2004-019 Council Resolution - Laserfiche WebLink

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areas into the design of themanyparking :lot vegetated islands on the This unclear ;Gorr the document Fthis losv impact ; developmentpractieeis currently—part of the ,proposal. *.constructing depressed, rather than raised islands" and surrounding the . islands-With curb cuts or; concrete edges 004 3100e to the interior of the islands, runoff from theparking areas can be routediinto these vegetated; areas, then through a piped overflow iota the-underground chambers: In this fashion the first flush ofrunoffevents can be retained intthebio- nftlt ation weak maxirnizingtheefficiency the test of the runofftreatment trein. Item 10 -;band Cover and ftem 25- .RearbyResource The=profposal" includes ahigh<percentage;orimpervious surfaces thatwilt cover 30 acres if the projectis implemented as proposed. To preserve water quality in the adjacent regional. park stormwaterrunofifrom the development wiltneed to be:.managedin an ecologically sensitive manner.., Portions. of the site are identifiedas regionall +importantit the joint' Metropolitan Council andMinnesotaDepartment of islituralResourcesRegionalNaturalResources Inventory and Assessment The EAW should acknowledge this designation. Areas of particular concem include:" • •proposed re iucttoris in wooded/.forested land cover the regional park; • potential"loss of theisland of oakwoodsin the•southwest/central "part of the site;1 use:ofnative vegetation in the proposed vrban/suburban,Iandacaping where- there are'developtnent,transit ons tortheregionalpark's:natural areas. Item 19 -- Gcolagic Jlazards awffog "Condilioas This.item states that "excessively drained soils and- - relatively high: ground water table creates: a potential for ground water contamination•" The sanitary waste issue is addressed';: through; the municipal sanitary' treatment, off site. It is,recoimmend that this information also be considered when 'm information ,Deepstormwater ponds woulrfhavethe potential to directly contaniinale groundwaterwithoils, -road salt, and either contaminates associated with roads and "parking lots. ftem 2i —,Tra c The EAW statesthatyear 2020 -traf lc.volr mes for fullbuiild -out of the site will be part of a AitilidatiOngiograitithattsheing developed. It further statesthat results •ofthetratf c: simulation as it relates : to' the -regional transportation system will be shared and discussed with Mi>l nesota:.Department of Transportation'(Mn`I?OT) ,and.the Anoka County iighway department The results of tho traffic. simulation model should also be shared and discussed with' the IvIetropolitanCouncil. There is currently. ='no transit service to the, proposed; development. Rowever,Routes250 end262.do operate in the area,. and.Rou'tte 250 travels past the site s n,Lake Dnve on its "dead cad" routing to and riot St. I`oseph's Church Park & Ride. lot. Metro Transit an`d Metro Transit Services.can consider rerouting one or both.ofthese routes•to offer residents service to.;both downtown Minneapolis anddowntown St Paul. In RESPONSE 2 The majority of the interior parking lot islands do not have sufficient area to treat and store the amount of runoff that will be generated from the proposed development, but these islands will consist of a pervious surface that will provide some infiltration. Detention ponds and underground infiltration chambers will be utilized to treat and store runoff from the site. Where applicable, a drop curb design will be used to provide access to infiltration ponds. Currently, the site plan includes four onsite ponds that will receive runoff from impervious areas through a drop curb design. At the time the EAW was written, the City was not aware of the Regional Natural Resources Inventory and Assessment (NRI /A) and that the MNDNR and Metropolitan Council had identified a portion of the site in the assessment. The Metropolitan Council was contacted, and a copy of the NRI /A map was attained. Preservation efforts have been incorporated into the site plan that will reduce impacts on a grove of mature trees located on the eastern side of the site (adjacent to the park). Furthermore, the proposed development includes natural open space areas and vegetative buffers between the development and the park boundary. Suitable separation (3 to 4 feet) will be maintained between the bottom of detention ponds /infiltration chambers and groundwater to minimize the potential for contamination.