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ZONING REGULATIONS § 7S-13SS local soil aiicl water consei-vation districts Sec. 78-1287. Stormwater management. and the United States Soil Conservation The following general and specific standards Service. shall aPply in adclition to those standards found (6) Fill or excavated material inust not be in article VIII of tlzis chlpter and section 82-222: � placed in a manner that creates an unsta- (1) When Possible, existing natural ble slope. drainageways,wetlands and vegetated soil (71 Plans to place fill or e�cavated materi�l surfaces niust be used to convey, store, filter and retain stormwater runoff before on steep slopes must be revie�vecl by the discharge to public waters. city engineer for continueci slope stability and must not create finishecl slopes of 30 ��> A clevelopment niust be planxzed and con- � percent or greater. ducted in a manner that will minimize the estent of disturbed areas,runoff velocities (S) Fill or excavated material must iiot be and erosion potential, 1nd reduce and placed in bluff impact zones. delay runoff volumes. DistLirbeci ,l��eas (9) Any alterations belo�v the orclinary high lnust be stabilized and protected as sooi� as possible aiid facilities or metlzods usecl water level of public waters must first be to retain secliment on the site. authorized by Lhe commissioner of the clepartment of natural resource� under �3) When development density, topographic Minn. Stat. � 103G.245. features, and soil and vegetatioiz coiidi- tions are not sufficient to adequately han- (10) A.lterations of topography must only be dle stormwater runoff using natural fea- allowed if they are accessory to pex•mitted tures and vegetation, various types of or conditional uses and do not adversely constructed facilities, such as diversions, affecb adjacent oi� nearL-y proper�ty. seLtling basins, skimming devices, ciikes, (11) Placement of natur�l rocic ri ra includ- �vaterways and ponds may be used. Pref- P P� erence must be given to designs using ing associatPd o adiug of the shoreline surface drainage,vegetation,and infiltra- and placement of a filter blanket, is per- tion rather than buried pipes and maiunade mitted if the finished slope does not ex- illaterials and facilities. ceed three feet horizontal to one foot ver- tical, the landward extent of the riprap is �`�� 1en constructed f'�cilities az•e used to �aithin ten feet of tlie ordinary high water perform tivatcr manlgement, documenta- level, �nd the height of the ripraP abo�e tion must be provided by a registered � • , professional civil engiiieer that they are the ordinary high�water level does not designed and installed consistent tivith exceed three feet.A riprap pernzit slzall be ,.. , , tlie f eld office ±echnical guide cf the lcc�zl oul.ainea per tne requirements oi seciion �S_��J so�l and water consei��ation disti•ict. l;�1 New constructed stormtivater outf�lls to (ff Escavations where tlie intended purpo�e is public rva't.ers iuust provide for filtei•ing oi• counection to a public �vater, such as boat s1iPs� settliiig of suspended solids and slcim- canals,l�goons and li�rboi•s, are prohibit?d above ming of sui•face clebris befoi•e clisch�c•be, the OI'C11113I'y high water level, Such excavatians (Orcl. No. 101 2nd sei•ies, � 1(.10.�G(1G)eI�)�, 2-24- helo�ti� the elevation or the ordin:�i•r liigh �vater l�g�� 1��el are subject to ai�proval of ihe clepartme!it oF ii�tui•al resources�ncl other ag�enciea tivith concui•- ��c. r8-1288. T�arsl cover limitations. rent jui•isdiction. (a) No h�rcl cover or iinpervious surf�lce ah��1_1 i0rd. No. 101 `,3nd series, ti 1i.10.5G(16)�Ji), 2-`?�- he pl:�ced, located or constructed�vithi�i i� feet of 19J'3;Ord. No. 127 2nd serieS, \S. 'I-IL-1�)�-�; Ol'Ci. Lilc arciinzry hi;h �vater level oF aiit• la'�e vr �'o. 1G3 `�nd series, � 3, 12-S-1997; Ord. �o. 171 �ributar�. e�cept fer stair�=:ay�s, lifts, landin,'s a��ti 2nd series, � ?, 4-��-1995� lockno�es a: T'2�Lllated elsewl1�12 111 t111S C'ode. �•;i:�; . ... i CD��:1Ja