PROJECT BACKGROUND

The Water Supply Board selected Warren Environmental's 301-01 NSF approved epoxy coating system and A&W Coatings to rehabilitate their concrete conduits severely corroded from chloride attack. 

 
To maintain sanitary working conditions, the A&W team pressure washed and sterilized all staging and scaffolding equipment before it entered the water system. They also ensured the equipment being used had never been exposed to a sewer environment. 
 

The crew prepped the surface and used Warren's 151-HG hydrophobic injection grout to stop areas in the conduit with active infiltration. Afterward, 200-300 mils of Warren's potable safe epoxy was spray applied. The spray technicians used a higher millage on eroded areas such as beams and spalled walls when necessary. 
 

Our team also navigated significant challenges, including maintaining access for chlorine deliveries and working within scheduled plant shutdown days and times throughout the job.