A. Stormwater And Surface Waters; Storm Sewers:
1. No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or process waters to any sanitary sewer.
2. Stormwater and all other unpolluted drainage shall be discharged to such storm sewers or to a natural outlet approved by the community development director or city engineer. Industrial cooling waters or unpolluted process waters may be discharged, upon approval of the community development director or city engineer, to a storm sewer or natural outlet.
B. Prohibited Discharges: Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sanitary sewer:
1. Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150°F);
2. Any waters or wastes which may contain more than one hundred (100) parts per million, by weight, of fat, oil, or grease;
3. Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas;
4. Any garbage that has not been properly shredded;
5. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, or any other solid or viscous substance capable of causing obstruction to the flow in sanitary sewers or other interference with the proper operation of the sanitary sewage works;
6. Any waters or wastes having a pH lower than 5.5 or higher than 9.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sanitary sewage works;
7. Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals or create any hazard in the receiving waters of the sanitary sewage treatment plant;
8. Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle, process, treat, or disinfect such materials at the sewage treatment plant;
9. Any noxious or malodorous gas or substance capable of creating a public nuisance;
10. Any salts of the heavy metals, in solution or suspension, in concentrations toxic to biological wastewater treatment processes, or adversely affecting sludge digestion or any other biochemical, biological, or other wastewater treatment process, or to the biota of the receiving stream to which the effluent of wastewater treatment facility discharges, or exceeding the following, the analytical results to be expressed in terms of the elements indicated:
Toxic Substances | mg/l |
Toxic Substances | mg/l |
Arsenic | 0.1 |
Barium | 1.0 |
Boron | 1.0 |
Cadmium | 0.2 |
Chromium (hexavalent) | 0.1 |
Chromium (total) | 2.0 |
Chromium (trivalent) | 1.0 |
Copper | 0.4 |
Lead | 0.1 |
Manganese | 1.0 |
Mercury | 0.01 |
Nickel | 1.0 |
Selenium | 0.05 |
Silver | 0.05 |
Zinc | 0.6 |
or other elements which will damage collection facilities, or are detrimental to the treatment processes, or are detrimental to the biota of the receiving stream to which the effluent of the wastewater treatment facility discharges;
11. Any cyanides or cyanogen compounds capable of liberating hydrocyanic gas or acidification in excess of 0.8 milligram per liter as CN in the wastes from any outlet into the public sanitary sewers;
12. Any radioactive materials exceeding the existing standards of the ODEQ, or unless they comply with the atomic energy commission act of 1954 (part 20, subpart D - waste disposal, subsection 20.303, of the regulations issued by the atomic energy commission, or amendments, thereto);
13. Any wastewaters containing phenols or other taste producing substances in such concentrations as to produce odor or taste in the effluent or to affect the taste and odor of the receiving waters; nor any phenols in excess of 0.1 milligram per liter.
C. Restricted Discharges:
1. Review And Approval Required: Admission into the public sewers of any waters or wastes: a) having a five (5) day biochemical oxygen demand greater than two hundred fifty (250) parts per million by weight; or b) containing more than two hundred fifty (250) parts per million by weight of suspended solids; or c) containing any quantity of substances having the characteristics described in subsection B of this section; or d) having an average daily flow greater than two percent (2%) of the average daily sewage flow of the city shall be subject to the review and approval of the director of community development and city engineer.
2. Preliminary Treatment:
a. Where necessary, in the opinion of the director of community development, the owner shall provide, at his or her expense, such preliminary treatment as may be necessary to: 1) reduce the biochemical oxygen demand to two hundred fifty (250) parts per million and the suspended solids to two hundred fifty (250) parts per million by weight; or 2) reduce objectionable characteristics or constituents to within the maximum limits provided in subsection B of this section; or 3) control the quantities and rates of discharge of such waters or wastes.
b. Plans, specifications and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the director of community development, the city engineer and the ODEQ, and no construction of such facilities shall be commenced until said approvals are obtained in writing.
c. Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and efficient operation by the owner at his or her expense. (2002 Code § 13.12.060; amd. 2013 Code)