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CMP Part 3A. Environmental Protection Plan
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<br /> The result of extended retention will be improved lake water quality. The
<br /> use of supplementarv pondin� or other management practices for pre-
<br /> treatment of stormwater upstream of wetlands will be required for new
<br /> development. and will be added to serve existing development when
<br /> practical and feasible, but will not provide a basis for overall density
<br /> increases in Orono.
<br /> 5. Natural drainageways will be favored over artificial storm sewers.
<br /> Storm sewers increase the speed and concentration of runoff and provide
<br /> no natural filtration or nutrient assimilation. Storm sewers will only be
<br /> utilized in local flood prone areas or where there is soil erosion insolvable
<br /> by natural means. Whenever possible, storm sewer outlets will be
<br /> directed to pre-treatment facilities or natural
<br /> drainageways, and when feasible the dischar�e from storm sewers will be
<br /> routed throu�h wetlands before dischar ing u��u �^*.�o�*� into the lake.
<br /> Storm sewer systems will not be considered for new developments or
<br /> where satisfactory natural drainage systems already exist. Where storm
<br /> sewers are needed, all efforts shall be taken to minimize their impacts on
<br /> receiving waters.
<br /> 6. The wetlands and marshlands of the city will be protected and
<br /> preserved as wildlife habitats, as unique open spaces, and as the only
<br /> economically practical method of flood protection and storm water
<br /> runoff filtration. :'�:� u� C*„a< *�,o �n4 �x�„+ n �•� ,�,r +
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<br /> �'�u��,���z=����*��. The water quality studies of the 1970s recommended
<br /> preservation and utilization of wetlands as the key element of an
<br /> inte�;rated, permanent surface water quality mana ement pro�ram for
<br /> Lake Minnetonka. Orono's earlv positive response to those
<br /> recommendations has been bolstered bv regional state and federal
<br /> pro�rams and laws that have since established wetland preservation (and
<br /> protection) as a hieh re u�lator� riarity. Orono's recentl�pdated
<br /> wetland protection ordinances in concert with the additional regulatory
<br /> authoritv of the MCWD, the MnDNR MnBWSR and the Corps of
<br /> En�ineers will continue to provide an aggressive program to retain and
<br /> enhance the viabilitv of the City's wetlands.
<br /> City of Orono Community Management Plan 2008-2030 Page 3A-45
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