06-13-2016 Council Packet - Laserfiche WebLink

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18 use by the Watermark residents. The outlots are for stormwater ponds, wetlands areas, parks, open space and trail corridors. A block section along Street C exceeds 1,500 feet. This length shall be reduced by eliminating the “ghost plat” cul de sac and extending the road to the north. The Street D block from Street C to 20th Avenue shall be re-evaluated and possibly reconfigured. The lots abutting 20th Avenue need to meet 40 setback and number of driveways accessing Street D should be minimized. Streets and Alleys CSAH 54/20th Avenue N is an “A” Minor Arterial-Reliever and Streets A, O& C provide a north-south corridor between I-35E and CSAH 54 as identified in the Transportation Plan. Streets A, B and D are consistent with the access spacing proposed in the I-35E Alternative Urban Areawide Review (AUAR) and Anoka County Highway Department Access Spacing Guidelines. Street A aligns with 73rd Street; Street B avoids wetlands and provides opportunity for development to the west of CSAH 54 and Street D aligns with Rehbein Street. The local roads have 60 foot right of way widths and 28 foot wide (cul de sacs) and 32 foot wide paved road surface. Temporary cul de sacs shall be required at the end of future street connections. Sidewalks are incorporated throughout the development. The preliminary plat indicates 60 feet of right-of-way from CSAH 54 centerline as required. Several cul de sacs (Street F, K, L, P and Q) exceed 500 feet in length. These cul de sacs shall have fire hydrants located every 300 feet and roadway width shall be 32 feet back to back. It is suggested that Street P and Q be redesigned to create one loop vs. 2 cul de sacs. A trail connection shall be made off the cul de sac of Street L potentially through Lots 650-651 through the storm pond outlot to Street B. Easements Standard drainage and utility easements at least 10 feet wide are provided along all lot lines. Drainage and utility easements shall also be dedicated 10 feet above the high water level over stormwater drainage ponds. Drainage and utility easements are also shown as being dedicated over stormwater management outlots. Conservation easements shall be dedicated over wetlands and greenway corridors. A 66’ wide private pipe line easement extends across the northeast corner of the site. Storm Water Management and Erosion and Sediment Control The site currently drains to ACD 55 on the south, ACD 72 on the north and overland to the west (existing culvert under county road). The site faces challenges for effective