Chapter 13.06
SEWER SYSTEM

Sections:

13.06.010    Intent – Short title.

13.06.020    Definitions.

13.06.030    Sewer connection required.

13.06.040    Private sewage disposal.

13.06.050    Building sewers and connection.

13.06.060    Use of the public sewers.

13.06.070    Floating vessels or structures.

13.06.080    Powers and authority of inspectors.

13.06.090    Failure to connect.

13.06.100    Violations, penalties and enforcement.

13.06.010 Intent – Short title.

For the protection of the health and welfare of the citizens of the city, this chapter implements the policy and goal of the city that all sewage and polluted waters generated within the city and the city’s urban growth area shall be ultimately discharged into, and treated by, the city’s sewage treatment plant. All new points of discharge of sewage and polluted waters in the city shall be connected to the city’s sewage treatment plant, and all existing points of discharge of sewage and polluted waters not connected to the city’s sewage treatment plant shall be terminated, and connected to the city’s sewage treatment plant at such times as is reasonably practicable. This chapter shall be known as the sewer code, and may be cited as such. (Ord. 1358 § 2, 2008: Ord. 829 § 4 (part), 1987).

13.06.020 Definitions.

Unless the context specifically indicates otherwise, the meaning of terms used in this chapter shall be as follows:

A. “BOD” (denoting biochemical oxygen demand) means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at twenty degrees Centigrade, expressed in milligrams per liter.

B. “Building drain” means that part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning five feet (1.5 meters) outside the inner face of the building wall.

C. “Building sewer” means the extension from the building drain to the public sewer or other place of disposal.

D. “City” means the city of Chelan unless otherwise specified.

E. “Combined sewer” means a sewer receiving both surface, groundwater and stormwater and sewage.

F. “Director” means the public works director of the city or his authorized employee, agent or representative.

G. “Garbage” means solid wastes from the domestic and commercial preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.

H. “Industrial wastes” means the liquid wastes from industrial manufacturing processes, trade or business as distinct from sanitary sewage.

I. “Natural outlet” means any outlet into a watercourse, pond, ditch, lake or other body of surface or groundwater.

J. “Person” means any individual, firm, company, association, society, corporation or group.

K. “pH” means the logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.

L. “Pollution” is defined as set forth in RCW 90.48.020, including all future amendments, which is adopted by reference in this chapter as if fully set forth.

M. “Properly shredded garbage” means the wastes from the preparation, cooking and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than one-half inch (1.27 centimeters) in any dimension.

N. “Public sewer” means a sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.

O. “Sanitary sewer” means a sewer which carries sewage and to which stormwaters, surfacewaters and groundwaters are not intentionally admitted.

P. “Sewage” means a combination of the water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such groundwaters, surfacewaters and stormwaters as may be present.

Q. “Sewage treatment plant” means any arrangement of devices and structures used for treating sewage.

R. “Sewage works” means all facilities for collecting, pumping, treating and disposing of sewage.

S. “Sewer” means a pipe or conduit for carrying sewage.

T. “Shall” is mandatory; “may” is permissive.

U. “Slug” means any discharge of water, sewage or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than fifteen minutes more than five times the average twenty-four-hour concentration or flows during normal operation.

V. “Storm drain” (sometimes termed “storm sewer”) means a sewer which carries stormwaters and surfacewaters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.

W. “Suspended solids” means solids that either float on the surface of, or are in suspension in water, sewage or other liquids, and which are removable by laboratory filtering.

X. “Watercourse” means a channel in which a flow of water occurs, either continuously or intermittently. (Ord. 829 § 4 (part), 1987).

13.06.030 Sewer connection required.

A. It is unlawful for any person to place, deposit or permit to be deposited in any unsanitary manner on public or private property within the city, or in any area under the jurisdiction of the city, any human or animal excrement, garbage or other objectionable waste.

B. It is unlawful to discharge to any natural outlet within the city, or in any area under the jurisdiction of the city, any sewage or other polluted waters, except where suitable treatment has been provided in accordance with subsequent provisions of this chapter.

C. Except as hereinafter provided, it is unlawful to construct or maintain any privy, privy vault, septic tank, cesspool or other facility intended or used for the disposal of sewage.

D. The owner of all houses, buildings or properties used for human occupancy, employment, recreation or other purposes, situated within the city and abutting on any street or private road in which there is now located or may in the future be located a public, sanitary or combined sewer of the city, is required at his expense to install suitable toilet facilities therein, and to connect such facilities directly with the proper public, sanitary or combined sewer in accordance with the provisions of this chapter, within ninety days after date of official notice to do so; provided, that said public sewer is:

1. Within two hundred feet of any part of the property and upon failure of an existing private on-site sewage system; or

2. When it is deemed necessary to protect public health as is certified by the local health officer pursuant to WAC 246-272-07001 as the same now exists or may be hereafter amended.

E. All connections, required by this chapter or voluntarily sought, to the public, sanitary or combined sewer shall be made in accordance with the city of Chelan general sewer plan (“plan”) as it now exists or may be hereafter amended, for the effective date of the ordinance codified in this subsection. All such connections shall be subject to review and approval for compliance with the plan and with this chapter by the public works director or his/her designee. (Ord. 1061 § 16, 1997; Ord. 1021 §§ 1, 2, 1995; Ord. 829 § 4 (part), 1987).

13.06.040 Private sewage disposal.

A. Where a public, sanitary or combined sewer is not available under the provisions of Section 13.06.030, the building sewer shall be connected to a private sewage disposal system complying with the provisions of this chapter.

B. Before commencement of construction of a private sewage disposal system the owner shall first obtain a written permit signed by the appropriate representative of the Chelan-Douglas County health district. The application for such permit shall be made on a form furnished by the Chelan-Douglas County health district, which the applicant shall supplement by any plans, specifications, and other information as are deemed necessary by the Chelan-Douglas County health district.

C. A permit for a private sewage disposal system shall not become effective until the installation is completed to the satisfaction of the Chelan-Douglas County health district pursuant to the Chelan-Douglas County health district rules and regulations, including all future amendments, which are adopted in this chapter by this reference as if fully set forth.

D. The type, capacities, location and layout of a private sewage disposal system shall comply with all recommendations of the Washington State board of health. No permit shall be issued for any private sewage disposal system employing subsurface soil absorption facilities where the area of the lot is less than the square footage requirements specified in Section 12 of the Chelan-Douglas health district rules and regulations as now exist and as hereafter may be amended. No septic tank or cesspool shall be permitted to discharge to any natural outlet.

E. Subject to the provisions of Section 13.06.030(D), when a public sewer becomes available the building sewer shall be connected to said sewer within ninety days after the date of official notice to do so and the private sewage disposal system shall be abandoned pursuant to WAC 246-272-18501 as the same now exists or may be hereafter amended. Soil which is required for fill shall be clean, bank-run gravel or dirt. Removal of the private sewage disposal system shall be at the expense of the owner.

F. The owner shall operate and maintain the private sewage disposal facilities in a sanitary manner at all times, at no expense to the city.

G. No statement contained in this chapter shall be construed to interfere with any additional requirements that may be imposed by the state or local health officer.

H. Repealed by Ord. 1021. (Ord. 1021 §§ 3, 4, 1995; Ord. 829 § 4 (part), 1987).

13.06.050 Building sewers and connection.

A. No unauthorized person shall uncover, make any connections with or opening into, use, alter or disturb any public sewer or appurtenance thereof without first obtaining a written permit from the director.

B. There shall be two classes of building sewer permits:

1. For residential and commercial service; and

2. For service to establishments producing industrial wastes.

In either case, the owner or his agent shall make application on a special form furnished by the city. The permit application shall be supplemented by any plans, specifications or other information considered pertinent in the judgment of the director.

C. All costs and expense incident to the installation and connection of the building sewer shall be borne by the owner. The owner shall indemnify and hold the city harmless from any loss or damage that may directly or indirectly be occasioned by the installation of the building sewer.

D. A separate and independent building sewer shall be provided for every building; except where one building stands at the rear of another on an interior lot and no private sewer is available or can be constructed to the rear building through an adjoining alley, court, yard or driveway, the building sewer from the front building may be extended to the rear building and the whole considered as one building sewer.

E. Old building sewers may be used in connection with new buildings only when they are found, on examination and test by the director, to meet all requirements of this chapter.

F. The size, slope, alignment, materials of construction of a building sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing and backfilling the trench shall all conform to the requirements of the Uniform Building and Plumbing Codes as adopted pursuant to Chapter 15.04 and the standards adopted pursuant to Title 25 of this code, as now exists or as may be hereafter amended.

G. Whenever possible, the building sewer shall be brought to the building at an elevation below the basement floor. In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such building drain shall be lifted by an approved means and discharged to the building sewer.

H. No person shall make connection of roof downspouts, exterior foundation drains, areaway drains or other sources of surface runoff or groundwater to a building sewer or building drain which in turn is connected directly or indirectly to a public sanitary sewer.

I. The connection of the building sewer into the public sewer shall conform to the requirements of the Uniform Building and Plumbing Codes as specified in Chapter 15.04 of this code and pursuant to the standards set forth in Title 25 of this code, as now exists or as may be hereafter amended. All such connections shall be made gastight and watertight. Any deviation from the prescribed procedures and materials must be approved by variance procedure prior to installation. The responsibility for repair, replacement and maintenance of the building sewer shall be the property owner’s.

J. The applicant for the building sewer permit shall notify the director when the building sewer is ready for inspection and connection to the public sewer. The connection shall be made under the supervision of the director or his representative.

K. All excavations for building sewer installations shall be completed pursuant to Chapter 12.20 of this code and pursuant to the standards set forth in Title 25 of this code, as now exists or as may be hereafter amended. All streets and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the city, subject to the standards set forth in Title 25 of this code, as now exists or as may be hereafter amended. (Ord. 1109 § 10, 1998; Ord. 1061 § 17, 1997; Ord. 829 § 4 (part), 1987).

13.06.060 Use of the public sewers.

A. No person shall discharge or cause to be discharged any stormwater, surfacewater, groundwater, roof runoff, subsurface drainage, polluted cooling water or unpolluted industrial process waters to any sanitary sewer.

B. Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewers or storm sewers, or to a natural outlet approved by the director. Industrial cooling water or unpolluted process waters may be discharged, on approval of the director to a storm sewer, combined sewer or natural outlet.

C. No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:

1. Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;

2. Any waters or waters containing toxic or poisonous solids, liquids or gases in sufficient quantity, either single 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 CN in the wastes as discharged to the public sewer;

3. 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;

4. Solid or viscous substances in quantities or of such 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, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, etc. either whole or ground by garbage grinders.

D. 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 director that such 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 opinion as to the acceptability of these wastes, the director will give consideration to such factors, including but not limited to, 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 and other pertinent factors. The substances prohibited are:

1. Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (sixty-five degrees Centigrade);

2. Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of one hundred mg/l or containing substances which may solidify or become viscous at temperatures between thirty-two degrees Fahrenheit and one hundred fifty degrees Fahrenheit (one and sixty-five degrees Centigrade);

3. 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 director;

4. Any waters or wastes containing strong acid iron pickling wastes or concentrated plating solutions whether neutralized or not;

5. Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement, to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the director for such materials;

6. Any waters or wastes containing phenols or other taste-or-odor-producing substances, in such concentrations exceeding limits which may be established by the director as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal or other public agencies having jurisdiction for such discharge to the receiving waters;

7. Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the director in compliance with applicable state or federal regulations;

8. Any waters or wastes having a pH in excess of 9.5;

9. Materials which exert or cause:

a. 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,

b. Excessive discoloration such as, but not limited to, dye wastes and vegetable tanning solutions,

c. Unusual BOD, chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works,

d. Unusual volume of flow or concentration of wastes constituting “slugs” as defined in this chapter;

10. 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 such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.

E. If any waters or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in subsection D of this section, and which in the judgment of the director, may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the director may:

1. Reject the wastes;

2. Require pretreatment to an acceptable condition for discharge to the public sewer;

3. Require control over the quantities and rates of discharge; and/or

4. Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of Chapter 13.08 of this code.

If the director permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the director, and subject to the requirements of all applicable codes, ordinances and laws.

F. Grease, oil and sand separators shall be provided when, in the opinion of the director, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand or other harmful ingredients; except that such separators shall not be required for private living quarters or dwelling units. All separators shall be of a type and capacity approved by the director, and shall be located as to be readily and easily accessible for cleaning and inspection.

G. Where preliminary treatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.

H. When required by the director, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessible and safely located, and shall be constructed in accordance with plans approved by the 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.

I. 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 the latest edition of “Standard Methods of the Examination of Water and Wastewater” published by the American Public Health Association, and shall be determined at the control manhole provided, or upon suitable samples taken at said control manhole. In the event that 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 building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property. The particular analyses involved will determine whether a twenty-four-hour composite of all outfalls of a premises is appropriate or whether a grab sample or samples should be taken. Normally, but not always BOD and suspended solids analyses are obtained from twenty-four-hour composites of all outfalls whereas pH’s are determined from periodic grab samples.

J. No statement contained in this article shall be construed as preventing any special agreement or arrangement between the city and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the city for treatment, subject to payment therefore, by the industrial concern provided that the following criteria are met:

1. The city has the physical capacity for treatment; and

2. The industrial waste is compatible with the biological treatment process as determined by the city. (Ord. 829 § 4 (part), 1987).

13.06.070 Floating vessels or structures.

Any vessel or other floating structure used for permanent residential or commercial purposes and moored within the city limits shall have a holding tank and be periodically pumped into Chelan sanitary sewer system. The owner of the moorage facility or property to which said vessel or floating structure is moored shall provide the proper pump and connection to said system. Alternatively, any vessel or other floating structure used for permanent residential or commercial purposes which have effective means aboard to treat sanitary drainage and eliminate all liquid effluent may be exempted from the requirement to discharge to a sanitary sewer, provided the treatment system on the vessel discharges no liquid overboard, and provided further, that any discharge to the atmosphere is odorless and complies fully with all limits set by local and state agencies. (Ord. 829 § 4 (part), 1987).

13.06.080 Powers and authority of inspectors.

A. The director and other duly authorized employees of the city bearing proper credentials and identification shall be permitted to enter all properties for the purposes of inspection, observation, measurement, sampling and testing in accordance with the provisions of this chapter. The director or his representative shall have no authority to inquire into any processes including metallurgical, chemical oil, refining, ceramic, paper or other industries beyond that point having a direct bearing on the kind and source of discharge to the sewers or waterways or facilities for waste treatment.

B. The director and other duly authorized employees of the city bearing proper credentials and identification shall be permitted to enter all private properties through which the city holds an easement for the purposes of, but not limited to, inspection, observation, measurement, sampling, repair and maintenance of any portion of the sewage works lying within said easement, shall be done in full accordance with the terms of the easement pertaining to the private property involved. (Ord. 829 § 4 (part), 1987).

13.06.090 Failure to connect.

If any sewer connection required in this chapter is not made within the time provided, the director is authorized and directed to cause the same to be made and file a statement of the cost thereof with the city clerk and thereon a warrant shall be issued by the city clerk against the sewer revenue fund for the payment of such cost. Such amount, together with a penalty of ten percent thereof, plus interest at the rate of ten percent per year upon the total amount of such cost and penalty, shall be assessed against the property upon which the building or structure is situated and shall become a lien thereon. Such total amount when collected shall be paid into said water and sewer revenue fund. (Ord. 829 § 4 (part), 1987).

13.06.100 Violations, penalties and enforcement.

Except as otherwise expressly provided, any violation of this chapter shall be enforced according to the uniform procedures set out in Chapter 2.80. (Ord. 1502 § 4 (Exh. G), 2015: Ord. 829 § 4 (part), 1987).