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Ms. Anne Norris CITY OF RAMSEY Page -2- w Many lots are affected by the flood plain restrictions of the City's Ordinance. The entire 100-year flood plan has been designated floodway, which is the area to be left as open space to allow for passage of the lO0-year flood. Therefore, no principal structures (i.e. houses) can be built in the flood plain area unless the City's official controls are amended and such an amendment may not be possible. It appears that some plat modifications are needed to address this issue. The plat should indicate Regulatory Flood Protection Elevations (RFPE) for each lot. I have written these elevations on the plat - see enclosed. The RFPE is the minimum elevation to which the lowest floor (including basement) must be elevated. 7. The plat fails to state other setbacks from the Scenic River Ordinance as follows: Bluff-Building setback - 30 feet; Sewage system from River - I00 feet; Controlled Vegetative cutting area - 150 feet from River and 30 feet from the Bluff. These standards should also be added. The proposed stormwater swale from the 154th Lane NW cul-de-sac which outlets to the Rum River requires a DNR permit. The bank soils are extremely instable and grading as proposed will likely result in erosion problems. The swale should end with a pipe discharge to the river and erosion control at the pipe inlet and outlet. I have returned the plat with my comments written on it. Please enter these comments into the record of the hearing. Also, please provide a separate copy of the preliminary plat for my records. I urge revision of this plat as recommended earlier. Please advise me of the City's decision. Jo[ Linc Sttne Arc Hydrologist Me!ro Region Division of Waters enclosure cc: Ann Canis Tom Skiba Peter Raat£kka, Hakanson, Anderson & Associate8 DeWayne Olson Consulting Engineerm N.C. Hoium & Associate8 L76