Waiora WTP Sand Filter Refurbishments

⁠⁠⁠Hamilton City Council is seeking tenders from suitably experienced parties for the refurbishment of 3 sand filters at the Waiora Water Treatment Plant.

The Contract is a NZS3910:2013 over 3 years. Each filter is a separable portion of the Contract to be completed in the off peak water demand seasons. The scope for each filter includes:
-Isolating the filter and removing the existing filter media and nozzles
-Preparing the concrete walls by grinding
-Coating the walls in a polyurea coating
-Washing the filter underdrains and reinstalling the nozzles
-Reinstalling the filter media