Dunham Lake Dam Repairs Planned

This National Weather Service photo shows the major damage which was done by severe flooding to the Dunham Lake Dam and spillway in May 2010.

PJ Martin

Editor

The Herald-News

 

The Edmonton City Council held a specially called meeting on July 13th by teleconference in order to adhere to the Governor’s social distancing regulations.

The main topic of discussion was repairing the Dunham Lake Dam spillway. Public Works Superintendent Moe Hensley advised the council members of core sampling results done by engineers from Herrick Company, Inc.

Hensley stated that, “Doug Harrington came down and core drilled all that and found some pretty good cavities under the spillway starting at the top all the way at the bottom.” He then explained the three options for repair presented by the engineers.

Option 1 – Drilling injection ports and inject polyurethane grout under the top flat section of the spillway slab only. The total lump sum cost is $16,500.

Option 2 – Drilling injection ports and inject polyurethane grout under the entire spillway slab approximately 100’ of 16’ wide slab, the 2 areas on each side of the spillway that has a 2’ to 4’ void under the slab. Drilling 12-inch holes on each side, pouring flowable fill into the large voids prior to the polyurethane grout. The total lump sum cost is $28,500.

Option 3 – Includes all work listed in option #2 plus addresses the voids under the sidewalks on both sides of the spillway which have 2’ to 5’ voids underneath. This option addresses the entire spillway slab and sidewalks. The total lump sum cost is $37,500.

Councilmember Curt Estes asked, “Moe don’t you think it would be better just to do it all?”

Hensley answered, “I really do. I think it would be best.” Mayor Doug Smith and Council members Teresa Hamlett, Faye Word, and Cathy Nunn all voiced their agreement and noted that it would prevent future problems.

To follow the procurement policy, a vote was approved to authorized bids on the project.

It was also mentioned that children have been seen playing at the lake and it is unsafe to do so. City Attorney Sharon Howard was asked to check with the city’s insurance provider about posting signs at the lake to advise of the danger.

Resolution 2020-21-01 CARES Act was approved allowing Mayor Smith to file a Coronavirus Relief Fund (CRF) application with the Department for Local Government (DLG) for reimbursement of expenses to the city during the course of the year.

Hensley also presented an update on the water project noting that he had spoken with the engineers and the state had approved the plans. City Clerk/Administrator Dawn Devore explained that after bids are taken and approved there would be a groundbreaking ceremony.

 

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