Deep wall trench definition
Deep wall trench means an absorption system consisting of deep excavated trenches utilizing coarse drain media, with a minimum sidewall absorption depth of 24 inches of suitable soil formation below the distribution pipe.
Deep wall trench means an absorption system consisting of deep trenches filled with clean, coarse filter material, with a minimum sidewall absorption depth of 24 inches of suitable soil formation below the distribution pipe, into which septic tank effluent is discharged for seepage into the soil.
Deep wall trench means an absorption system consisting of deep trenches filled with clean, coarse filter material,