HomeMy WebLinkAbout10.02.2006COUNCIL WORK SESSION
October 2, 2006
4:45 p.m.
Council Chambers
Members present: Mayor Hurley, Kincaid, Welper, Gunderson, Greenwood, Cole, Schmitt.
Members absent: Getty.
Moved by Schmitt, seconded by Gunderson that the Agenda, as proposed, be approved. Ayes:
Six. Absent: Getty. Motion carried.
The purpose of the work session was to discuss the Virden Creek Tributary Drainage Study as
prepared by Ament, Inc. The area of the study lies east of U.S. Highway 63 (Logan Avenue)
north of E. Donald Street, south of E. Airline Highway and west of Virden Creek.
The purpose of the study was to identify the cost effective solution to improve the drainage of
storm water from the area.
The total drainage area includes land lying north of W. Airline Highway and west of U.S.
Highway 63, with a total drainage area of 540 acres. A stream flowing through a box culvert
under W. Airline Highway defines the north upper portion of the drainage area. The south upper
portion does not have a defined waterway.
When U.S. Highway 63 was improved, culverts were installed to allow the drainage from the
upper north and south portions of the drainage area to flow under U.S. Highway 63.
Downstream from these culverts (the area of study), the drainage -way is poorly defined with
overland flow occurring.
Development in the area has increased with the addition of the Hy-Vee Store and the
improvements to Allen Hospital. New development is imminent with high potential for
development along the U.S. Highway 63 corridor.
The following four alternatives were evaluated:
A. All Channels with cunettes $ 879,540.00
B. All Channels with under -drain pipe $1,132,880.00
C. All Pipes $5,128,620.00
D. Combination Pipes and Channels $1,528,870.00
Alternative A is recommended as the lowest cost alternative meeting the goal of improving the
drainage east of U.S. Highway 63. This alternative uses open channel drainage ditches with
cunettes (concrete bottom for low flows and silt control). At the south U.S. Highway 63
crossing, the channel is 2.0 feet deep, and at the north crossing the channel is 3.5 feet deep.
These two branches combine east of 4th Street with a main channel draining southeasterly to
Virden Creek. At the intersection with Virden Creek, the drainage channel will be 5.0 feet deep.
Right-of-way from six private property owners and one public property owner is required.
Construction drawings/specifications and public bidding documents need to be prepared to let a
construction project. Construction could be completed in the summer of 2006.
The representative from Ament, Inc. commented that if the area was fully developed, the city
might want to take out the cunettes and put in storm sewer pipes.
Eric Thorson, City Engineer, reported bond funds would be used to fund the project. Mr.
Thorson asked for authorization to have Ament, Inc. prepare a final design contract and put
right-of-way plats together. It was the consensus of the council that the City Engineer forward
the final design contract to the full council for approval.
Discussion was heard on implementing a storm water management fee.
Council Work Session
October 2, 2006
Page 2
With no further business before the council, it was moved by Schmitt, seconded by Welper that
the meeting be adjourned at 5:05 p.m. Ayes: Six. Absent: Getty. Motion carried.
Nancy Eckert
City Clerk