A. 
Prohibited discharge standards.
(1) 
General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass through or interference. These general prohibitions apply to all users of the 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 POTW the following pollutants, substances, or wastewater:
(a) 
Pollutants which create a fire or explosion 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;
(b) 
Wastewater having a pH less than 5.0 or more than 10.0 or otherwise causing corrosive structural damage to the POTW or equipment;
(c) 
Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the Wastewater Treatment Facilities such as but not limited to grease, garbage with particles greater than 1/2 inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, glass, straw, shavings, grass clippings, rags, tar, asphalt residues, chemical residues, paint residues, residues from refining, or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.
(d) 
Any pollutants, including oxygen demanding pollutants (BOD, etc.) released at a flow rate and/or pollutant concentration, which a user knows or has reason to know will cause interference to the POTW. In no case shall a slug load have a flow rate or contain concentration or mass of pollutants that exceed for any time period longer than 15 minutes more than five times the average twenty-four-hour concentration, quantities, or flow during normal operation.
(e) 
Any wastewater having a temperature which will inhibit biological activity in the POTW Treatment Plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW Treatment Plant which exceeds 40° C. (104° F.). An industrial user must limit the temperature range of its discharge to the POTW to between 65.6° C. (150° F.) and 0° C. (32° F.). The Wastewater System Superintendent is further authorized to limit the upper temperature to less than 65.6° C. (150° F.) if the temperature of the wastewater entering the Wastewater.
(f) 
Treatment Plant inhibits or interferes with biological activity in the treatment process.
(g) 
Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through;
(h) 
Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems;
(i) 
Trucked or hauled pollutants, except at discharge points designated by the Superintendent in accordance with § 11.24 of this chapter;
(j) 
A 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 and repair;
(k) 
Wastewater which imparts color which cannot be removed by the treatment process such as, but not limited to, ink wastes, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant's effluent, thereby violating South Milwaukee's WPDES permit;
(l) 
Wastewater containing any radioactive wastes or isotopes except in compliance with applicable state or federal regulations;
(m) 
An unpolluted water including but not limited to cooling water, stormwater or groundwater;
(n) 
Sludges, screenings or other residues from the pretreatment of industrial wastes.
(o) 
Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a Whole Effluent Toxicity test;
(p) 
Any substance, which may cause the POTW's effluent, or any other product of the POTW such as 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 non-compliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; or 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 criteria applicable to the sludge management method being used.
(q) 
Any substance, which will cause the POTW to violate its WPDES Permit or the receiving water quality standards.
(r) 
Wastewater containing inert suspended solids (such as but not limited to Fullers earth, lime slurries and lime residues) or dissolved solids (such as but not limited to sodium chloride and sodium sulfate) in such quantities that they would cause interference with the wastewater disposal system.
(s) 
Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW;
(t) 
A wastewater containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l which may solidify or become viscous at temperatures.
(u) 
Between 0° C. (32° F.) and 65.6° C. (150° F.);
(v) 
Wastewater causing two readings on an explosion hazard meter, at the point of discharge into the POTW or at any point in the POTW, of more than 5% or any single reading over 10% of the Lower Explosive Limit (LEL) of the meter. Prohibited materials include but are not limited to gasoline, kerosene, naphtha, benzene, fuel oil, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides, and any other substances which the City, the state or EPA has notified the user is a fire hazard or a hazard to the system.
(w) 
In no case shall the requirements of this chapter require a wastewater quality that is in excess of the quality of the local potable water supply.
B. 
Pollutants, substances, or wastewater prohibited by this subsection shall not be processed or stored in such a manner that they could be discharged to the POTW. When the Wastewater System Superintendent determines that an industrial user or other user is contributing to the POTW any of the above-enumerated substances in such amounts causing interference with the operation of the POTW, the Wastewater System Superintendent shall:
(1) 
Advise the industrial user(s) or other user(s) of the impact of the contribution on the POTW.
(2) 
Develop effluent limitation(s) for such industrial user(s) or other user(s) to correct the interference with the POTW.
The categorical pretreatment standards found at 40 CFR Chapter I, Subchapter N, Parts 405 through 471 are hereby incorporated.
A. 
Deadlines for compliance with categorical pretreatment standards by existing sources and new sources shall be in accordance with 40 CFR 403.6(b).
B. 
Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Superintendent may impose equivalent concentration or mass limits in accordance with 40 CFR 403.6(c).
C. 
When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the Superintendent shall impose an alternate limit using the combined wastestream formula in 40 CFR 403.6(e).
D. 
A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions in 40 CFR 403.13, that factors relating to its discharge are fundamentally different from the factors considered by EPA when developing the categorical pretreatment standard.
E. 
A user may obtain a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15.
A. 
Where the City's Wastewater Treatment System achieves consistent removal of pollutants limited by categorical pretreatment standards, the City may apply to the Approval Authority for modification of specific limits in the Categorical Pretreatment Standards. "Consistent Removal" shall mean reduction in the amount of a pollutant or alteration of the nature of a pollutant in the influent to a POTW to a less toxic or harmless state in the effluent which is achieved by that POTW measured according to the procedures set forth in 40 CFR, Part 403, promulgated pursuant to the act. The City may then modify pollutant discharge limits in the Categorical Pretreatment Standards if the requirements contained in 40 CFR, Part 403, are fulfilled and prior approval from the Approval Authority is obtained.
B. 
The Superintendent may use concentration-based limits in lieu of flow-based mass limits for users subject to the Organic Chemicals, Plastics, and Synthetic Fibers (OCPSF) (40 CFR Part 414), Petroleum Refining (40 CFR Part 419), and Pesticide Chemicals (40 CFR Part 455) categories, as established in 40 CFR 403.6(c)(6). The Superintendent may use equivalent mass-based limits in lieu of promulgated concentration-based limits for categorical users to facilitate the adoption of water-conserving technologies, per the conditions established in 40 CFR 403.6(c)(5).
C. 
Any user meeting the definition of a NSCIU and so designated by the Superintendent, will not be subject to wastewater discharge permit requirements, but must certify annually to the Superintendent that the user still meets the definition of a NSCIU and meets compliance requirements with applicable pretreatment standards, after having met Baseline Monitoring Report requirements. If the Superintendent determines that an existing NSCIU no longer meets the definition of a NSCIU or requirements to be in consistent compliance with pretreatment standards, then the user shall be classified as a SIU.
The State of Wisconsin Pretreatment Standards found in the Wisconsin Administrative Code NR 220 through NR 297 are hereby incorporated.
A. 
The following pollutant limits are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following maximum twenty-four-hour average limit:
Pollutant
Concentration
(mg/l)
Arsenic
0.44
Cadmium
0.1
Chromium
12.0
Copper
1.9
Cyanide (total)
0.28
Lead
0.45
Mercury
0.01
Molybdenum
0.4
Nickel
1.1
Selenium
0.15
Silver
0.4
Zinc
3.5
B. 
The above limits apply at the point where the wastewater is discharged to the POTW. 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, upon request by the user. The Superintendent may also impose Best Management Practices (BMPs) as an alternative to numeric local limits in accordance with 40 CFR 403.5. Examples of BMP use includes, but is not limited to, to prevent pollution through dental facility amalgam mercury capture, or photoprocessor silver reclaim. Users subject to BMPs shall provide documentation, as required by the Superintendent, to demonstrate compliance with the BMP.
The City reserves the right to establish, by chapter, or in wastewater discharge permits, more stringent standards or requirements on discharges to the POTW.
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 a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement. The Superintendent may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
A. 
To the extent consistent with the applicable provisions of the Act and the Wisconsin Toxic and Pretreatment Effluent Standards, § 147.07, Wis. Stats., and regulations promulgated thereunder, the Wastewater Commission may grant individual variances beyond the limitations prescribed in §§ 11.10, 11.11, 11.12, 11.13, and 11.14 of this chapter whenever it is found, upon presentation of adequate proof, that compliance with the provisions of said sections result in an unnecessary hardship.
B. 
A variance may be allowed only upon written request for a variance submitted to the Wastewater Commission and subsequent public hearing and issuance of a variance by the Wastewater Commission. In granting or denying a variance, the Wastewater Commission shall file a written report setting forth the findings of fact based on the evidence presented.
C. 
The Wastewater Commission shall not vary the regulations of this chapter unless findings are made based on the evidence presented in each case that:
(1) 
Because of the particular physical characteristics of the property involved, a particular hardship to the owner would result as distinguished from a mere inconvenience if the strict letter of the regulations were to be carried out.
(2) 
The conditions upon which the variance is sought are unique to the property involved and are not applicable generally to other property.
(3) 
The variance shall not be granted solely on the basis of economic gain or loss.
(4) 
The variance shall not be granted unless it is shown that the variance will not be contrary to the public interest and will not be detrimental to the public welfare, health, and safety.
(5) 
The variance shall not be granted for a self-created hardship.
D. 
In granting a variance, the Wastewater Commission may impose such conditions, exceptions, time limitations, duration, and other limitations as the policies of this chapter, the applicable Wisconsin Statutes, and the Act may require.
E. 
Any variance granted by the Wastewater Commission shall not exceed five years and shall be granted upon the condition that the person who receives such variance shall make periodic progress reports as the Wastewater Commission shall specify. Such variance may be extended from year to year by the Wastewater Commission buy only if satisfactory progress has been shown.
F. 
If the limits of a variance are exceeded or if the person granted a variance violates any of the terms of a variance, a violation of this chapter is deemed to have occurred and the permit variance may be revoked on 30 days' notice.
A. 
Each industrial or other user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this chapter. Facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the owner or industrial or other user's cost and expense.
B. 
A notice shall be permanently posted on the industrial user's bulletin board or other prominent place advising employees whom to call in the event of a dangerous discharge. Employers shall insure that all employees who may cause such a dangerous discharge to occur or who may suffer from such a discharge are advised of the emergency notification procedure.
A. 
No person in the business of gathering and disposing of septic tank sludge or holding tank sewage shall transfer such waste into any disposal area or public sewer located within the City of South Milwaukee unless written approval for disposal has been first obtained from the Superintendent. Written application for this approval shall be made to the Superintendent and shall state the name and address of the applicant; number of its disposal units; and the make, model, and license number of each unit. Approval shall be non-transferable, except in the case of replacement of the disposal unit for which the Superintendent shall have designated a permit. The Superintendent may impose such conditions as deemed necessary on any approval granted. Any hauled waste approved by the Superintendent may only be disposed at points designated by the Superintendent.
B. 
No persons may discharge hauled leachate or contaminated groundwater to the City of South Milwaukee Treatment Facility unless a Permit for Discharge has first been obtained from the Wastewater Superintendent. Written application for this Permit shall be completed by the Generator of the leachate or groundwater on application forms provided by the City. Permit applications shall include all information described in the Hauled Leachate and Groundwater Policy. Permits shall be non-transferable. The Superintendent may impose such conditions as deemed necessary on any approval granted.
C. 
Any person or party disposing of septic tank sludge, holding tank sewage, leachate or contaminated groundwater, agrees to carry public liability insurance in an amount not less than $100,000 to protect any and all persons or property from injury and/or damage caused in any way or manner by an act, or the failure to act, by any of his employees. The person(s) shall furnish a certificate certifying such insurance will be in full force and effect.
D. 
All waste disposed of into the treatment system shall be of domestic or commercial origin, or compatible pollutants only, and an approved Hauler agrees that he will comply with the provisions of any and all applicable chapters of the City of South Milwaukee and shall not deposit or drain any gasoline, oil, acid, alkali, grease, rags, waste, volatile or inflammable liquids, or other deleterious substances into any manhole, nor allow any earth, sand, or other solid material to pass into any part of the wastewater collection and treatment facilities. No hauled waste of industrial origin shall be disposed into the sewer collection system or treatment system, including waste generated by the farming or dairy industry.
E. 
All wastes shall be only as the Superintendent determines will not harm the POTW or its workers, and shall be subject to all the limitations imposed upon industrial users of the system. The Superintendent may require a test to confirm compatibility. The amount of waste accepted shall not exceed that necessary to conduct this test, and no person allowed to deposit waste into the POTW shall have any right to deposit any waste in the system, other than such as may from time to time during this trial period, be specifically agreed to by the Superintendent in writing prior to the deposit.
F. 
The person(s) disposing waste agrees to indemnify and hold harmless the City from any and all liability and claims for damages arising out of or resulting from work and labor performed.
G. 
The superintendent may request sampling and analysis of hauled wastes. It will be the responsibility of the hauler to reimburse the City of South Milwaukee Treatment Facility for any monitoring and/or analytical costs.