3480 <br /> . • <br /> Mr. Orville W. Hintz <br /> Environmental Health, Dane County �tr� <br /> 1206 Northport Drive I%� vqy ` <br /> Madison, Wisconsin 53704 CoG �O <br /> • <br /> Dear Orville: 'moo <br /> Re: Corn silage stack, CTH "N" South of Cottage Grove °�`��$j <br /> Your concerns about water pollution and odor problems arising from the <br /> leachate collection system from corn silage stacks are shared by this <br /> Iii Department. <br /> AO <br /> During the past few years , the Department has documented a number of <br /> cases of both groundwater and surface water pollution from corn silage <br /> stack leachate. We have sent out informational questionnaires to canning <br /> - companies to try and determine the best way to regulate the disposal of <br /> } leachate. <br /> It is my understanding that the Fredenburg g farm located on CTH "N" about <br /> 11/2 miles south of Cottage Grove is being zoned to a different classification. <br /> This farm receives the corn silage from the Oconomowoc Canning Company <br /> at Sun Prairie. The Department has received complaints relative to odor <br /> problems . Investigation also revealed that the collection ponds for <br /> leachate are constructed in native soil (sand and gravel ) . If zoning <br /> regulations can be adopted for this farm, the following should be useful <br /> in controlling water pollution and odor problems. <br /> 1. Conditional use permits requiring that silage stacks have <br /> restrictions with respect to distance from subdivisions or <br /> li <br /> 3== places of habitation. <br /> 2. Design structures and sealing of lagoons for leachate collection <br /> be in compliance with at least the minimum <br /> requirements of the <br /> SCS technical guide Section IV which became effective on <br /> November 1, 1983. <br /> 11, 3. A land management program for the final disposal of leachate <br /> to cropland should be implemented to insure adequate distribution. <br /> ; This should be based on hydraulic application rate and nitrogen <br /> ,K <br /> crop uptake. <br />