Sludge Beds Improvements

Sludge Beds Improvements

Project Manager

Water Resources / Peter Armans, P.E.

SUA Project No. 15SG05

What We're Doing

The City of Stillwater and Stillwater Utilities Authority is upgrading three of the sludge beds at the Wastewater Treatment Plant.


Upgrades include replacement of deteriorated concrete and reversal of the slope of the beds to provide better access to collection equipment. The other sludge beds will remain in service during this project to maintain the plant's capacity.



May 1, 2016: Design for this project is in progress. The Water Resources Department reviewed the design engineer's drawings and provided comments.

February 3, 2017: Water Resources staff made the decision to combine this project with the Flow Equalization Basin in order to gain efficiencies and reduce the overall cost. The design is complete and the engineer is working to assemble the contract documents for advertisement and bidding.

June 16, 2017: Bids from Contractors have been received and staff are evaluating the submittals before making a selection.

October 13, 2017: Contract was awarded to Wynn Construction Co., Inc. and construction began September 18, 2017.

November 15, 2017: Concrete is being poured in the sludge holding beds at the WWTP.

Image of a concrete pump that's pouring concrete into the sludge holding beds

January 15, 2018: Contract was extended to complete work on six additional sludge beds needing rehabilitation.

April 27, 2018: Project is substantially complete. Contractor is currently working on final touch-ups and restoration.

Actions authorized by Stillwater Utilities Authority (SUA):

  • 8.7.17  I  SUA-17-23  I Bid Recommendation


(Click map to enlarge)

Design concept for Sludge Beds Maintenance. Pointing to Sludge bed location on overall aerial map of Waste Water Treatment Plant.