[Ord. No. 1226, § I, 6-23-2020]
No person shall discharge or cause to be discharged, either by gravity drain or by force pump, any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer. No person shall at any time make any connection of any source of storm runoff, groundwater, or sources of uncontaminated water directly or indirectly to a public or private sewer. Stormwater and all other unpolluted drainage shall be discharged to such drains as are specifically designated as storm sewers, or to a natural outlet approved by the City Engineer.
[Ord. No. 1226, § I, 6-23-2020]
A. 
No person shall discharge or cause to be discharged any of the following described substances, materials, waters or wastes to any public sewer:
(1) 
Any waste stream containing gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas having a closed-cup flash point of less than 140° F. or 60° C., as measured using the test methods specified in 40 CFR 261.21.
(2) 
Any waters or waste containing toxic or poisonous 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.
(3) 
Any waters or waste having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the wastewater works.
(4) 
Solid or viscous substances in quantities or of such size capable of causing obstructions to the flow in sewers or other interference with the proper operation of the wastewater works, such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, garbage, trash, whole blood, paunch manure, hair and fleshings, entrails, and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(5) 
Any liquid or vapor having a temperature higher than 150° F., 65° C., and in no event at a temperature and quantity that will cause the temperature at the WWTP to exceed 104° F., 40° C.
(6) 
Waters or waste containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment only to such degree that wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(7) 
Any waters or waste having pollutants which may pass through or interfere with the operation or performance of the WWTP, including any substance which may cause the effluent or any other agencies having jurisdiction over said effluent or product discharge or disposal.
(8) 
Any industrial wastes which do not meet the requirements of national categorical pretreatment standards as specified in 40 CFR, Chapter I, Subchapter N, Parts 405 through 471, as amended.
(9) 
Any food wastes that has not been properly shredded. "Properly shredded food wastes" shall be defined as the wastes from the preparation, cooking and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than 1/2 inch (1.27 centimeters) in any dimension. The installation and operation of any food preparation area in-sink disposal unit equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Commissioner.
(10) 
Any waters or waste containing strong-acid iron-pickling wastes or concentrated plating solutions, whether neutralized or not.
(11) 
Any waters or waste containing iron, chromium, copper, zinc and similar objectionable or toxic substances; or wastes exerting an excessive chlorine demand, to such degree that any such material received in the composite wastewater sample(s) at the wastewater treatment works exceeds the limits established by the Commissioner for such materials.
(12) 
Any waters or wastes containing phenols or other taste- or odor-producing substances which, after treatment, may cause the composite wastewater sample(s) to fail to meet the requirements of the state, federal or other public agencies or jurisdiction for such discharge to the receiving waters.
(13) 
Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Commissioner in compliance with applicable state or federal regulations.
(14) 
Any waters or wastes having a pH in excess of 11.0.
(15) 
Materials which exert or cause:
(a) 
Unusual concentrations of inert suspended solids (such as, but not limited to, fuller's earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate).
(b) 
Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions).
(c) 
Unusual BOD, chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the wastewater treatment works.
(d) 
Unusual volume or flow or concentration of wastes constituting "slugs" as defined herein.
(16) 
Any wastewater or waste containing fats, wax, grease, or oils, including but not limited to petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, whether emulsified or not, in excess of 100 mg/l or in such lower amount as would cause interference or pass through. Dischargers are directed to the City's policies regarding the discharge of fats, oils, and grease (FOG) from food preparation and processing facilities. These policies require the installation and maintenance of equipment to remove excessive FOG from wastewater discharges.
(17) 
Any wastewater which contains herbicides, fertilizers, fungicides, or organo-sulfur or organo-phosphate pesticides.
(18) 
Pollutants which result in the formation of or presence of toxic gases, vapors, fumes or noxious odors within the wastewater system in any quantity that may cause acute worker health or safety problems.
(19) 
Any trucked or hauled pollutants, except at discharge points designated by the Commissioner.
(20) 
Any hazardous waste as defined in this chapter.
(21) 
Liquid solvents, including hexane or large quantities of alcohol, and gaseous solvents, including carbon dioxide, propane, or butane.
B. 
Any user discharging or proposing to discharge to the wastewater system any materials, substances, waters, wastes or pollutants specified in this section shall provide immediate notification to the Commissioner of the discharge or proposed discharge.
C. 
Nothing in this section shall prevent the establishment and application of specific pollutant discharge limits by the Commissioner on any user or on any individual discharger where materials, substances, waters, wastes or other pollutants discharged by the user or class of user have the potential, singly or in combination with other discharges, to result in pass through or interference in the operation of the WWTP.
[Ord. No. 1226, § I, 6-23-2020]
Except where expressly authorized to do so by an applicable pretreatment standard or requirement, no user shall 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.
[Ord. No. 1226, § I, 6-23-2020]
A. 
If any wastewater or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics in Sections 19-20 through 19-22 of this article and which, in judgment of the Commissioner, reasonably appear to present an imminent endangerment to the health or welfare of persons, the Commissioner may, with informal notice to any discharger, demand an immediate cessation of, or prevent, said discharge. With notice of the discharger as elsewhere contained in this chapter, the Commissioner may halt or prevent any discharge to the public sewer which presents or may present an endangerment to the environment or which threatens to interfere with the operation of WWTP. In addition to rejecting the wastes, the Commissioner may:
(1) 
Require pretreatment to an acceptable condition for discharge to the public sewers;
(2) 
Require control over the quantities and rates of discharged; and/or
(3) 
Require payment to cover the added cost of handling and treating the waste not covered by the existing user charge system.
B. 
If the Commissioner permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the Commissioner and subject to the requirements of all applicable codes, ordinances, laws and pretreatment standards. Any and all costs associated with the design, construction, operation and maintenance, and compliance with the conditions of this chapter are borne by the user, including the costs for City administration under this chapter.
C. 
Any discharger not in compliance with any categorical pretreatment standard, local limit, or other limit imposed by state or federal law shall submit to the Commissioner a compliance schedule meeting the requirements of this chapter, and, in the case of noncompliance with a categorical pretreatment standard, such schedule shall meet the requirements of 40 CFR Part 403. Not later than 14 days following each date in such schedule and the final date for compliance, the discharger shall submit a progress report to the Commissioner, indicating whether or not an increment of progress or final compliance date was met and, if not met, when compliance with that increment of progress or final compliance is expected.
D. 
Within 90 days of a final date of compliance with any categorical pretreatment standard, local limit, or limit imposed by state or federal law, or, in the case of a new source industrial user, within 90 days of commencement of discharge to the wastewater system, each industrial user shall submit to the Commissioner a report of compliance with the categorical pretreatment standard, local limit, or limit imposed by state or federal law, said report meeting the requirements of 40 CFR Part 403.
[Ord. No. 1226, § I, 6-23-2020]
Grease, oil and sand interceptors shall be provided when, in the opinion of the Commissioner, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand or other harmful ingredients, except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be a type and capacity approved by the Commissioner and shall be located as to be readily and easily accessible for cleaning and inspection.
[Ord. No. 1226, § I, 6-23-2020]
Where pretreatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at their expense. Detailed plans describing such facilities and operating procedures shall be submitted to the Commissioner for review and shall be acceptable to the Commissioner before such facilities are constructed. The review of such plans and operating procedures shall in no way relieve the user from the responsibility of modifying such facilities as necessary to produce a discharge acceptable to the City under the provisions of this chapter.
[Ord. No. 1226, § I, 6-23-2020]
The Commissioner shall evaluate whether each SIU needs an accidental discharge/slug discharge control plan or other action to control slug discharges. The Commissioner may require any user to develop, submit for approval, and implement such a plan or take such other action that may be necessary to control slug discharges. Alternatively, the Commissioner may develop such a plan for any user. An accidental discharge/slug discharge control plan shall address, at a minimum, the following:
A. 
Description of discharge practices, including nonroutine batch discharges;
B. 
Description of stored chemicals;
C. 
Procedures for immediately notifying the Commissioner of any accidental or slug discharge, as required by this chapter; and
D. 
Procedures to prevent adverse impact from any accidental or slug discharge. Such procedures include, but are not limited to, inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.
[Ord. No. 1226, § I, 6-23-2020]
Domestic septage may be introduced into the wastewater system only at locations designated by the Commissioner and at such times as are established by the Commissioner. Such waste shall not violate Section 19-21 of this chapter or any other requirements established by the City. The Commissioner requires domestic septage haulers to obtain annual permits through the City. No load may be discharged without prior consent of the Commissioner. The Commissioner and other duly authorized employees of the City may collect samples of each hauled load to ensure compliance with applicable standards.
[Ord. No. 1226, § I, 6-23-2020]
When required by the Commissioner, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole or sampling location, together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole or sampling location, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Commissioner. The manhole shall be installed by the owner at their expense and shall be maintained by them so as to be safe and accessible at all times.
[Ord. No. 1226, § I, 6-23-2020]
A. 
All measurements, tests, and analyses of the characteristics of wastewater and wastes to which reference is made in this chapter shall be determined in accordance with the test methods and procedures as established in 40 CFR Part 136 and shall be determined at the control manhole provided or upon samples taken at the control manhole or at such other sampling location or locations as may be specified by the Commissioner. In the event that no special manhole or sampling location has been provided, the control manhole or sampling locations shall be as determined by the Commissioner.
B. 
Sampling events shall be carried out by customarily accepted methods to reflect the effect of constituents upon the wastewater works and to determine the existence of hazards to life, limb and property. The sampling and analysis will be consistent with the applicable permit limits and the facility discharge method. The Commissioner may modify sampling and analytical methods in order to determine compliance with this chapter.
C. 
All industries discharging into a public sewer shall perform such monitoring of their discharges as the Commissioner and/or other duly authorized employees of the City may reasonably require, including installation, use, and maintenance of monitoring equipment, keeping records and reporting the results of such monitoring to the Commissioner. Such records shall be made available upon request by the Commissioner to other agencies having jurisdiction over discharges to the receiving waters. Industrial users shall maintain records of any monitoring activities and sampling results for a period of three years or during the course of any unresolved litigation regarding the industrial user to which the such records may be pertinent, whichever shall be the greater, and shall make such records available for inspection and copying by the Commissioner or their duly authorized representative on demand.
D. 
Any industrial user subject to a pretreatment standard shall provide to the Commissioner, at a minimum of once every six months or at such greater frequency as the Commissioner may require, a report of the nature, concentration and flow of pollutants in the discharge to the sewer from the establishment. Such report shall be signed by a responsible corporate officer or by a general partner or proprietor of the industrial user or by their duly authorized representative and submitted on a form and in such detail and extent as the Commissioner may require pursuant to the performance of their duties under the provisions of this chapter.