The charges for industrial wastes treatment pursuant to Section 1052.05 shall apply to wastes not exceeding normal concentrations as follows:
(a) BOD - 200 milligrams per liter;
(b) Suspended solids - 240 milligrams per liter;
(c) Phosphorus (as P) - 12 milligrams per liter; and
(d) Chemical oxygen demand (COD) - 1,000 milligrams per liter.
Applicable concentrations shall be based upon average concentrations, weighted in proportion to volume of flow, determined during each quarterly billing period by the most practical method possible. Should the average concentration of any constituent exceed the normal concentration provided in this section, a surcharge for each constituent so exceeded shall apply for the applicable quarterly billing period, in accordance with the provisions of Section 1052.06. (Ord. 20-82. Passed 3-16-82.)