Agenda - Council - 05/28/2002 - Laserfiche WebLink

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-234- Prelimina.w Plat Review: Sur~ower Ridge Ap~l 24, 2002, Revised May. '~.,, ~00~ Page 3 of 4 Taere is a one-Shot discrepancy on outlet elevations of Pond B between the utility and grading plan. Class rlI riprap is required on ail aprons in stormwater ponds. The plan should be revised to more clearly define the drainage patterns around the building pads (i.e. Lots t8-2, Block 3). Toe plan should also consider extending storm sewer south on Helium Sr. to pick up runoff exiting the she to the east. There is a missing 882 contour around Lots t-5, Block 2 that needs to be included. ,Kress with [ess than 2% slope will requires a certificate of grading prior ro occupancy. Areas with less than 2¢/o slope include: Lots 1-10, Block 1; Lots 6-13, Block 2; Lots __, ' ;,-.~0, and 42-49, Block 4. '~o Block .;; Lots 7-19, ''< ' A final grading plan must be submitted as parr of the fi_hal plat. items to be included on the tinal grade plan are as follows: Storm sewer size, type, and inverts Cfitical drainage swale elevations > Drainage and utility easements House sq/ie with detail and able that includes house '.rype, iow floor elevation, garage floor elevation, lowest opening e!evation, 100-year flood elevation, street center line elevations, and front and rear yard slopes. Drainage and Utilitv Easements: There are. wetlands wit. kin the boundaries of the plat that have been appropriately delineated and encumbered with drainage and utility easements. The storm sewer alignment is proposed to be encumbered with a drainage and utility easement. The sewer and water alignment will also have to be identified with drainage and atility easement on the final plat. A 20-foot drainage and utility easement must be provided for the sanitary sewer and water main when located outside of public road fight-of wa,./. A ten-foot drainage and utility, easement must also be provided around the perimeter of the plat. Traffic Generation Analysis: You have hired Hakanson Anderson to complete a traffic impact study tbr Surrtlower Ridge. That study is attached to the case. The City has also hired Hakanson Anderson for an analysis of the cumulative effect of traffic generated from the area. Those results are not yet available. Utilities and Water Usam: The development will be served by municipal water and samtary sewer. Options fbr service are: a) developer extend sewer trunk and any costs incurred above and beyond the sewer and water trunk tees due would be the responsibili~ of the developer; b) the developer can wait for the interceptor; c) developer can work out a lift station plan with surrounding developments that could be vacated when the interceptor gets to the area. You have opted to plan ibr a lift station that would be deep enough to serve all four developments (Wildlife Sanctuary 2''a and Evergreen Point, and SunIlower Ridge). This lift station has been proposed to be located