5.1. PCSR 07-27-2004 - Laserfiche WebLink

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Belmont Estates July 15,2004 Page 2 • The preliminary plat indicates Lots 1 and 2 of Block 1 will require a variance for the depth of the lot. Actually Lot 1 can be considered to have frontage on CSAH 12 and therefore, does not require a variance. Staff would recommend granting of the variance for Lot 2, Block 1. • Drainage and utility easements for the various ponding areas and utilities outside the rights-of-way are not shown on the preliminary plat. B. Grading and Drainage Plan • No drainage calculations were submitted. There is a proposed pond shown on the grading plan at the rear of Lots 6 and 7, Block 2, however, given the amount of area that drains to that pond, it appears the pond is relatively small. Also, city policy requires that ponding areas be located such that access can be achieved by maintenance personnel in the future from city rights-of-way. • It was difficult to review the grading plan because it does not show house pads on any of the lots nor the style of home or lowest floor elevations. Also, emergency overflows and other items such as spot elevations in rear yards are not shown on the grading plan at this time. • There is a significant grade break problem near the proposed ponding location on Lot 6. There is a 904 contour and then an 896 contour. • There is an existing drainage and utility easement shown in the southeast corner of the development, however,the plan indicates filling in this area. Is this drainage and utility easement for underground facilities or overland flow? • Because the project will disturb more than one acre of land, an NPDES construction permit will be required by the Minnesota Pollution Control Agency. As part of the permit, a Storm Water Pollution Prevention Plan (SWPPP) must be completed. This must be submitted for review and approval by the City of Elk River. The SWPPP should detail the anticipated pond maintenance schedule and public and private responsibilities related to this maintenance. Again,the pond location does not allow for access to perform these maintenance activities. Therefore,the pond design and locations will need to be reconfigured to allow for access from rights-of-way. C. Street and Utility • The street access to CSAH 12 will require a permit from Sherburne County. It is likely the permit,when issued,will require the construction of a right turn lane into the site. • No storm sewer calculations were submitted, so the layout of the storm sewer system cannot be reviewed at this time. • Sanitary sewer service will be provided to this site by extension of the existing sewer system from the Elk Meadows development to the east. Sewage flow will eventually go through the Kliever Lakes Fields lift station. • Water service will also be extended from the Elk Meadows development. Although the existing watermain is already looped to CSAH 12 and the watermain layout provides an internal looping in the plat, essentially all but two of the lots will be serviced from a long dead end until future loops are constructed with additional development. s:\PLANNING\Case Files\2004\P 04-17 Belmont Estates\07 15 04 Engineers ltr.doc