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Riverstone SouthEAWDraft December 2020 <br />chance flood),ranges from 855feetat the upstream end of the site to 853 feet at the downstream end <br />of the site. The lowest elevation onsite (at the southeastcorner of the site) is 858 feet. The site is <br />outside the floodplain because the lowest part of the site is 5 feet higher than the corresponding flood <br />elevation.The project will avoid floodplain impacts and comply with Lower Rum River Watershed <br />Management Organization (LRRWMO) Stormwater Standards that require lowest floor elevations to <br />be at least 3 feet above the highest anticipated groundwater table and 2 feet above the 100-year flood <br />elevation, or 1 foot above the emergency overflow, whichever is greater. <br />Shorelands <br />Thesite is outside the shoreland overlay district of the Mississippi River(Figure 5). The shoreland <br />overlay district extends 300 feet from the edge of the bank of the river channel, or to the landward <br />extent of the floodplain, whichever is greater.The site is setback about 666 feet from the Mississippi <br />Riverand is located entirely outside the floodplain, so the shoreland overlay district does not affect <br />the proposed project. <br />Mississippi River Corridor Critical Area (MRCCA) <br />About42% of the site (33.30 acres)falls in the Mississippi River Corridor Critical Area(MRCCA) <br />(Figure 4)and the Mississippi National River andRecreation Area (MNRRA). The MRCCA is <br />administered by the City of Ramsey, with oversight by the Minnesota DNR, and sets standards for <br />land development. The MNRRA is overseen by the National Park Serviceand does not regulate <br />development on private lands.Land use in the MRCCA is regulated under three documents: <br />1.Section 117-144 to 117-148 (Environmental Protection Overlay Districts) of the City of <br />Ramsey City Code; <br />2.Chapter6Mississippi RiverCorridor Critical Area Plan, of the City of Ramsey 2040 <br />Comprehensive Plan; and <br />3.Minnesota Rules Chapter 6106 (Mississippi River Corridor Critical Area). <br />Minnesota Rules Part 6106and the City of Ramsey Comprehensive Plan designate the MRCCA <br />within the project area as CA-SR (Critical Area, Separated from River).Land in this district is not <br />readily visible from the riverand therefore thedistrict provides flexibility in managing development. <br />Maximum structure height is 35 feet. Lot area and width standards must comply with requirements <br />of the underlying zoningdistrict.Primaryconservation areas must be set aside as open areas, and the <br />required set-aside is 10% of the parcel if the parcel includes native plant communities. <br />The proposed Site Plan (Figure 3) will preserve woodland open space over 10% of the project area <br />andabout 24% of the MRCCA area within the site (roughly 8 acres). In addition, the project design <br />transitionsfrom larger lots near in the southwestern part of the site within the MRCCA and near <br />existing residential lots, to smaller lots in the northeastern part of the site near the existing solar farm <br />and future commercial developmentarea.The MRCCA area includes additional open space <br />allocated to stormwater management and a grassed public safety connection to Bowers Drive. <br />7 <br /> <br />