Plant Pond Cleanout

Odin was contracted to perform design and construction services at a power plant in our Rocky Mountain Region. The scope of work included construction of a water storage pond, and the removal of sludge from an existing water storage pond. For the new pond construction, this activity included approximately 38,000 CY of earthwork and lining the pond with 5.5 acres of polyethylene geomembrane. The pond was tied into existing plant water delivery infrastructure, to ensure that the Plants were removed in operation. The pond cleanout activity included soil mixing and offsite disposal of 34,000 tons of saturated lime sludge material, using conventional earthwork equipment. After removal of the sludge material, the existing clay liner was repaired to original elevations using an onsite source of clay material, which was placed and compacted to meet the minimum site permeability requirement of 1 x 10-6 cm/sec. After placement of the liner material, the slopes of the pond were protected with additional riprap placement. Approximately 10,000 CY of clay was placed to bring the liner back to grade.

Project Details

Location
Eastern Colorado
Start Date
October 2020
End Date
April 2021
Service
Geotechnical Construction
Performed As
Prime

Project Highligths

  • Design and construction of an 8MG lined pond, including tie into existing plant infrastructure
  • Stabilization and disposal of ~34,000 tons of lime sludge material
  • Placement and compaction of ~11,000 CY of clay liner