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Storm WaLor and WvtlAnd Manade-ment Plan <br />Novemher 14, 1985 <br />million (nor intludinn land or e,n;.tm..nt costs), thr <br />existing storm sewer syo em can no improved to <br />handler storms with a frequency of once every 5 years <br />and a duration of one hour. The Pity presently uses <br />the Johnson Plan as a guidu for storm sewer <br />improvements. The City constructs the proposed <br />improvements at the same time as street repairs in <br />order to Aivo xlreet reconstruction Costs. Since <br />the plan was written, the City has improved the <br />storm sewers on F,dgPwood Drive from County Road H to <br />County Road H-2, County Road I from Silver Lake Road <br />to 'r.H. 10, and 0utn,-y street from County Road 11-2 <br />to Ilillview Road. The cost for these storm sewer <br />improvements was paid for by Municipal State Aid <br />(MSA) because the work wns dnne on MSA do0rInatod <br />streets during ternn Firwrion d thee:.• mlioot% rh,. <br />City also contructed a storm water detention pond In <br />Random Park as part of the, improiements to that <br />tin, k. <br />c) Wetland Preservation/Maintenance <br />In December, 1981, Ramsey Soil and Water <br />Conservation District prepared a Wetland Inventory <br />for the City of Mounds View. In October, 1982, the <br />City's Wetland Zoning Ordinance was adopted. The <br />purpose of the Wetland Zoning Ordinance is to <br />preserve wetlands in as natural a State as possinln, <br />serve as natural retention and detention areas for <br />Surface wAtPrs, and prevent damage from excessive <br />sueilmentation, outrophicatto,t n Polltitl— <br />Wetlands fill in if left in a natural state for a <br />long period of time. The purpose of the wetland <br />plan is to maintain the wetlands in as natural a <br />state as possible (i.e., maintain existing <br />conditions). <br />2. Problem Statement <br />This report discusses Ann proposes solutions to the <br />following problems: <br />a) Existing Storm sewers have inadequate capacity <br />according to the Johnson Plan. <br />b) Low land areas (where storm wa her rollerts, ponds <br />and infiltrates into the ground) that are filled, <br />reduw- the capacity of storm sewers. <br />c) The discharge of ground water that has been used Fur <br />heating and cooling buildings reduces the capacity <br />of storm sewers. <br />- l - <br />