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13. The applicant for the building sewer permit shall notify the City when the
<br /> building sewer is ready for inspection and connection to the public sewer. The
<br /> connection and inspection shall be made under the supervision of the Public
<br /> Works Supervisor or authorized representative thereof.
<br /> 14. All excavations for building sewer installation shall be adequately guarded
<br /> with barricades and lights so as to protect the public from hazard. Streets,
<br /> sidewalks, parkways and other public property disturbed in the course of the
<br /> work, shall be restored in a manner satisfactory to the City.
<br /> Section 15-1.8. USE OF PUBLIC SERVICES
<br /> 1. No person(s) shall discharge or cause to be discharged any unpolluted
<br /> water such as storm water, groundwater, roof runoff, surface drainage, or non-
<br /> contact cooling water to any sanitary sewer.
<br /> 2. Storm water and all other unpolluted drainage shall be discharged to such
<br /> sewers as are specifically designed as storm sewers or to a natural outlet approved
<br /> by the City and other regulatory agencies. Industrial cooling water or unpolluted
<br /> process waters may be discharged to a storm sewer or natural outlet on approval
<br /> of the City and upon approval and the issuance of a discharge permit by the
<br /> MPCA.
<br /> 3. No person(s) shall discharge or cause to be discharged any of the
<br /> following described waters or wastes to any public sewers:
<br /> A. Any liquids, solids or gases which by reason of their nature or
<br /> quantity are or may be, sufficient either alone or by interaction
<br /> with other substances to cause fire or explosion or be injurious in
<br /> any other way to the wastewater disposal system or to the
<br /> operation of the system. Prohibited materials include, but are not
<br /> limited to: gasoline, kerosene, naphtha, benzene, toluene, xylene,
<br /> ethers, alcohols, ketones, aldehydes, peroxides, chlorates,
<br /> perchlorates, bromates, carbides, hydrides and sulfides.
<br /> B. Solid or viscous substances which will cause obstruction to the
<br /> flow in a sewer or other interference with the operation of the
<br /> wastewater treatment facilities such as, but not limited to, grease,
<br /> garbage with particles greater than one-half (1/2) inch in any
<br /> dimension, animal guts or tissues, paunch manure, bones, hair,
<br /> hides or fleshings, entrails, whole blood, feathers, ashes, cinders,
<br /> sand, spent lime, stone or marble dust, metal, glass, straw,
<br /> shavings, grass clippings, rags, spent grains, spent hops, waste
<br /> paper, wood, plastic asphalt residues, residues from refining or
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