Yolo County Municipal Code Art. 3 Public Sewers: Use

It shall be unlawful for any person to place, deposit, or permit to be deposited, in an insanitary manner upon public or private property within the District or in any area under the jurisdiction of the District, any human or animal excrement, garbage, or other objectionable wastes. (§ 201, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

(a) Required. It shall be unlawful to discharge into any natural outlet within the District or in any area under the jurisdiction of the District any sanitary sewage, industrial wastes, or other polluted waters except where suitable treatment has been provided in accordance with the provisions of this article. The admission into the public sewers of any waters or wastes with the following qualities shall be subject to review and approval by the Engineer:

(1) Having a five (5) day biochemical oxygen demand greater than 300 parts per million by weight;

(2) Containing more than 350 parts per million by weight of suspended solids;

(3) Containing any quantity of substances having the characteristics set forth in Section 6-5.305 of this article; or

(4) Having an average daily flow greater than two (2%) percent of the average daily sewage flow of the system.

(b) Construction. Where necessary in the opinion of the Engineer, the owner shall provide, at his expense, such preliminary treatment as may be necessary to:

(1) Reduce the biochemical oxygen demand to 300 parts per million and the suspended solids to 350 parts per million by weight;

(2) Reduce objectionable characteristics or constituents to within the maximum limits provided for in Section 6-5.305 of this article; or

(3) Control the quantities and rates of discharge of such waters or wastes.

Plans, specifications, and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the Engineer, and no construction of such facilities shall be commenced until such approval is obtained in writing.

(c) Maintenance. Where preliminary treatment facilities are provided for any waters or wastes, such facilities shall be maintained continuously in satisfactory and effective operation by the owner at his expense. (§§ 202, 505, and 507, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

The owner of all houses, buildings, or properties used for human occupancy, employment, recreation, or other purposes, situated within the District and abutting on any street, alley, or right-of-way in which there is located a public sanitary or combined sewer of the District, is hereby required at his expense to install suitable toilet facilities therein and to connect such facilities directly with the proper public sewer in accordance with the provisions of this chapter within ninety (90) days after the date of official notice to do so by the Division of Environmental Health provided such public sewer is within 200 feet of the property line. (§ 203, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

Except as otherwise provided in this article, no person shall discharge, or cause to be discharged, any of the following waters or wastes to any public sewer:

(a) Any liquid or vapor having a temperature higher than 100 degrees Fahrenheit;

(b) Any water or waste which may contain more than 200 parts per million, by weight, of fat, oil, or grease;

(c) Any gasoline, benzene, naptha, fuel oil, or other flammable or explosive liquid, solid, or gas;

(d) Any garbage which has not been properly shredded and contains any particle greater than one-half (1/2”) inch in any dimension;

(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 five and five-tenths (5.5) or higher than nine and five-tenths (9.5), or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the sewage works;

(g) 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 sewage treatment plant;

(h) Any waters containing radioactive wastes of 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;

(i) Any waters containing synthetic detergents in sufficient quantity to injure or interfere with any sewage treatment process or create problems in the receiving waters of the sewage treatment plant;

(j) 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;

(k) Any noxious or malodorous gas or substance capable of creating a public nuisance; and

(l) Industrial wastes, waters, or liquids which are odorless, stable, and free from deleterious chemicals shall, where practicable, be discharged into storm drains or storm water channels. For the purposes of this subsection, any industrial wastes, waters, or liquids containing sufficient oxygen to prevent putreficaction when incubated for a period of five (5) days at a temperature of twenty-five (25) degrees centigrade shall be deemed stable. (§ 502, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

(a) Required. Grease, oil, and sand interceptors shall be provided when, in the opinion of the Engineer, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts or any flammable wastes, sand, or other harmful ingredients; provided, however, such interceptors shall not be required for private living quarters or dwelling units.

(b) Type, capacity, and location. All interceptors shall be of a type and capacity approved by the Engineer and shall be located so as to be readily and easily accessible for cleaning and inspection.

(c) Construction. 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 removable covers which, when bolted in place, shall be gastight and watertight.

(d) Maintenance. Where installed, all grease, oil, and sand interceptors shall be maintained by the owner at his expense in continuously efficient operation at all times. (§§ 503 and 504, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

When required by the Engineer, the owner of any property served by a building sewer carrying industrial wastes shall install a suitable control manhole in the building sewer to facilitate observation, sampling, and measurement of the wastes. Such manhole cover, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Engineer. The manhole shall be installed and maintained by the owner at his expense. (§ 508, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

When required by the Engineer, the owner of any property served by a building sewer carrying industrial wastes with a volume greater than two (2%) percent of the system flow shall install and maintain an approved flow recording device for continuous measurement of the volume of waste discharged to the public sewer. The flow measuring station and the records obtained therefrom shall be accessible at all times to the Engineer. Copies of the flow measurements shall be furnished the Engineer. (§ 509, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

All measurements, tests, and analyses of the characteristics of waters and wastes to which reference is made in this chapter shall be determined in accordance with "Standard Methods for the Examination of Water and Sewage", published by the American Public Health Association, and shall be determined at the control manhole provided for in Section 6-5.307 of this article or upon suitable samples taken at such control manhole. In the event no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the house connection sewer is connected. (§ 510, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

The provisions of this chapter shall not be construed as preventing any special agreement or arrangement between a District and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the district for treatment, subject to payment therefor by the industrial concern. (§ 511, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

Outside users may be permitted to connect to a District's sewer only when the Engineer finds that such connection will not be adverse to the District's interests and that sufficient capacity is available in the sewage works. Rules and regulations of the district shall be applicable to outside users, and service charges, as established by the District for outside users, shall be applicable. In the event it shall develop, by reason of increased flow, changes in the character of discharge, or changes of any cause whatsoever, that the flow becomes adverse to the District's interests or that capacity in the sewage works is no longer available for outside users, such users may be disconnected ninety (90) days after notice is given in writing that service is to be terminated. (§ 512, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)

A sewer service charge, if adopted by a District, shall be applicable to wastes permitted to be discharged to the public sewer system. (§ 506, Ord. 497; as amended by § 2, Ord. 1470, eff. July 14, 2016)