01-25-2017 ADDITIONS Packet - Laserfiche WebLink

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2 of 3 10062 Flanders Court NE – Blaine, MN 55449 – Ph: (763) 780-0450 Fax (763) 780-0452 walls in the future. Ongoing maintenance should be covered by the association documents or covenants. 4. The Emergency Overflow route for the pond was added to the plan, but 1 foot of free board must be provided between the pond high water level and the emergency overflow elevation. Utility Plan 1. The applicant will need to provide a copy of the Ramsey County permits for connection of utilities and access on the County right-of-way. 2. Tracer wire is required on all sanitary sewer lines and any water line that is not ductile iron or copper. 3. The connection to the existing sanitary sewer line must be with an integral base with waterproof boot connections for all pipes. 4. The elevations listed for storm structure inverts and the pipe lengths and grades do not match for runs from CB4 to FES2 and FES1 to STMH2. 5. The storm pond outlet pipe conflicts vertically with the storm line crossing between CBMH3 and CB2. 6. The profile view provided should match the elevation information listed in the tables on sheet 7. 7. It is unclear if the applicant is requesting the City accept the sanitary sewer, watermain, and storm sewer as public improvements to be maintained by the City in the future. Because the street is proposed as private we would recommend the storm sewer system remain private as well. If the applicant would like to turn the watermain and sanitary sewer improvements over to the City for future maintenance this should be discussed before accepting the plans. Landscaping 1. The City may want to review requiring landscaping along the north side of the retaining wall on the north end of the property 2. The area between the patios of the north buildings and the centerline of the retaining wall is noted at 4 feet wide. The landscaping plan indicates arborvitae around the patio and Blue Spruce pine trees in these areas. It is our opinion that there is not sufficient room for Blue Spruce to be planted between the wall and patio areas. Drainage Calculations 1. It appears that the proposed pond will be used to meet the required infiltration volume. Soil borings should be provided with an estimated infiltration rate to verify that the pond will function adequately as an infiltration basin. There is currently a note on the plans that lists the water elevation of the pond at 941.0. It should be clarified if this is the 100-year high water elevation or if in fact the pond is to function as a wet pond and this elevation is the normal water level. If the pond functions as an infiltration basin additional notes 3