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The applicant for the building sewer permit shall notify the Inspector when the building sewer is ready for inspection and connection to the public sewer. The connection shall be made under the supervision of the Inspector or his or her representative.
(Ord. 304, passed 4-7-1975)
All excavations for building sewer installation shall be adequately guarded with barricades and lights so as to protect the public from hazard. Streets, sidewalks, parkways and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the city.
(Ord. 304, passed 4-7-1975)
USE OF PUBLIC SEWERS
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer.
(Ord. 304, passed 4-7-1975) Penalty, see § 51.999
Stormwater and all other unpolluted drainage shall be discharged to the sewers as are specifically designated as combined sewers or storm sewers, or to a natural outlet approved by the Inspector. Industrial cooling water or unpolluted process waters may be discharged, on approval of the Inspector, to a storm sewer, combined sewer or natural outlet.
(Ord. 304, passed 4-7-1975)
No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
(A) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;
(B) Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance or create any hazard in the receiving waters of the sewage treatment plant, including but not limited to cyanides in excess of two mg/l as CH in the wastes as discharged to the public sewer;
(C) Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works; and
(D) Solid or viscous substances in quantities or of the size capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, un-ground garbage, whole blood, paunch manure, hair and fleshing, entrails and paper dishes, cups, milk containers and the like, either whole or ground by garbage grinders.
(Ord. 304, passed 4-7-1975) Penalty, see § 51.999
No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes if it appears likely in the opinion of the Inspector that the wastes can harm either the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his or her opinion as to the acceptability of these wastes, the Inspector will give consideration to the factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treat-ability of wastes in the sewage treatment plant and other pertinent factors. The substances prohibited are:
(A) Any liquid or vapor having a temperature higher than 150°F (65°C);
(B) Any water or waste 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);
(C) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Inspector;
(D) Any waters or wastes containing strong acid iron pickling wastes or concentrated plating solutions, whether neutralized or not;
(E) Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement, to the degree that any material received in the composite sewage at the sewage treatment works exceeds the limits established by the Inspector for the materials;
(F) Any waters or wastes containing phenols or other taste or odor-producing substances, in the concentrations exceeding limits which may be established by the Inspector as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal or other public agencies of jurisdiction for the discharge to the receiving waters;
(G) Any radioactive wastes or isotopes of the half-life or concentration as may exceed limits established by the Inspector in compliance with the applicable state or federal regulations;
(H) Any waters or wastes having a pH in excess of (9.5);
(I) Materials which exert or cause:
(1) Unusual concentrations of 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);
(2) Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions);
(3) Unusual BOD, chemical oxygen demand or chlorine requirements in the quantities as to constitute a significant load on the sewage treatment works; and
(4) Unusual volume of flow or concentration of wastes constituting “slugs” as defined herein.
(J) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to the degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(Ord. 304, passed 4-7-1975) Penalty, see § 51.999
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