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May 6, 2024 <br />City of Lake Elmo <br />Page 2 of 8 <br />Reference: Bridgewater Village Planning Commission, Engineering, Fire, Landscape Architecture, and <br />Washington County comments received from The City of Lake Elmo <br /> <br /> <br />Manual requirement between typical 4% and maximum 25% slope. Certain areas of the <br />project, notably around the proposed infiltration basin and wet pond, show proposed slope <br />in the easement up to 25%. The City Standard allows up to a maximum of 25%, however in <br />the City comments received through the Plat approval process, City Engineering noted that <br />grades above 4% are only allowed upon approval of City Engineer. The project requests <br />grades to be allowed up to 25% maximum where needed but will achieve 4% where <br />feasible. Being held to 4% grading in these areas has significant impact to the property line <br />location of Outlot C, commercial lot 2, and Outlot B. If required to meet 4%, the Outlot sizes <br />will need to increase and will impact the developable area of the adjacent lots and require <br />preliminary plat amendment. <br /> <br />3. Stillwater Way Trail Section <br /> <br />a. Comments received during the Preliminary Plat submittal from 10/24/23 requires trail along <br />the south side of Stillwater way N. <br /> <br />b. Bridgewater Village Final Plat-plan Review engineering document received 04/10/2024, Item <br />16, requires a trail section that would infill the existing drainage ditch within the proposed <br />ROW. <br /> <br />c. Request for deviation from City Request: <br /> <br />Project currently is proposing a trail section and grading design that would maintain to the <br />extent practical the existing drainage condition and keep the existing ditch within City ROW. <br />If the section requested by engineering comment is required, it would fill in the existing <br />ditch and significantly change the existing drainage condition, potentially requiring <br />additional ROW and impacting the Land Use acreage. The proposed section design seeks to <br />maintain the existing drainage condition of using curb cuts along the turn lane (similar to the <br />existing curb cuts on the roadway today) and proposes to utilize drainage grates along the <br />trail to direct stormwater runoff under the trail. An alternative approach would be to add <br />substantial public storm sewer within the turn lane with additional cost burden on the <br />development. <br />The project design varies from this requirement by providing a trail section that sits a <br />consistent 2' below Stillwater Way N to avoid impacts to the existing ditch. Hydraulic <br />modeling was performed on the ditch to ensure the design could manage stormwater runoff <br />without overtopping the adjacent trail a HydroCAD model has been included for reference. <br />Additional exhibits and design information will be provided at future submittals. The