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� �� <br /> CITY OF ORONO <br /> � <br /> Work Session of the City Council and Planning 9 : 00 A. M. <br /> � Commission, November 2 , 1974 <br /> NThe City Council and Planning Commission met <br /> � on the above date with the following members <br /> present: Mayor Searles, Councilmen Butler, <br /> � Massengale, and Welsh. Absent: Councilman <br /> Paurus. Planning Commission members present: <br /> � Curtis, Gasch, Kallestad, Pesek, and Van <br /> • Nest. Absent: Chairman Guthrie, Elliott, <br /> Kullberg, and Hake. Also present: City <br /> • Administrator Benson, Building and Zoning <br /> Director Muhich, John MacLennan from <br /> � Hickok & Associates , Lyle Swanson from McCombs- <br /> Knutson, and attorney Bruce Malkerson. <br /> � <br /> MacLennan presented the surface water management STORM WATER PLAN <br /> plan put together by his firm. This is an <br /> • inventory of storm water retention and runoff <br /> as of the present and should be a useful tool <br /> • in the planning processes of the future. We <br /> should be concerned with two things, namely, <br /> the quality and quantity of storm water as it <br /> pertains to the lake. In the matter of quality, <br /> � half of the problem is septic effluent and half <br /> storm water runoff. He stated it is virtually <br /> impossible to pipe all the runoff so provision <br /> � has to be made to retain as much as possible <br /> in swamps and marshes where a natural purification <br /> S takes place. He used a test plant at Ely for an <br /> example of cost, stating it costs $800 , 000 a <br /> � year to run this small plant, whereby storm <br /> water is chemically purified with lime and <br /> � alum. He presented a base map showing natural <br /> retention and runoff in the City. Searles <br /> felt we should use this map for future development <br /> • and developers should furnish the burden of <br /> proof if they do not concur with it. MacLennan <br /> � now showed examples of using tables presented <br /> with base map to find the runoff co-efficient <br /> � based on quantity as of the present. In conjunction <br /> with municipality management, the function of the <br /> Lake Minnetonka Conservation District is to <br /> regulate the runoff from one municipality to the <br /> � other. <br /> He now presented another map showing the marshes <br /> � in the City with code numbers. This will be <br /> used to study the relationship between development <br /> � and pollution. Van Nest felt we have to continue <br /> to make better definitives for marsh areas. <br /> � Discussion was held on the use of zoning in wetland <br /> control or regulations such as our present Ordinance <br /> � No. 125. The attorney opined that good definitions <br /> , are better than using a case-by-case basis . <br /> � <br />