Each industrial or non-industrial user who discharges wastes into the sewerage system shall be subject to a surcharge, in addition to the regular sewer charges, based on both the biochemical oxygen demand (or on the chemical oxygen demand where BOD cannot be determined) and the suspended solids content of the wastes, if these wastes have a concentration of greater than the following:
(A) A biochemical oxygen demand of 250 milligrams per liter; or where BOD cannot be determined, then, in lieu of BOD, a chemical oxygen demand of 400 milligrams per liter; or
(B) A suspended solids content of 250 milligrams per liter.
(2008 Code, § 2.3.10)