SOUTHEAST WATER POLLUTION CONTROL PLANT CHLORINE CHANNEL REHABILITATION

LOCATION: 

SAN FRANCISCO, CA

CLIENT TYPE:

MUNICIPAL

MARKET:

WASTEWATER

WARREN PRODUCTS:

AT A GLANCE

• Condition Assessment 

• Corrosion 

• Infiltration 

• Large Concrete Channel 

• Structural Enhancement  

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PROJECT BACKGROUND

Warren Environmental's 301-14 epoxy coating system was used to protect, structurally enhance, and prevent water infiltration into the flows of the Southeast Water Pollution Control (SWPC) Plant's chlorine contact channels. The epoxy coating was spray applied to the interior surfaces of 1.2 miles of 18×16-foot cast-in-place concrete channel that had suffered substantial corrosion, exposing rebar and aggregate. 

 

San Francisco Public Utilities Commission hired V&A Consulting Engineers (V&A) to perform a condition assessment. V&A also compared spot repairs versus a full structural epoxy lining option for the rehabilitation. They recommended a complete lining of the channels due to the active and ongoing deterioration. Repairing only the areas with the most visual damage was unlikely to extend the structure's service life.  

 

A&W Coatings applied Warren Environmental's 301-14 epoxy – in a single coat ranging from 250-300 mils – to form a monolithic structural coating. The Warren Environmental system successfully refurbished the asset to protect it from future degradation. The epoxy system's unique ability to structurally repair and monolithically protect its host in a single coat made it the perfect solution.

ADDITIONAL PHOTOS