Summary of storm sewer work to be performed in October 2007

On 9/24/07 the City Council authorized awarding a contract to perform the following work:

Background: Due to neighborhood concerns about localized street flooding, staff recommended more detailed study of the storm water hydrology in the Millwood-Brenner-Avon neighborhood. This work was authorized by the City Council on June 19,2006. On July 16,2007, the City Council approved a storm sewer improvement project for the area. The project was advertised during August and September, and bids were opened on September 19,2007.

The proposed project consists of the following improvements:

Millwood Avenue and Brenner Street

a. Drain runoff from the vacant lot at 806 Brenner via a connection to storm sewer which flows directly to Lake Owasso.

b. Disconnect catch basins at 815 Millwood from the storm sewer that flows to Charlie Pond pipe and connect to the storm sewer that flows to Lake Owasso.

c. Connect a catch basin/manhole at 820 Millwood to the storm sewer that flows to Lake Owasso as a relief for high flow conditions

Avon Street

Replace the existing catch basins and pipe at the low point on Avon Street with larger grates and construct an additional catch basin to increase inlet capacity.

The City installed a larger storm sewer to the boulevard of the vacant lot at 806 Brenner.  It was not connected to the existing smaller sewer line that runs along the east lot line to an inlet about 100 feet back off the street.  The city is attempting to purchase the lot from the George Reiling estate.  When they take ownership the plan is to extend the larger sewer onto the lot and perhaps re-grade it in order to add to it's storage capacity and then abandon the existing line.  The city has an easement along the east edge of the lot, however, if they installed the new sewer line before acquiring the lot, there would have been no choice but to install the line in their easement which would have required cutting down virtually all the 60 foot trees at the east edge of the lot.  I brought up my concern about losing any of these trees and Roseville Public Works Director, Duane Schwartz, indicated that the City wants to preserve the trees too.  The two stage process was the result of that desire.

Click here to see pictures of the trees on the lot from about a dozen vantage points that were taken before the summer 2007 work was begun.