Consider Change Order for City Improvement Project #12-24 Division B

Last summer the City experienced several significant rainfall events that let to many localized flooding concerns and resident complaints.  The large volumes of precipitation that occurred over a short period of time appears to have elevated the groundwater within areas of the City and prohibited the generous rate of infiltration that typically takes place in the the Anoka sandplain.  The concerns were discussed several times at the Public Works Committee and three categories were established:

1. Those that required no further action.
2. Those that required additional investigation and evaluation before deciding on a long term solution and implementing corrective actions.
3. Those that had an identified recommendation for immediate action.

The ponding area at 5810 164th Lane fell into the third category.  This project was included in Division B of the 2012 Storm Sewer projects.  The proposed culvert is located at the natural low area along the street.  This is the middle of a yard and is not covered by a drainage and utility easement.  The homeowner was not interested in granting a drainage and utility easement at this location so the water will need to be routed to the drainage and utility easement along the east side of the lot.  This will require the removal of 11 trees and excavation of a trench to allow the water to drain.  These quantities were not included in the bid proposal.

Staff recommends approving this change order for tree removal and grading in the amount of $8,660.

Funding for this project is from the Storm Water Utility account.

Motion to authorize the proposed change order for tree removal and grading in the amount of $8,660.