08-03-2020 Council work Session Packet

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Stockpile locations will be determined by the grading contractor. BMP measures are detailed in the SWPPP. 5.The applicant shall show a screening berm along Main Street (CSAH 14) and grades to accommodate a trail, see comments in the transportation section. A berm is not possible with the drainage swale in the Outlot D. A 15’ landscape easement has been added along B4 L15-17 and a screening fence along B7 L1. 6. The applicant shall add redundant perimeter control measures spaced 5’ apart where a 50’ buffer cannot be maintained from wetland or surface water areas. Areas include the eastern portions near Sta 3+00, Sta 6+50, Sta 7+50, Sta 12+00. Redundant perimeter silt fence added along entire length of wetland east of blocks 5 and 6 and east of Street C. 7. The applicant shall review drainage being directed onto adjacent private property: • Water from Street B and A is directed to east and may require an easement from the landowner to drain to the proposed FES. Grading has been revised. Sidewalk revised to 8 feet and placed against curb to allow for additional grading to the east. • West side of L2B8? Grading has been revised on the west side of L2B8. A FES has been added and swale elevations added. Better define/pull back, into the yard from both the north and south, the swale on the west side of L2B8. Slope steepened along the driveway to 3:1 to provide a better swale. Easements revised accordingly. 8. Better define the grading for the future trail along Main St. and edit not to say “Grade 10’ trail for future construction”. Note sheet 4 of the sanitary profile does not show the trail cut in please edit. Future grading shaded back in the exception piece and a note added. Trail to slope into Main Street where there is curb and slope away where there is none. This may change when the county decides to expand the street in the future. Note that correspondence we have received from the county, the road will be expanded, but no date has been determined yet. Also per conversation with the county, see updated turn lane layout and slopes from edge of bit to infiltration basin. • Stormw ater Management The existing site is undeveloped and has Anoka County Ditch (ACD) 10-22-32 flowing through the site from east to west. The site also contains several wetlands. The Nature’s Refuge development proposes a storm sewer and ponding system. The system shall meet the City’s and Rice Creek Watershed District’s (RCWD) Stormwater Management requirements. The total proposed impervious surface is 7.8 acres. They are proposing that the impervious areas be managed through storm water ponds, infiltration basins and wetlands and discharging to ACD 10-22-32. Basin NWL HWL