CAPITAL INVESTMENTS | WATER

Well 6 Cathodic Protection System and Reservoir Interior Painting

Well No. 6.

DESCRIPTION

PROJECT ID: W 12.0, W 13.0
ESTIMATED COST: $282,000*
ACTUAL COST: $240,423.75**
  • Install a cathodic protection system in the interior of the reservoir
  • Uses relatively inert anodes connected to a power supply
  • System will be suspended inside the reservoir, protecting reservoir from corrosion
  • Piping will need protective coat to prevent contamination
  • After painting, reservoir will need to be disinfected before refilling

WHY IT’S NEEDED

The Well No. 6, Reservoir No. 1 does not have a cathodic protection system, while the newer Reservoir No. 2 does. Steel naturally reacts with water and oxygen, returning to its more stable chemical state of iron oxide. Cathodic protection extends the life of a steel water reservoir by providing a sacrificial anode within the reservoir.

The reservoir was built in 1991 and the interior hasn’t ever been recoated. Without previous cathodic protection, a new coat is needed.

* Initial projected costs were $62,000 for W 12.0 and $220,000 for W 13.0.

** This project came in about $42,000 under the original estimate because of a number of very competitive bids from local contractors as well as efficiencies gained by combining the two original projects in to one.

PROJECT STATUS:
Complete
PROJECT MILESTONES

February 2020

Projects W 12.0 and W 13.0 are combined and put out for bid.

March 2020

A contract was awarded to Columbia Industrial Coatings, LLC after receiving 7 bids.

Work begins, with expected completion in May 2020.

May 2020

Contractors complete most of the work, with minor punchlist items expected in June before project closeout and final costs are known.

LAST UPDATED: 08/27/20

City of Hermiston
180 NE 2nd Street, Hermiston, OR 97838
Phone: (541) 567-5521 | TTY/TDD @ 1-800-735-2900
Email: city@hermiston.or.us

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