How can you safely dispose of concrete, mortar and paint slurry?

EPA’s Paint Filter 9095B Test: https://www.epa.gov/hw-sw846/sw-846-test-method-9095b-paint-filter-liquids-test

Boise State University Paint Filter Tests: https://outpak.com/wp-content/uploads/2018/11/Report_Oupack_Slurry_Solution-Lexis_Waltz-Yang_Lu-BSU.pdf