Loading...
§ 52.05 PROHIBITED DISCHARGES.
   (A)   No person(s) shall discharge or cause to be discharged any unpolluted water such as storm water, ground water, roof runoff, surface drainage or noncontact cooling water to any sanitary sewer.
   (B)   Storm water and all other unpolluted drainage shall be discharged to the 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.
   (C)   No person(s) shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
      (1)   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.
      (2)   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 one-half inch in any dimension, animal guts or tissues, 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 griding or polishing wastes.
      (3)   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.
      (4)   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.
   (D)   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/or soil, vegetation and ground water, or will not otherwise endanger lives, limb, public property or constitute a nuisance. The 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 Superintendent will give consideration to the 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 and/or SDS permit, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant and other pertinent factors. The limitations or restrictions on materials or characteristics of waste or wastewater discharged to the sanitary sewer which shall not be violated without approval of the Superintendent are as follows:
      (1)   Any wastewater having a temperature greater than 150° F., 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° 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 herein;
      (4)   Any garbage not properly shredded, as defined in § 52.01; (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)   Noncontact 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 wastewater containing 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 the half-life or concentration as may exceed limits established by the 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 in excess of the following limits for the materials:
         (a)   15.0 mg/l, aluminum;
         (b)   400.0 mg/l, ammonia;
         (c)   0.1 mg/l, arsenic;
         (d)   100.0 mg/l, borate;
         (e)   10.0 mg/l, cadmium;
         (f)   10.0 mg/l, chromium (total);
         (g)   1.0 mg/l, copper;
         (h)   5.0 mg/l, cyanide;
         (i)   0.1 mg/l, lead;
         (j)   5.0 mg/l, mercury;
         (k)   2.5 mg/l, nickel;
         (l)   10.0 mg/l, zinc; and
         (m)   200.0 mg/l, phenolic compounds.
      (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; and/or
      (12)   Any waters of wastes containing BOA5 or suspended solids of the 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 herein.
   (E)   (1)   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 § 52.05(D), and/or which in the judgement of the Superintendent, may have a deleterious effect upon the wastewater treatment facilities, processes or equipment, receiving waters and/or soil, vegetation and ground water, or which otherwise create a hazard to life or constitute a public nuisance, the city may:
         (a)   Reject the wastes;
         (b)   Require pretreatment to an acceptable condition for discharge to the public sewers, pursuant to Section 307(b) of the Act and all addendums thereof;
         (c)   Require control over the quantities and rates of discharge; and/or
         (d)   Require payment to cover the added costs of handling, treating and disposing of wastes not covered by existing taxes or sewer service charges.
      (2)   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 owners’ expense, and shall be subject to the review and approval of the city pursuant to the requirements of the MPCA.
   (F)   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 § 52.03, or contained in the national categorical pretreatment standards or any state requirements.
   (G)   (1)   The owner of any property serviced by a sanitary sewer shall provide protection from an accidental discharge of prohibited materials or other substances regulated by this chapter. Where necessary, facilities to prevent accidental discharges of prohibited materials shall be provided and maintained at the owner’s expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Superintendent for review and approval prior to construction of the facility.
      (2)   Review and approval of the plans and operating procedures shall not relieve any user from the responsibility to modify the user’s facility as necessary to meet the requirements of this chapter. Users shall notify the Superintendent immediately upon having a slug or accidental discharge of substances of wastewater in violation of this chapter to enable countermeasures to be taken to minimize damage to the wastewater treatment works.
      (3)   The notification will not relieve any user of any liability for any expense, loss or damage to the wastewater treatment system or treatment process, or for any fines imposed on the city on account thereof under any state and federal law. Employers shall insure that all employees who may cause or discover a discharge are advised of the emergency notification procedure.
   (H)   No person, having charge of any building or other premises which drains into the public sewer, shall permit any substance or matter which may form a deposit or obstruction to flow or pass into the public sewer.
   (I)   Whenever any service connection becomes clogged, obstructed, broken or out of order, detrimental to the use of the public sewer or unfit for the purpose of drainage, the owner shall repair or cause the work to be done as the Superintendent may direct. Each day after ten days that a person neglects or fails to so act shall constitute a separate violation of this section, and the Superintendent may then cause the work to be done, and recover from the owner or agent the expense thereof by an action in the name of the city.
(Ord. 10.04, passed 6-28-88; Am. Ord. 98-02, passed 2-10-98) Penalty, see § 10.99
Loading...