(a) No discharger shall discharge or cause or allow to be discharged into the sewerage system any pollutant in concentrations above those specifically permitted in administrative orders issued by the Director. Administrative orders shall impose maximum discharge concentration limits or mass based limits where appropriate. In the absence of such administrative orders, no person shall discharge any of the following pollutants, except as such pollutants may occur, and only in the concentrations such pollutants may occur, in normal domestic sewage: Cadmium, Chromium - Total, Chromium Hexavalent, Copper, Lead, Nickel, Zinc, Mercury, Arsenic, Selenium, Molybdenum, Silver, Gold, Platinum, Palladium.
(b) The admission into the public sewers of any waters or waste having any or all of the following characteristics shall be subject to review and approval of the Director:
(1) A five-day biochemical oxygen demand greater than 300 parts per million by weight; or
(2) Containing more than 350 parts per million by weight of suspended solids; or
(3) Containing any quantity of substances having the characteristic described in Section 926.03; or
(4) Having an average daily flow greater than two percent (2%) of the average daily sewage flow of the City.
(c) The City may impose mass limitations on individual dischargers, when in the opinion of the Director it is necessary to attain the objectives set forth in Section 926.01.
(d) The City reserves the right to establish discharge limitations more stringent than those contained in this chapter, when in the opinion of the Director it is necessary to attain the objectives set forth in Section 926.01.