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<br /> ".-. ~ .~~-_._-_.__... .......'---.-"---.-.... ~ .~-"-,;~ <br /> .- :f <br /> . A-8 1 <br /> ; I <br /> PUBLIC ~OR~S PROCEDURE i <br /> :' <br /> .c STOR.\I DR.~I~.-\GE CREDITS <br /> ;'larch 27) 1984 <br /> BACKGROU:-:D <br /> In January of 1984, the Roseville Council adopted a storm dr~inage utility, to get.h\ <br /> with city policy allol<ing for adjustr.:ents or credits to storm drainage fees. The <br /> following procedure shall be used to calculate these credits to assure consisL~nt <br /> application to all situ .1.tions. <br /> CREDITS <br /> A. ~~D USE INTENSITY CREDITS <br /> L Criteria: lfuen uniL runoff generated by a parcel differs from Lhe ass <br /> amount by more th3n-20%~ parcel drainage fee is to be adjusLed La refl. <br /> aCLual rwlO ff . <br /> 2. Required inform~tion by applicanL: <br /> .. <br /> a) Complete site plan. <br /> b) SiLe area and percentage of "improved" surface. <br /> 3. CalculaLe Procedure: <br /> , . a) Calculate uniL ~unoff by SCSS method; us ing aCLual percenL :mpro' <br /> surf:lce, 2" rainr:lll, Soil Group "B1I, Anticetien[ ,\loisture Condit: <br /> i.. <br /> .. b) Compare wi th "Standard" Uni L Runoff. <br /> ( Land Use "Standard" 2" Runoff <br /> Single family ~ 241. <br /> Cemeteries ~ golf courses .0911 <br /> ... Developed parks .18'1 <br /> Schoo I s ~ co~~unity centers ~ 30" <br /> " NulLiple ~ churches .56" <br /> i Commercial/industrial 1.2401 <br /> c) If calcul~ted uniL runoff differs from sLandard by 20% or ~ore, ; <br /> , JUSL parcels REU value by raLio of aCLual unit runoff to sianda: <br /> ! <br /> uni t runoff. .. <br /> L_ <br /> 4. ExcepLions: <br /> " a) No adjustQenLs LO single fa~ily p~rcels, <br /> as their fees do not de~ <br /> - on lot $lze Or intensit:y_ <br /> b) For parcels ~i[h dr3inage easc~cntSt reduce ;",rcel si:e to ~On-e: <br /> ncnt: arc:! t then calculaLe uniL runorf. <br /> t."' B. Rate of Dischar~e CrediLs <br /> r L Cri[cri3-~ l~len pe3k runo!f fro~ site is liClited to pre-developoent Ie' <br /> -' by on-:;ite f:1'cilities o"ncu .and ...aintained by property ol'ner. up to 25.... <br /> ..reduction in drainage 'fce can be !;ranted. <br /> --. 2. Required infor::::Jtion by applic;mt: <br /> a) Complete si plan. <br />