Concrete washout captures rinse water and slurry from chutes, pumps, and tools

https://source-wiki.win/index.php/Portable_Concrete_Washout_Systems:_Benefits,_Costs,_and_ROI

Concrete washout captures rinse water and slurry from chutes, pumps, and tools, preventing high-pH runoff from polluting soils, drains, and waterways on and around active construction sites.