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Ptanning Case No. 477-97 D.Vd. Jones PUD Projec� March 19, 1997 Page 5 study was not completed at the tune this repo�ri was writYen. This infoamaiion should be �vailable prior to the Apri12, I997 Planning Commissian meeting. Drainage 1'lar�: From the con�ours on the site plan da.ted 3/14/97, the current drainage and vvater run-offflows primarily into the wetland with lesser amounts flowin� into the Highway 10 ditch. Two N�URP ponds are proposed on �he site alihough no caIculations have been provided to detemune the e�pecied drainage volur�e nor capacity of the ponds. 5taff° has requested a more detaiied drainage ari$.IySiS �TOri7 til� ��]1Cc�11t, in order to refer it to the Ciry Engineer. Nafural Fecataares ana' Open Spr�ce: This proposed development would replace whai is now vacant Iand with comtnercial and residential uses, preserving ihe wettand fhai is present on this site. The r�aetland itself will nat be aliered in any way as a result aithis project. Nluch of ihe site is cavered °ui prairie-t�pe grasses and scrub trees, although there are a number of significant trees as well. The dev�lop�r has incorporaYed many of the significantc trees into the design and landscaping of the project. �taffhas suggested installation of a walkin� path around the weiland in addition ta the observation boardwall�/nature overlook shown on the site plan e�rtending into the wetland. Any work within the wetland would require permission from both �linnesota DNR and Rice Creek Wa�ershed District. No construction is anticipated to occur vaithin the wetlarid, although there has been disc�assion about cleam-up worlc in order io erthance the wetland. Park Dedicataon Requirements: T'he applicant will need to provide a park dedicaiion payment in an amount ta be established prior io City Council �pproval of this PUD. Park dedication fees are based upon the fee schedule pravided in 3ection 1204.02, Subd 4 of the Subdivision Code. The fee �or the residentia.l component is 10 percent of the land value given the ratio of 10.3 residential uniis per acre, i�ss the wetiand acreage. The wetlar�d covers an area or approximately 4.5 acres. The fee for the commeccial and office uses ar� also based upon 10 perceni of the land value. The Pa�ks and Recreation Commission will deternvne the exact dollar amount of the park dedication fee. Provision for Common Qpen Space: The site plan does not indicate any provision for common open space. The Zaning Code in Section 1120.04, Subd. 3f pertaining to Planned Unit developments, estabiishes criteria for PLTD approvai, ane af which is that a sufficient amount of "usable" open space is provided. Section 1 I20.02, Subd. 3, General Requ�rements and �tandards, requires that enough common open space to meet the minimurn requiretr�ents of ihe Chapter is provided. However interprefiatiot� oi Section 1120.Q2, Subd. 5, pertaining �o the stap,ing of open spac�, would indicate that peovision of common open space is at besi optional. Yt states, "When a PUD provides for cor�t�rton open space ..." Nowhere in Chapier 1120 af the City Code is tliere a defined requirement for common open space. Sta#� recogruzes thai the Code is clear in that a sufficient amotant ofusable open space should be provided with 1'ilDs but seeks the Planning Commission's input as to haw much should be _ provided.