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Ms. Katie Larsen <br />June 6, 2018 <br />Page 2 <br /> <br /> <br /> S:\Community Development\Projects\Planning Cases\Nature's Refuge\Staff Reports\20180611 CC (RZ & PUD PP)\20180611 v2 (revised 20180608)\a2 2018060 <br />1. Street C shall be extended to the north side of Anoka County Ditch (ACD) 10-22-32. <br />This includes the extension of sanitary sewer and watermain and culvert crossing <br />reconstruction/extension. The road bed shall be graded and restored for future extension <br />and paving. Street C extended to the north extents of the property. <br />2. Sheet 13 (Preliminary Site and Utility Plan) shows an Outlot C in the same locations as <br />previously identified Outlot B. Outlot lettering updated <br />3. Each plan sheet should include an accurate legend. Legend updated. <br />4. This project is assumed to be phased with Blocks 3, 4, & 5 being constructed as <br />Phase 2. <br />5. Standard Detail Plates from the City of Lino Lakes General Specifications and <br />Standard Detail Plates dated February 2018 should be used in the “Details” section <br />of the plans. Contact Ed Youngquist at the City of Lino Lakes for PDF versions. <br /> <br /> Grading, Erosion and Sediment Control <br /> <br />The Nature’s Refuge development proposes the mass grading of 62 new single-family lots. <br />It includes the extension of streets and utilities northerly from Main Street (CSAH 14). A <br />project SWPPP was submitted and reviewed. <br /> <br />Comments: <br /> <br />1. The applicant shall submit the earthwork volume data for excavation and embankment. <br />Earthwork balance is attached. <br />2. The applicant shall ensure that the proposed grading is not in conflict with the existing <br />elevation south of Street B at the edge of the site. <br />FES added to catch runoff in the created low area. <br />3. Label pre-drainage and post-drainage directional flow arrows. <br />This is shown on the drainage figures in the SWMP. <br />Drainage arrows need to be shown. <br />4. Show locations for stockpiles and BMP measures for stockpile management. <br />Stockpile locations will be determined by the grading contractor. BMP <br />measures are detailed in the SWPPP. <br />5. The applicant shall show a screening berm along Main Street (CSAH 14) and grades to <br />accommodate a trail, see comments in the transportation section. <br />A berm is not possible with the drainage swale in the Outlot D. A 15’ landscape <br />easement has been added along B4 L15-17 and a screening fence along B7 L1. <br /> <br /> Stormwater Management <br /> <br />The existing site is undeveloped and has Anoka County Ditch (ACD) 10-22-32 flowing <br />through the site from east to west. The site also contains several wetlands. The Nature’s <br />Refuge development proposes a storm sewer and ponding system. The system shall meet the <br />City’s and Rice Creek Watershed District’s (RCWD) Stormwater Management <br />requirements. The total proposed impervious surface is 7.8 acres. They are proposing that <br />the impervious areas be managed through storm water ponds, infiltration basins and <br />wetlands and discharging to ACD 10-22-32.