(a) General Discharge Prohibitions. No discharger shall contribute or cause to be discharged, directly or indirectly, any of the following described substances into the POTW or otherwise to the facilities of the City:
(1) Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction to cause fire or explosion, but in no case discharges with a closed cup flashpoint of less than 140 degrees Fahrenheit (sixty degrees Centigrade) using the test method specified in 40 CFR 261.21. (Ord. 14-26. Passed 5-5-14.)
(2) Solid or viscous substances which will or may cause obstruction to the flow in a sewer or other interference with the operation of the POTW, including but not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, batter, starch, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups and milk containers, either whole or ground by garbage grinders.
(3) Any wastewater having a pH less than 5.5 or higher than 8.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the system.
(Ord. 15-9. Passed 3-2-15.)
(4) Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction, to injure or interfere with any wastewater treatment process or constitute a hazard to humans or animals. A toxic pollutant shall include but not be limited to any pollutant identified in the Priority Pollutant List set forth in Appendix A hereto.
(5) Any substance which may cause the POTW's effluent or treatment residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or State standards applicable to the sludge management method being used.
(6) Any substance which will cause the POTW to violate its NPDES and/or other disposal system permits.
(7) Any wastewater with a temperature at the introduction into the POTW wastewater treatment plant which exceeds forty degrees Centigrade (104 degrees Fahrenheit).
(8) Any slugload.
(9) Any wastewater containing any radioactive wastes or isotopes of such halflife or concentrations as exceed limits in compliance with applicable State or federal regulations.
(10) Any liquids, solids or gases which either singly or by interaction result in toxic or malodorous gases, vapors or fumes which cause a public nuisance, health and safety problems, or danger to W.P.C.C. workers.
(11) Discharges of petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin are now prohibited if discharged in amounts that can pass through or cause interference of the POTW.
(12) Hauled septic or industrial wastes except at locations and at times as designated by the City Administrator. Any removal of manhole lids, or other access to the sewer system for the purpose of discharging wastes at times and/or locations other than those designated by the City Administrator, or without the expressed permission of the City Administrator, shall be considered a violation and shall be subject to enforcement action including fines and penalties allowed under this chapter.
(b) Limitations on Wastewater Strength.
(1) National Categorical Pretreatment Standards: As promulgated by the U.S. Environmental Protection Agency (U.S. EPA) pursuant to the Act, these standards shall be met by all dischargers of the regulated industrial categories. An application for modification of the National Categorical Pretreatment Standards may be considered for submittal to the Regional Administrator by the City Administrator, when the City's wastewater treatment system achieves consistent removal of the pollutants as defined by 40 CFR 403.7.
(2) Right of revision. The City reserves the right to amend this chapter to provide for more stringent limitations or requirements on discharges to the POTW where deemed necessary to comply with the objectives set forth in Section 908.01. If circumstances warrant, the City reserves the right to adopt other pollutant limitations for a particular industry in addition to or in place of local limits.
(3) Dilution. No discharger shall increase the use of potable or process water in any way, nor mix separate waste streams for the purpose of diluting a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the standards set forth in this chapter.
(4) Supplementary limitations. No discharger shall discharge wastewater containing concentrations of the following enumerated materials exceeding the following values:
Material | Concentrations (mg/L) |
Arsenic | 0.12 mg/L |
Cadmium | 0.07 mg/L |
Chromium (Total) | 1.61 mg/L |
Chromium (Hexavalent) | 1.21 mg/L |
Copper | 0.60 mg/L |
Cyanide | 0.46 mg/L |
Lead | 0.49 mg/L |
Mercury | BMP |
Molybdenum | 3.10 mg/L |
Nickel | 1.248 mg/L |
Selenium | 0.07 mg/L |
Silver | 0.13 mg/L |
Zinc | 3.66 mg/L |
(5) Best Management Practices (BMP) Plan. The City Administer may require Best Management Practices (BMPs) Plans, by ordinance or in individual wastewater discharge permits to implement Local Limits and the requirements of 908.03.
A. Grease, oil, and sand interceptors shall be provided when, in the opinion of the authority, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand. All interception units shall be of a type and capacity approved by the authority, shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired by the discharger at their expense.
B. Mercury. The goal of the BMP plan is to maintain effluent concentrations of mercury at or below a calculated local limit. However, in no case will the permittee discharge mercury above the current limit as stated in 908.03.
1. Within 12 months of notice to require a BMP the discharger shall develop a BMP plan and submit it to the City Administrator for review and approval. The objective of this plan is to identify pollution prevention and wastewater reduction opportunities and to implement those opportunities that are technically and economically feasible. The plan shall include the following.
a. A list of members of a cross-functional team responsible for developing the BMP plan. This list shall include the name of a designated team leader.
b. An inventory of sources of pollutants subject to the BMP plan. The inventory shall include a description of each source and pollutant loading from each source. Also, included should be the identification of the facility's benchmark for each pollutant subject to the BMP plan.
c. Description of current and past BMPs and their effectiveness.
2. Identification of technical/economical evaluation of new BMPs. BMPs should include:
a. Substitution of materials; reformulation or redesign of products; modification of equipment, facilities, technology, processes, and procedures; and improvement in management, inventory control, materials handling or general operational phases of the facility.
b. A schedule for implementation of economically feasible BMPs.
c. Methods used for measuring progress towards the BMP goal and updating the BMP plan.
d. Monitoring requirements - The discharger shall monitor potential sources of mercury at least twice per year by grab at sample station(s).
3. Within 12 months of the effective date of an approved BMP and every year thereafter, the discharger shall submit an annual report to he City Administrator. The annual report shall include:
a. All BMP plan monitoring results for the year;
b. An updated inventory of sources of pollutants subject to the BMP plan;
c. A summary of effectiveness of all BMPs implemented to meet the BMP plan goal; and
d. Any updates to the BMP plan.
4. The BMP may be modified, or revoked and reissued, to revise or remove the requirements of this paragraph based on information collected under this paragraph.
(c) Accidental Discharges/Slug Discharges Control.
(1) Each user shall provide protection from accidental discharge of prohibited or restricted materials or substances established by this chapter. Where necessary, facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the user's cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the City Administer for review, and shall be approved by the City Administer prior to construction of the facility. Each existing user shall complete its plan and submit same to the City Administer within 180 days after this chapter is in effect. No user who discharges to the City
POTW after the aforesaid date shall be permitted to introduce pollutants into the system until accidental discharge protection procedures have been approved by the City Administer. Review and approval of such plans and operating procedures by the City Administer shall not relieve the user from the responsibility to modify its facility as necessary to meet the requirements of this chapter.
(2) The City Administer shall evaluate whether each significant industrial user needs an accidental discharge/slug discharge control plan or other action to control slug discharges. The City Administer may require any discharger 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 City Administer may develop such a plan for any discharger. An accidental discharge/slug discharge control plan shall address, at a minimum, the following:
A. Description of discharge practices, including non-routine batch discharges;
B . Description of stored chemicals;
C. Procedures for immediately notifying the authority of any accidental or Slug Discharge, as required by this Section 908.03 of this ordinance; 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, employee training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.
(3) Users shall verbally notify the City Administer immediately upon the occurrence of a "slugload" or accidental discharge of substances prohibited by this chapter with a written notification letter to follow within three working days. Both notifications shall include location of discharge, date and time thereof, type of waste, concentration and volume and corrective actions. Any user who discharges a slugload of prohibited materials shall be liable for any expense, loss or damage to the POTW, in addition to the amount of any fines imposed on the Authority on account thereof under State or Federal law.
(4) Significant industrial users are required to notify the City Administer of any significant changes to the discharger's operations or system which might alter the nature, quality, volume or potential for slug discharges of its wastewater at least 30 days before the change.
(5) Employers shall instruct all employees who may cause or discover a slug or accidental discharge with respect to proper emergency notification procedures. This emergency notification procedure shall include the proper person to notify at the POTW.
(6) The City Administer shall evaluate the need for a plan, device or structure to control a potential slug discharge at least once during the term of each significant industrial user's control mechanism or within one year of being identified a significant industrial user.
(d) New Sources. New sources shall install and have in operating condition, and shall start-up all pollution control equipment required to meet applicable pretreatment standards before beginning to discharge. Within the shortest feasible time (not to exceed ninety days), new sources shall meet all applicable pretreatment standards.
(1) When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the Control Authority may convert the limits to equivalent limitations expressed either as mass of pollutant discharged per day of effluent concentration for purposes of calculating effluent limitations applicable to individual industrial users.
(2) Equivalent mass-per-day limitations shall be calculated by multiplying standard limits by the IU's average production.
(e) Bypass. "Bypass" means the intentional diversion of wastestreams from any portion of an industrial user's treatment facility.
(1) An industrial user may allow any bypass to occur which does not cause pretreatment standards or requirements to be violated, but only if it also is for essential maintenance to assure efficient operation.
(2) If an industrial user knows in advance of the need for a bypass, it shall submit prior notice to the Control Authority, if possible at least ten days before the date of the bypass.
(3) An industrial user shall submit oral notice of an unanticipated bypass that exceeds applicable pretreatment standards to the Control Authority within twenty-four hours from the time the industrial user becomes aware of the bypass. A written submission shall also be provided within five days of the time the industrial user becomes aware of the bypass. The written submission shall contain a description of the bypass and its cause; the duration of the bypass, including exact dates and times, and, if the bypass has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate and prevent reoccurrence of the bypass.
(4) Bypass is prohibited, and the Control Authority may take enforcement action against an industrial user for a bypass, unless the bypass was unavoidable to prevent loss of life, personal injury or severe property damage. (Ord. 14-26. Passed 5-5-14.)