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Review File: Harvest Estates <br />Preliminary Plat Request <br />Engineering Review <br />Page 2 of 5 <br />The proposed new development studied was estimated to consist of 50 single family residential units <br />and a 1000 student middle School by 2026. Based on the traffic analysis conducted the <br />recommendations and conclusions are: Original recommendations 2015 Comments <br /> <br />1.Stop signs shall be placed at all development entrances that intersect with the Current Roadway Network. <br />No new connections to the existing roadway network are proposed. <br />2.The intersection of Sunwood Drive and CSAH 5 will need to be reconstructed with full turn lanes on <br />CSAH 5. CSAH 5 is a county highway. The plat has been submitted to Anoka County for <br />comment. <br />3.The analysis recommended addition of lanes to TH47 and CSAH 5 by 2026. Changing the proposed <br />use from a school to single family residential units will significantly reduce the traffic impact <br />from this parcel TH47 and CSAH 5 have regional significance and decisions on upgrades <br />should be made by MNDOT and Anoka County, respectively. <br /> <br />Grading and Drainage Plans: A preliminary grading and drainage plan has been prepared for this <br />subdivision by Hedlund Engineering Services. Staff offers the following comments on this plan: <br />1.Lot corner elevations need to be provided on all lot corners and along the centerline of <br />drainage swales which do not coincide with common property lines. The 100 year high water <br />elevations for ponding areas and the FEMA 100 year flood elevations are shown on the plan. <br />All lowest floor building elevations must be two feet above the highest elevation noted. <br />2.The emergency overflow elevation for each water quality pond must be one foot lower than <br />the lowest adjacent grade of the building structures. <br />3.The maximum slope should not exceed one foot vertical to four feet horizontal. . <br /> <br />A permit from the Lower Rum River Water Management Organization (LRRWMO) will be <br />required. <br /> <br />Submit a copy of the MPCA Construction Stormwater Permit to the City prior to construction. <br />Submit copies of erosion inspection results to the City prior to release of escrow. <br /> <br />Utilities: All lots are proposed to be served by municipal sewer and water. Construction plans and <br />specifications are subject to review of the City Engineering Department. <br /> <br />Stormwater Pollution Prevention Plan: Hydraulic Grade calculations must be submitted for the <br />storm sewer system. A copy of the stormwater calculations provided to the LRRWMO for plan <br />approval must be submitted to the City. The calculations submitted are missing CB 119-121 which <br />are shown on the plans. The CB drainage map is missing labels. <br /> <br />Staff offers the following general comments on all sheets: <br />Add dedicated sheet for removal and replacement of Existing Sewer and Water lines. <br />Separate Sewer and Water from Storm Sewer and Street sheet for this submittal. <br /> <br />Staff offers the following sheet specific comments: <br /> <br /> <br />