Skip to code content (skip section selection)
Compare to:
Loading...
§ 51.080 DISCHARGES OF UNPOLLUTED WATER.
   (A)   No person shall discharge or caused to be discharged any water such as stormwater, ground water, roof runoff, surface drainage or non-contact cooling water to any sanitary sewer.
   (B)   Stormwater and all other unpolluted drainage shall be discharged to those sewers as are specifically designed as storm sewers or to a natural outlet approved by the city and other regulatory agencies. Industrial cooling water or unpolluted process waters may be discharged to a storm sewer or natural outlet on approval of the city and upon approval and the issuance of a discharge permit by the MPCA.
Penalty, see § 51.999
§ 51.081 DISCHARGES OF WATERS OR WASTES.
   No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
   (A)   Any liquids, 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 wastewater disposal system or to the operation of the system. Prohibited materials include but are not limited to gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides.
   (B)   Solid or viscous substances which will 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 ½-inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastic, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud or glass grinding or polishing wastes.
   (C)   Any wastewater having a pH of less than 5.0 or greater than 9.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the wastewater disposal system.
   (D)   Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to inhibit or disrupt any wastewater treatment process, constitute a hazard to humans or animals, or create a toxic effect in the receiving waters of the wastewater disposal system. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to Section 307(a) of the Act (33 USC 1317(a)).
Penalty, see § 51.999
§ 51.082 LIMITED DISCHARGES.
   (A)   The following described substances, materials, water or wastes shall be limited in discharges to municipal systems to concentrations or quantities which will not harm either sewers, the wastewater treatment works, treatment process or equipment, will not have an adverse effect on the receiving stream and soil, vegetation and ground water, or will not otherwise endanger lives, limb, public property, or constitute a nuisance. The Utilities Superintendent may set limitations lower than limitations established in the regulations below if, in his or her opinion, the more severe limitations are necessary to meet the above objectives. In forming his or her opinion as to the acceptability of wastes, the Utilities Superintendent will give consideration to factors as the quantity of subject waste in reaction to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, the city's NPDES/SDS permit, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and other pertinent factors.
   (B)   The limitations or restrictions on materials or characteristics of waste or wastewaters discharged to the sanitary sewer which shall not be violated without approval of the Utilities Superintendent are as follows:
      (1)   Any wastewater having a temperature greater than 150°F (65.6°C), or causing, individually or in combination with other wastewater, the influent at the wastewater treatment plant to have a temperature exceeding 104°F (40°C), or having heat in amounts which will inhibit biological activity in the wastewater treatment works resulting in interference therein.
      (2)   Any wastewater containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32°F and 150°F (0°C and 65.6°C); and any wastewater containing oil and grease concentrations of mineral origin of greater than 100 mg/l, whether emulsified or not.
      (3)   Any quantities of flow, concentrations, or both which constitute a “slug” as defined in § 51.001.
      (4)   Any garbage not properly shredded, as defined in § 51.001 of this chapter. Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments or similar places where garbage originates from the preparation of food on the premises or when served by caterers.
      (5)   Any noxious or malodorous liquids, gases or solids which either singly or by interaction with other wastes are capable of creating a public nuisance or hazard to life, or are sufficient to prevent entry into the sewers for their maintenance and repair.
      (6)   Any wastewater with objectionable color not removed in the treatment process such as but not limited to dye wastes and vegetable tanning solutions.
      (7)   Non-contact cooling water or unpolluted storm, drainage or ground water.
      (8)   Wastewater containing inert suspended-solids such as but not limited to fullers earth, lime slurries, and lime residues, or of dissolved solids such as but not limited to sodium chloride and sodium sulfate, in quantities that would cause disruption with the wastewater disposal system.
      (9)   Any radioactive wastes or isotopes of half-life or concentration as may exceed limits established by the Utilities Superintendent in compliance with applicable state or federal regulations.
      (10)   Any waters or wastes containing the following substances to the degree that any material received in the composite wastewater at the wastewater treatment works is detrimental to treatment process, adversely impacts land application, adversely effects receiving waters, or is in violation of standards pursuant to Section 307(b) of the Act (33 USC 1317(b)): Arsenic, Cadmium, Copper, Cyanide, Lead, Mercury, Nickel, Silver, total Chromium, Zinc and Phenolic compounds which cannot be removed by the city's wastewater treatment system.
      (11)   Any wastewater which creates conditions at or near the wastewater disposal system which violates any statute, rule, regulation or ordinance of any regulatory agency, or state or federal regulatory body.
      (12)   Any waters or wastes containing BOD5 or suspended solids of character and quantity that unusual attention or expense is required to handle the materials at the wastewater treatment works, except as may be permitted by specific written agreement subject to the provisions of § 51.094.
§ 51.083 DISCHARGES HAZARDOUS TO LIFE OR CONSTITUTE PUBLIC NUISANCES.
   (A)   If any waters or wastes are discharged or are proposed to be discharged to the public sewers which contain substances or possess the characteristics enumerated in § 51.082, or which in the judgement of the Utilities Superintendent may have a deleterious effect upon the wastewater treatment facilities, processes, or equipment, receiving waters or soil, vegetation, and ground water, or which otherwise create a hazard to life or constitute a public nuisance, the city may:
      (1)   Reject the wastes;
      (2)   Require pretreatment to an acceptable condition for discharge to the public sewers, pursuant to Section 307(b) of the Act (33 USC 1317(b)) and all amendments thereof;
      (3)   Require control over the quantities and rates of discharge; and
      (4)   Require payment to cover the added costs of handling, treating and disposing of wastes not covered by existing taxes or sewer service charges.
   (B)   If the city permits the pretreatment or equalization of waste flows, the design, installation and maintenance of the facilities and equipment shall be made at the owner's expense and shall be subject to the review and approval of the city pursuant to the requirements of the MPCA.
§ 51.084 INCREASING USE OF PROCESS WATER.
   No user shall increase the use of process water or, in any manner, attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in §§ 51.081 and 51.082, or contained in the National Categorical Pretreatment Standards or any state requirements.
Penalty, see § 51.999
§ 51.085 PRETREATMENT OR FLOW-EQUALIZING FACILITIES.
   Where pretreatment or flow-equalizing facilities are provided or required for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation at the expense of the owner.
§ 51.086 GREASE, OIL AND SAND INTERCEPTORS.
   Grease, oil, and sand interceptors shall be provided when, in the opinion of the Utilities Superintendent, they are necessary for the proper handling of liquid wastes containing floatable grease in excessive amounts, as specified in § 51.082(B)(2), any flammable wastes as specified in § 51.081(A), sand or other harmful ingredients; except that interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of the type to be readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors, the owner shall be responsible for the proper removal and disposal of the captured materials by appropriate means, and shall maintain a record of dates and means of disposal which are subject to review by the Utilities Superintendent. Any removal and hauling of the collecting materials not performed by the owner's personnel must be performed by a currently licensed waste disposal firm.
Penalty, see § 51.999
§ 51.087 INDUSTRIAL WASTES; INSTALLATIONS.
   Where required by the city, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable structure, or control manhole, with necessary meters and other appurtenances in the building sewer to facilitate observation, sampling, and measurement of wastes. The structure shall be accessible and safely located, and shall be constructed in accordance with plans approved by the city. The structure shall be installed by the owner at his or her expense and shall be maintained by the owner to be safe and accessible at all times.
Penalty, see § 51.999
Loading...