Agenda - Council - 07/26/2005 - Laserfiche WebLink

Home

l,Tnal ]'lat and .Final Site Plan Review: Ramsey Town Center 8th _/lddition 22, 2005 ?~g'e 3 orb Staff is also requiring an additional south bound left mm lane from Town Center Drive on to Bunker Lake Blvd. This exceeds the requirements of the AUAR; however Town Center Drive will be an MSA link to the northern part of the city and the turn lane will facilitate the fi~turc traffic. The improvements at the proposed intersection of Zeolite Street and Bunker Lake Blvd m'ust be approved by the Anoka County Highway Department. Grading and Drainage: Staff has received a grading and drainage plan for the development. and has prepared a memo regarding the necessary changes. The major items are listed here. S tormwater calculations have been submitted to the city and Lower Rum River Water Ma~mgement Organization. The proposed grading on the lots does not conform to the.city or LRRWMO requirements for separation between the lowest floor and the 100 yr storm elevation. Revisions will be required. The 100-year high water elevation of all detention areas must be shown and the lowest openings in the adjacent houses must be 2 feet above the emergency overflow for the detention area. The proposed ponding areas in the back yards must be protected by drainage and utility easements. 100-year elevations are also needed for areas of the backyard that will be within drainage and utility easements. A Stormwater Pollution Prevention Program (SWPPP) is required for this project. It must reference the SWPPP prepared for the Ramsey Town Center Project and provide for transfer of responsibility fi'om RTC, LLC to this developer and contractor. Grading north of Bunker Lake Blvd. on Outlot A exceeds the 4:1 maximum slope permitted. Any change of grades to the roadway or plat as a result of the sledding hill that is to be constructed in North Park will be the Developer's responsibility. Grading plans for the park must be re-subinitted prior to final plat approval. Lots 1-5 and 18-22 are partly or wholly within a drainage and utility easement platted over a proposed stormwater pond. The volume and function of the pond must be provided elsewhere on site prior to release of the drainage and utility easement. Calculations supporting this change have been submitted. They show increasing the storage in the West Ramscy Parkway pond. Staffis reqUesting a sketch showing the proposed changes to the ponding area prior to approving this modification. Additionally, these easements will need to be vacated prior to recording of the final plat. Stormwater Analysis: The latest SWMM model shows an increase of 3.0 acre feet in the West Park pond. The pipe from the 8th, 9th, and l0th Additions is upsized to pass the 100-year event fi'om these projects to the West Park pond. The change in pond level is approximately 0.1 feet. Staff is requesting a sketch showing the proposed changes to the ponding area prior to approving this modification. Utilities: This subdivision will be served by sanitary sewer and city water services that will be extended into the development. The following sheet specific comments must be addressed: