BOD and coliform bacteria concentrations are also reduced. After the water has propagated through the filter material, it is usually collected in a perforated PVC pipe underdrain, and then transported ...
also known as an underdrain, that is designed to collect and redirect subsurface water before it saturates the road surface. Also, 12,300 feet of asphalt gutter will be constructed, and existing ...
Focus continues on the Lower Platform, where concrete work is well underway, and the Tailing Storage Facility, with underdrain embankment fill and pipe installation advancing at a good pace.
According to the company, the focus continues on the lower platform, where concrete work is well underway, and on the tailing storage facility, where underdrain embankment fill and pipe ...