12/11/2013 P&Z Packet - Laserfiche WebLink

Home Search

11 • Ms. Katie Larsen December 4, 2013 Page 2 4. Maintenance of the center median at CSAH 54 and Street A will be required from the neighborhood. Documentation confirming Homeowners Association maintenance of this median will be required. 5. The City's Comprehensive Plan shows a trail going through the site from Birch to the north. The plans should extend trail to the west along Streets E and B. 6. The proposed street stubs to the south property line for both Street B and Street E appear to be directed into wetlands. Additional information must be submitted regarding these alignments. Sanitary Sewer and Watermain Comments: 1. The City's Sanitary Sewer Plan shows drainage areas 3D and 3G leading to the area thus a stub needs to be extended in Street A at CSAH 54. The areas require potential lift stations and these stubs need to be as deep as possible. The new sanitary sewer main from the connection to the Met Council main in Cedar Street south and west to the stub on Street A at CSAH 54 will need to be 10- inches in diameter and installed at minimum grade. 2. Per the Street comment of realigning the connection to Cedar Street to match the existing easement on the north side of Cedar Street, the sanitary sewer will also need to be realigned. This may allow for a connection to the existing manhole in this location rather than constructing a new manhole over the existing Met Council main. 3. Additional analysis will be needed to confirm the necessity of the lift station. If necessary, we will need to determine what the ultimate service area is for it so that it can be sized accordingly. 4. All watermain shall be DIP Class 52. 5. Include the proposed drainage and utility easements on the utility plans so that we can confirm all of the utilities are contained within the necessary easements. Storm Sewer and Drainage Comments: Prior to plat approval, the following items must be addressed: 1. Low floors must be 4' above the highest anticipated water table which is identified as mottled soils or the seasonally high water mark. Please design accordingly. 2. The applicant must quantify the water quality benefits provided by the proposed ponds (based on Rice Creek Watershed District Rules) and include this information in the stormwater management plan for the development. 3. Calculations for the water reuse system must be provided for review and approval. In general, calculations must consider irrigation demand, reservoir capacity, and stormwater runoff supply and must address how these components are interrelated to provide volume control consistent with RCWD Rules. 4. Calculations for the 10 -day, 100 -year snowmelt event must be provided that demonstrate no increase in peak discharge rates from the existing conditions. Prior to construction, the following items must be addressed: 5. Responsibilities for maintaining stormwater management facilities must be formally documented in an agreement and provided to the City prior to construction. S- Commmuty Developmenl\Projects\Planning Cases \NorthPointe - Emmerich Dcvelopment\EngineeringNemo 'damn n - Nonhpoint - 1204I3.doc