No person shall discharge or cause to be discharged any pollutant which causes pass through, interference, or the below described materials, waters, or wastes (collectively, the substances) if it appears likely that acceptance of those wastes can harm the wastewater treatment process or equipment, the public sewers, the sanitary sewer systems, or have an adverse effect on the receiving water body, or can otherwise endanger life, limb, public property, or constitute a nuisance. The decision shall be based on those factors as the quantities subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the wastewater treatment process, capacity of the wastewater treatment plant, degree of treatability of waste in the wastewater treatment plant, and other pertinent factors. The substances restricted are:
(a) Flammable or explosive liquids, solids, or gases, including, but not limited to, gasoline, benzene, naptha, fuel oil, or other materials with a closed-cup flashpoint of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21.
(b) Pollutants having a pH of less than 5.5, or greater than 9.5, or otherwise causing corrosive damage to the WWF or its equipment or personnel.
(c) Pollutants, including oxygen-demanding pollutants (BOD, etc.) released at a flow rate and/or concentration which, either singly or by interaction with other pollutants, will cause interference with the WWF.
(d) Any liquid having a temperature higher than 150° F. or causing the wastewater treatment plant influent to exceed 104° F.
(e) Any water or waste containing petroleum oils, mineral oils, or non-biodegradable cutting oils in amounts that will cause interference or pass through, or any fats, wax, grease, or other oils, whether emulsified or not, in excess of 100 milligrams per liter or containing substances which may solidify or become viscous at temperatures between 32° F. and 150° F. (0° C. and 60° C).
(f) Pollutants which result in the presence of toxic gases, vapors, or fumes within the WWF in quantities that may cause acute worker health or safety problems.
(g) Any trucked or hauled wastes, except at discharge points designated by the Director. Industrial waste haulers may discharge loads only at locations designated by the Director. No load may be discharged without prior consent of the Director. The Director may collect samples of each hauled load to ensure compliance with applicable standards. The Director may require the industrial waste hauler to provide a waste analysis of any load prior to discharge.
(h) Any water or wastes containing toxic or poisonous or pathogenic 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 an acute health or safety hazard, interfere with the ability to repair or maintain the WWF, or create any hazard in the receiving waters of the wastewater treatment plant.
(i) Solid or viscous substances in quantities or of a size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, paper dishes, cups, milk containers, and the like, either whole or ground by garbage grinders. Penalties, see Sec.
26-177 (j) Wastes which impart color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consistently impart color to the treatment plant's effluent.
(k) Wastewater containing any radioactive wastes or isotopes except in compliance with applicable State or Federal regulations.
(l) Sludges, screenings, or other residues from the pretreatment of industrial wastes.
(m) Medical wastes, except as specifically authorized by the Director.
(n) Wastes causing, either alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
(o) Detergents, surface active agents, or other substances which may cause excessive foaming in the WWF.
(p) Any waters or wastes containing strong acid, iron, pickling wastes, or concentrated plating solutions whether neutralized or not.
(q) Any waters or wastes containing phenols or other taste or odor producing substances, in a concentration exceeding limits which may be established by the POTW as necessary after treatment of the composite sewage to meet the requirements of the state, federal, or other public agencies of jurisdiction for that discharge to the receiving waters.
(r) Any garbage that has not been properly shredded, which shall mean particles in size no greater than 1/2 inches measured in any dimension.
(s) Any waste containing restricted substances in quantities in excess of the City's local limits, measured at the point of discharge into any sewer system, as adopted by the South Central Regional Wastewater Treatment and Disposal Board and contained in the Interlocal Agreement entered into between the City of Boynton Beach and the City of Delray Beach. Such local limits are incorporated herein by reference. The City may also develop best management practices (BMPs) to implement local limits. Such BMPs shall be considered local limits and pretreatment standards for the purpose of this Article.
(t) Any waste from sodium-cycle action exchange (water softening) units from industrial or commercial users where the chloride content exceeds 645 milligrams per liter.
(u) Any water or waste with a chlorine demand greater than 15 milligrams per liter.
(v) Any radioactive wastes or isotopes or half- life or concentration as may exceed limits established by the POTW in compliance with applicable state or federal regulations.
(w) Volume of flow or concentration of wastes constituting a slug discharge as defined in Section
26-115.
(x) Any waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment only to that degree that the wastewater treatment plant effluent cannot meet the requirement of other agencies having jurisdiction over discharge to the receiving waters.
(y) Any waters or wastes containing suspended solids in excess of 400 milligrams per liter unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
(z) Any waters or wastes with a five-day, 20° C. B.O.D. greater than 400 milligrams per liter unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
(aa) Any waters or wastes containing chemical oxygen demand (COD) greater than 800 mg/l unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the WWF. Except where expressly authorized by an applicable pretreatment standard or requirement, no user shall ever increase the use of process water, or in any other way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with a pretreatment standard or requirement. The City may impose mass limitations on users that are using dilution to meet applicable pretreatment standards or requirements.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13)
