The depth of effective soil for effluent filtration that exists between the bottom of a dispersal field and the restrictive or limiting layer or feature including, but not limited to:
(a) Permanent or seasonal groundwater level; or
(b) Consolidated soil with insufficient permeability or porosity to provide wastewater treatment; or
(c) Fractured rock with excessive permeability that would not provide effective wastewater treatment; or
(d) Soils determined to be limiting as defined in the Manual.
(Ord. 1469, eff. July 14, 2016)