Except as provided in this chapter, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:
A. 
Any liquid or vapor having temperature higher than 100 degrees Fahrenheit;
B. 
Any water, or wastes which may contain more than 100 parts per million, by weight, of fat, oil, or grease;
C. 
Any gasoline, benzene, naphtha, fuel oil, lube oil, or other flammable or explosive liquid, solid or gas;
D. 
Any garbage that has not been properly shredded;
E. 
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 sewers or other interference with the proper operation of the sewage works;
F. 
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 city;
G. 
Any waters or wastes containing toxins or poisonous substances 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 sewage treatment plant;
H. 
Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant;
I. 
Any noxious or malodorous gas or substance capable of creating a public nuisance.
(Ord. 627 § 1, 1989)
Grease, oil and sand interceptors shall be provided on all restaurants and such other commercial or industrial establishments when, in the opinion of the utilities director, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand and other harmful ingredients. Such interceptors shall be of a type and capacity approved by the utilities director and shall be so located as to be readily and easily acceptable for cleaning and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight and equipped with easily removed covers, which when bolted in place shall be gastight and watertight. All costs associated with design, installation and maintenance to insure a working, reliable grease trap system shall be borne solely by the sewer customer.
(Ord. 627 § 1, 1989; Ord. 1187 § 11, 2017)
Where installed, all grease, oil and sand interceptors shall be maintained by the sewer customer owner, at his/her sole expense, for continuously efficient operation at all times at a minimum of once every 12 months or more often as needed to avoid visible grease buildup within the system at their site. If the grease interceptor is near overflowing, the director or his or her designee may mandate that cleaning be accomplished in a more immediate time frame and/or at more frequent intervals. If the director or his/her designee or other city personnel cannot locate the sewer customer in a timely manner, city utility personnel may take such actions as they deem reasonably necessary to prevent an overflow of grease or other solids, up to and including the removal of grease via commercial means or services, the costs of which shall be borne solely by the sewer customer.
(Ord. 627 § 1, 1989; Ord. 1187 § 12, 2017)
A. 
The admission into the public sewer of any waters or wastes having the qualities set forth in this subsection shall be subject to review and approval by utilities director:
1. 
A five-day BOD greater than 300 parts per million weight; or
2. 
Containing more than 350 parts per gallon by weight of suspended solids; or
3. 
Containing any quantity of substances having the characteristics described in SMC § 13.04.430; or
4. 
Having an average daily flow greater than two percent of the average daily sewage flow of the district.
B. 
Where necessary, in the opinion of the utilities director, the owner shall provide, at his expense, such preliminary treatment as may be necessary to:
1. 
Reduce BOD to 300 parts per million by weight, and the suspended solids to 350 parts per million by weight; or
2. 
Reduce objectionable characteristics or constituents to within the maximum limits provided for in SMC § 13.04.430; or
3. 
Control the quantities and rates of discharge of such waters or wastes.
C. 
Plans, specifications and other pertinent information relating to proposed preliminary treatment facilities shall be submitted to the approval of the utilities director and of the Pollution Control Commission of the state when required by law, and no construction of such facilities shall be commenced until such approvals are obtained in writing. Any expenses incurred by the city in reviewing such plans, specifications and information shall be paid by the property owner or his representative before the utilities director's approval shall be issued.
(Ord. 627 § 1, 1989)
Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation and by the owner at his expense.
(Ord. 627 § 1, 1989)
When required by the utilities director, the owner of any property served by a side sewer carrying industrial wastes shall install a suitable control manhole in the side sewer to facilitate observation, sampling and measurement for the wastes. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans approved by the utilities director. The manhole shall be installed by the owner, at his expense, and shall be maintained by him so as to be safe and accessible at all times.
(Ord. 627 § 1, 1989)
All measurements, tests and analysis of the characteristics of waters and wastes to which reference is made in SMC § 13.04.430 and § 13.04.460 shall be determined in accordance with standard methods for the examination of water sewage, and shall be determined at the control manhole provided for in SMC § 13.04.480, or upon suitable samples taken at such control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream in the public sewer to the point at which the side sewer is connected.
(Ord. 627 § 1, 1989)
Nothing in this chapter shall be construed as preventing any special agreement or arrangement between the city and the manufacturing of any industrial wastes whereby industrial wastes of unusual strength or character may be accepted by the city for treatment, subject to payment therefor by that manufacturer.
(Ord. 627 § 1, 1989)