The following described substances, materials, waters, or waste shall be discharged to the public sewer only in concentrations or quantities which will not harm either the wastewater treatment works or its personnel, will not have an adverse effect on the receiving stream, or will not otherwise endanger lives or public property or constitute a nuisance. The Administrator may set limitations more restrictive than the limitations established below if said limitations are necessary to meet the objectives of this chapter, in the Administrator's opinion. Deliberate dilution with unpolluted water to meet the concentrations established below shall not be acceptable. In forming an opinion as to acceptability, the Administrator shall give consideration to such facts as the quantity of subject waste in relation to flows and velocities in the public sewer, materials of construction of the public sewer, the wastewater treatment process employed, the capacity of the wastewater treatment plant, the degree of treatability of the waste in the wastewater treatment plant, and other pertinent factors:
(a) Wastewater with a CBOD concentration greater than 600 parts per million or with a suspended solids concentration greater than 900 parts per million.
(b) Wastewater having a temperature higher than 150°F.
(c) Wastewater containing more than 50 mg per liter of petroleum oil, nonbiodegradeable cutting oils, any product of mineral oil origin, or floatable oils, fat, wax, or grease.
(d) Wastewater containing toxic, hazardous solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the wastewater treatment plant.
(e) In accordance with Section 307(a) of the Clean Water Act (§33 U.S.C. §1317(a)), the following concentrations shall be considered toxic and/or hazardous and shall not be exceeded in wastes discharged to the public sewers:
(1) Arsenic: 0.2mg/l.
(2) Barium: 1.0mg/l.
(3) Boron: 5.0mg/l.
(4) Cadmium: 0.1mg/l.
(5) Chromium +3: 0.5 mg/l.
(6) Chromium +6: 0.5 mg/1.
(7) Cobalt: 1.0 mg/1.
(8) Copper: 0.5 mg/1.
(9) Cyanide (CN): None permitted
(10) Fluoride: 5.0 mg/l.
(11) Iron: 5.0 mg/1.
(12) Lead: 0.5 mg/1.
(13) Mercury: 0.02 mg/1.
(14) Molybdenum: 5.0 mg/1.
(15) Nickel: 2.0 mg/1.
(16) Phenols: 5.0 mg/1.
(17) Radioactive substances: Gross Beta Activity (in the known absence of strontium and Alpha emitters) - 1000/micro curies/l
(18) Selenium: 0.10 mg/1.
(19) Silver: 0.03 mg/1.
(20) Sulfides: 50.0 mg/1.
(21) Total dissolved solids: 1500 mg/1.
(22) Tungsten: 5.0 mg/1.
(23) Zinc: 2.0 mg/1.
These maximum concentrations may be changed as necessary by the Administrator or by federal or state regulatory agencies based on new information concerning inhibitory substances or to protect the treatment plant process. Industrial discharges covered by federal pretreatment requirements shall meet those limitations specified in the effluent regulations published pursuant to Section 307(b) of the Clean Water Act (33 U.S.C. Section 1317(b)), or the above concentrations, whichever limitations are more stringent.
(f) Wastewater containing odor-producing substances exceeding limits which may be established by the Administrator or any local or state regulatory agencies.
(g) Quantities of flow, concentrations, or both which constitute a "slug".
(h) Wastewater containing substances which are not amenable to treatment or reduction by the wastewater treatment process employed, or is amenable to treatment but not to such a degree that the wastewater treatment plant effluent can meet the requirements of other agencies having jurisdiction over discharges to the waters of the State.
(i) Wastewater which by interaction with other water or wastes in the public sewer, releases obnoxious gases, forms suspended solids which interfere with the collection system, or creates a condition deleterious to the wastewater treatment works.
(j) Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than 140°F (60° C) using the test methods specified in 40 CFR 261.21;
(k) Wastewater having a pH less than 5.0 or more than 9.0, or otherwise causing corrosive structural damage to the POTW or equipment.
(1) Trucked or hauled pollutants, except at discharge points designated and approved by the Administrator.
(m) Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye waste and vegetable tanning solutions, which consequently imparts color to the treatment plant's effluent, thereby violating Millersburg's NPDES permit.
(n) Wastewater containing radioactive wastes or isotopes except in compliance with applicable State or Federal regulations.
(o) Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, non contact cooling water, and unpolluted wastewater, unless authorized by the Administrator.
(p) Sludges, screenings, or other residues from the pretreatment of industrial wastes.
(q) Medical wastes, except as specifically authorized by the Administrator in a wastewater discharge permit.
(r) Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
(s) Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW.
(Ord. 2010-107. Passed 1-24-11.)