Agenda - Planning Commission - 10/06/2016

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Review File:Brookfield 8th Addition Preliminary Plat Exhibits Engineering Review September 16, 2016 Page 2 of 4 8. This project will require a stormwater permit from the Lower Rum River Watershed Management Organization (LRRWMO). The project is not impacting wetlands so a wetland modification permit will not be required. The project will require approval of the wetland delineation by the LRRWMO Technical Evaluation Panel and ratification by the Board of Directors. 9. The LRRWMO requirements are presented at the end of this memo. Sheet Specific Comments: Existing Conditions 1. A brief description of the soil types represented on the map must be added in table form. Preliminary Plat 1. The back drainage and utility easements must be adjusted to be above the FEMA 100 year elevation on all lots. 2. Lots 3 & 4, Block 1 and Lots 7, 8, 9, 10, 11 +and 16 do not meet the requirement for 100 ft from front property line outside of drainage and utility easements. Grading Drainage and Erosion Control Plan 1. As noted above, the FEMA 100 year flood plain elevations must be updated. 2. The typical lot information and the elevations on each house pad must be revised as follows: • The elevation at the front of the pad is the actual garage floor elevation. • The Elevation of the back of the pad is the floor elevation. 3. Turn off the tree symbols and elevations on this sheet. 4. All floor elevations must be revised to be at least 3 feet above the highest anticipated ground water table, 2 feet above the designated or designed 100-year flood elevation or 1 foot above the nearest emergency overflow, whichever is higher. 5. The Lot Elevation Table must be revised. 6. Positive drainage must be provided across Lot 1, Block 1 from the existing lift station. C 1.1 1. Check clearance between water services under storm sewer and specify insulation if needed. 2. Provide sewer and water service stubs to Lots 9 and 10, Block 1, and to Lot 1, Block 2. 3. A pedestrian curb ramp must be added at the trail entrance in Block 2. 4. Connect 8"watermain to watermain under 166th Avenue. 5. Connect 168th Circle to 166th Avenue. 6. Add note: The City of Ramsey will operate all valves after they are connected to the system. Water may not be drawn from hydrants. Water for dust control is available at City owned water fill stations located at 167th and Quicksilver or 14100 Jaspar Street.