During the public open house in advance of the 2011 SMP, a drainage concern was identified on 153rd Lane, east of Roanoke Street.  This road currently has a flat grades that drains east to west, and there isn't any storm sewer in the area to collect drainage prior to discharging overland onto Roanoke Street, therefore water stands on the street and is causing premature deterioration of the pavement.  Staff quickly evaluated the concern since we were already working in the area completing the Alpine/Roanoke project from 2010.

It has been determined that the best approach to resolve this drainage concern is to extend the nearest storm sewer in the area to the location of 153rd Lane and Roanoke Street, such that additional improvements can be incorporated into the 2011 SMP to correct the problem.  Staff is requesting a change order to the Alpine/Roanoke contract to install the required storm sewer extensions before Roanoke Street is milled and overlaid to complete the 2010 contract with Rum River.  If we do not extend storm sewer at this time we will lose the opportunity to solve this concern without spending significantly more money at a later date, and impacting the roadway that would have recently received an overlay; basically performing the same work twice in consecutive years.  Staff prepared a design for the storm sewer extension and submitted to Rum River for pricing (see attached).

Funding for this change order is proposed to come from the City's Stormwater Utility Fund.