A. Prohibited Discharge Standards:
1. General Prohibitions: No user shall introduce or cause to be introduced into the City of Hayden WWCS or POTW any pollutant or wastewater which causes pass through or interference. These general prohibitions apply to all users of the City of Hayden WWCS and/or POTW whether or not they are subject to categorical pretreatment standards or any other national, State or local pretreatment standards or requirements.
2. Specific Prohibitions: No user shall introduce or cause to be introduced into the City of Hayden WWCS and/or POTW the following pollutants, substances or wastewater:
a. Pollutants which create a fire or explosive hazard in the City of Hayden WWCS or POTW, including, but not limited to, waste streams with a closed-cup flash point of less than one hundred forty degrees Fahrenheit (140°F) (60°C) using the test methods specified in 40 CFR 261.21;
b. Wastewater having a pH less than 5.0 or more than 9.0, or otherwise causing corrosive structural damage to the City of Hayden WWCS and/or POTW or equipment;
c. Solid or viscous substances in amounts which will cause obstruction of the flow in the City of Hayden WWCS and/or POTW resulting in interference, but in no case solids greater than one-half inch (1/2") in any dimension.
d. Pollutants, including oxygen demanding pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the City of Hayden WWCS and/or POTW;
e. Wastewater having a temperature which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed one hundred four degrees Fahrenheit (104°F) (40°C) unless the approval authority, upon the request of the City, approves alternate temperature limits;
f. Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through;
g. Pollutants which result in the presence of toxic gases, vapors or fumes within City of Hayden WWCS and/or POTW in a quantity that may cause acute worker health and safety problems;
h. Trucked or hauled pollutants, except at discharge points designated by the City of Hayden;
i. Noxious or malodorous liquids, gases, solids or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sewers for maintenance or repair;
j. Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently impart color to the treatment plant's effluent, thereby violating the HARSB's NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity by more than ten percent (10%) from the seasonably established norm for aquatic life;
k. Wastewater containing any radioactive wastes or isotopes except as specifically approved by the Superintendent in compliance with applicable State or Federal regulations;
l. Stormwater, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water and unpolluted wastewater, unless specifically authorized by the Superintendent;
m. Any sludge, screenings or other residues from the pretreatment of industrial wastes or from industrial processes;
n. Medical wastes, except as specifically authorized by the Superintendent;
o. Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;
p. Detergents, surface-active agents, or other substances which may cause excessive foaming in the City of Hayden WWCS and/or POTW;
q. Any liquid, solids or gases which by reason of their nature or quantity are or may be sufficient, either alone or by interaction with other substances, to cause fire or explosion or be injurious in any other way to the City of Hayden WWCS and/or POTW, or to the operation of the City of Hayden WWCS and/or POTW. At no time shall two (2) successive readings on an explosion meter, at the point of discharge into the system (or at any point in the system), be more than five percent (5%), nor any single reading over ten percent (10%) of the lower explosive limit (LEL) of the meter;
r. Grease, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dusts, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, gas, tar asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grindings or polishing wastes.
s. Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits.
t. Any wastewater, which, in the opinion of the Superintendent, can cause harm either to the sewers, sewage treatment process or equipment; have an adverse effect on the receiving stream; or can otherwise endanger life, limb, public property, or constitute a nuisance, unless allowed under special agreement by the Superintendent (except that no special waiver shall be given from categorical pretreatment standards).
u. The contents of any tank or other vessel owned or used by any person in the business of collecting or pumping sewage, effluent, septic tank waste or other wastewater unless said person has first obtained testing and approval as may be generally required by the HARSB and paid all fees assessed for the privilege of said discharge.
v. Any hazardous wastes as defined in rules published by the State of Idaho or in EPA rules 40 CFR part 261.
w. Persistent pesticides and/or pesticides regulated by the Federal Insecticide Fungicide Rodenticide Act (FIFRA).
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 City of Hayden WWCS and/or POTW.
B. Federal Categorical Pretreatment Standards: The national categorical pretreatment standards as amended and promulgated by EPA pursuant to the Act, and as found at 40 CFR chapter I, subchapter N, parts 405 - 471, are hereby incorporated and shall be enforceable under this chapter.
C. State Requirements: State requirements and limitations on discharges to the City of Hayden and/or POTW shall be met by all users which are subject to such standards in any instance in which they are more stringent than Federal requirements and limitations, or those in this chapter or in other applicable ordinances.
D. Local Limits:
1. The following pollutant limits are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following daily maximum allowable discharge limits:
a. | 0.003 mg/L | Arsenic |
IB mg/L | Cadmium | |
2.77 mg/L | Chromium | |
3.38 mg/L | Copper | |
1.2 mg/L | Cyanide | |
IB mg/L | Lead | |
0.0003 mg/L | Mercury | |
3.98 mg/L | Nickel | |
0.43 mg/L | Silver | |
IB mg/L | Zinc | |
100 mg/L | Oil and grease (petroleum and vegetable based) | |
IB | Discharge limits for listed metal will be calculated on an individual basis. Determination of local limits will be based on impact on TMDL and treatment process. | |
b. A standard five (5) day biochemical oxygen demand of four hundred milligrams per liter (400 mg/L) or fifty (50) pounds.
c. Four hundred milligrams per liter (400 mg/L) of suspended solids or fifty (50) pounds.
d. Nine milligrams per liter (9 mg/L) of total phosphorus or 1.9 pounds.
e. Forty milligrams per liter (40 mg/L) of total nitrogen or 8.3 pounds.
f. A flow of twenty five thousand (25,000) gallons.
g. A chlorine demand of twenty milligrams per liter (20 mg/L).
2. The limits as established in subsection D1 of this section apply at the point where the wastewater is discharged to the City of Hayden WWCS and/or POTW (end of the pipe). All concentrations for metallic substances are for "total" metal unless indicated otherwise. The Superintendent may impose mass limitations in addition to (or in place of) the concentration based limitations above. Where a user is subject to a categorical pretreatment standard and a local limit for a given pollutant, the more stringent limit or applicable pretreatment standard shall apply.
E. City's Right Of Revision: The City reserves the right to establish, by ordinance or in wastewater discharge permits, more stringent standards or requirements on discharges to the City of Hayden WWCS.
F. Special Agreement: The City reserves the right to enter into special agreements with users setting out special terms under which they may discharge to the City of Hayden WWCS. In no case will a special agreement waive compliance with a categorical pretreatment standard or Federal pretreatment requirement. However, users may request a net gross adjustment to a categorical standard in accordance with 40 CFR section 403.15. They may also request a variance from the categorical pretreatment standard from the approval authority in accordance with 40 CFR section 403.13.
G. Dilution: No user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with an applicable pretreatment standard or requirement unless expressly authorized by an applicable pretreatment standard or requirement. The Superintendent may impose mass limitations on users which he believes may be using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
H. Pretreatment Facilities: Users shall provide necessary wastewater treatment as required to comply with this chapter and shall achieve compliance with all applicable pretreatment standards and requirements set out in this chapter within the time limitations specified by the EPA, the State, or the Superintendent, whichever is more stringent. Any facilities required to pretreat wastewater to a level acceptable to the City shall be provided, operated and maintained at the user's expense. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the City for review, and shall be acceptable to the City before construction of the facility. The review of such plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility as necessary to produce an acceptable discharge to the City under the provisions of this chapter.
I. Deadline For Compliance With Applicable Pretreatment Requirements:
1. Compliance by existing sources covered by categorical pretreatment standards shall be within three (3) years of the date the standard is effective unless a shorter compliance time is specified in the appropriate standard. The City shall establish a final compliance deadline date for any existing user not covered by categorical pretreatment standards or for any categorical user when the local limits for said user are more restrictive than the Federal categorical pretreatment standards.
2. New source and new users are required to comply with applicable pretreatment standards within the shortest feasible time (not to exceed 90 days from the beginning of discharge). New sources and new users shall install, have in operating condition, and shall start up all pollution control equipment required to meet applicable pretreatment standards before beginning to discharge.
3. Any wastewater discharge permit issued to a categorical user shall not contain a compliance date beyond any deadline date established in EPA's categorical pretreatment standards. Any other existing user or a categorical user that must comply with a more stringent local limit which is in noncompliance with any local limits shall be provided with a compliance schedule placed in an industrial wastewater permit to ensure compliance within the shortest time feasible.
J. Additional Pretreatment Measures:
1. Whenever deemed necessary, the Superintendent may require users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage waste streams from industrial waste streams, and such other conditions as may be necessary to protect the City of Hayden WWCS and/or POTW and determine the user's compliance with the requirements of this chapter.
2. A wastewater discharge permit may be issued solely for flow equalization.
3. Grease, oil and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand; except that such interceptors shall not be required for residential users. All interception units shall be of type and capacity approved by the Superintendent and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned and repaired regularly, as needed, by the user at his expense.
4. Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
K. Accidental Spill Prevention Plans: The Superintendent may require any user to develop and implement an accidental spill prevention plan (ASPP) or slug control plan. Where deemed necessary by the City, facilities to prevent accidental discharge or slug discharges of pollutants shall be provided and maintained at the user's cost and expense. An accidental spill prevention plan or slug control plan showing facilities and operating procedures to provide this protection shall be submitted to the City for review and approval before implementation. The City shall determine which user is required to develop a plan and require said plan to be submitted within ninety (90) days after notification by the City. Each user shall implement its ASPP as submitted or as modified after such plan has been reviewed and approved by the City. Review and approval of such plans and operating procedures by the City shall not relieve the user from the responsibility to modify its facility as necessary to meet the requirements of this chapter.
1. Any user required to develop and implement an accidental spill prevention plan shall submit a plan which addresses, 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 City and POTW of any accidental or slug discharge. Such notification must also be given for any discharge which would violate any of the standards in subsections A through D of this section; 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 site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic chemicals (including solvents), and/or measures and equipment for emergency response.
2. Users shall notify the City and HARSB wastewater treatment plant immediately after the occurrence of a slug or accidental discharge of substances regulated by this chapter. The notification shall include location of discharge, date and time thereof, type of waste, concentration and volume, and corrective actions. Any affected user shall be liable for any expense, loss or damage to the City of Hayden WWCS and/or POTW, in addition to the amount of any fines imposed on the City and HARSB on account thereof under State or Federal law.
3. Within five (5) days following an accidental discharge, the user shall submit to the Superintendent a detailed written report describing the cause of the discharge and the measures to be taken by the user to prevent similar future occurrences. Such notification shall not relieve the user of any expense, loss, damage or other liability which may be incurred as a result of damage to the City of Hayden WWCS and/or POTW, fish kills, or any other damage to persons or property, nor shall such notification relieve the user of any fines, civil penalties or other liability which may be imposed by this chapter or other applicable law.
4. Signs shall be permanently posted in conspicuous places on the user's premises advising employees whom to call in the event of a slug or accidental discharge. Employers shall instruct all employees who may cause or discover such a discharge with respect to emergency notification procedures.
L. Septic Tank Wastes: The dumping of untreated septic tank wastes into the City of Hayden WWCS and/or POTW is strictly prohibited. The City may by special agreement consider accepting treated septic tank wastes. (Ord. 276, 11-10-1998; amd. Ord. 596, 5-24-2019)