(a) It is unlawful for anyone to construct, reconstruct or repair any sewer lateral unless they are an authorized, licensed and bonded side sewer contractor in the State of Washington or an employee of the Director performing assigned duties.

(b) Each side sewer contractor performing work on a sewer lateral shall file with the County a certificate of insurance from an insurance company licensed to do business in the state that the contractor carries public liability and property damage insurance in amounts deemed adequate by the Director. Such policy shall contain an endorsement naming the County, its officers, elected officials, employees, and agents, as an additional insured and providing for not less than 10 days’ notice to the County of any change, cancellation, or expiration of such policy.

(c) An authorized side sewer contractor must secure their own permits, be responsible for all work accomplished under those permits and connect all plumbing outlets or facilities in a complete manner, as required by the Director.

(d) A property owner or their employee may construct, reconstruct, or repair a side sewer on their private property.

(a) Before a side sewer may be located on a building site other than the site being served by the side sewer, and before the Director issues a permit authorizing the laying of such a side sewer, the owner of the side sewer shall secure a written easement from the owner of the building site to be crossed. The Director may designate the manner and place that a side sewer may be connected to a sewer main. The easement shall be duly acknowledged and shall grant the right to occupy the property for side sewer or utility purposes. The easement shall be recorded in the office of the County Auditor, by the owner of the side sewer, and a copy of the recorded easement included with the side sewer permit application.

(b) Where a side sewer is to be connected in a public area to a side sewer which is owned by another and does not involve an easement, written permission for such connection shall be obtained from the owner of such side sewer and shall be filed with the Director before a permit authorizing such connection is issued.

(a) Materials and workmanship in connection with the installation of any side sewer or drain shall be gasketed, ASTM D3034 SDR 35 (i.e., Twinseal or comparable). No glue joints shall be allowed. Connection to the sewer main shall be by an approved tee, wye, or sanitary saddle.

(b) Six inches shall be the minimum diameter of pipe for gravity-flow sewer laterals except for single residential units, which shall be a minimum of four inches.

(c) Not more than one residence or commercial building shall be connected to a side sewer except by permission of the Director, and in accordance with rules and regulations of this chapter.

(d) Any one single-family dwelling shall be connected with not less than four-inch diameter pipe on private property; provided, that where a dual connection of two single-family dwellings, or a multiple dwelling or commercial building with a single-family dwelling, is permitted by the Director, such connection shall be made with not less than six-inch diameter pipe below the point of dual connection.

(e) Any multiple dwelling, industrial or commercial building shall be connected with not less than six-inch diameter pipe on private property.

(f) Side sewer lines shall be located a minimum of 10 feet horizontally from water mains and water service lines. Side sewer lines shall cross water lines below the water line with a minimum vertical separation of 18 inches between the invert of the water line and the crown of the sewer; otherwise, sewer line is to be sleeved.

(g) If the vertical or horizontal separation contained in subsection (5)(f) of this section cannot be maintained, construction shall be as follows: sewer shall be ductile iron (C151 or C104), HDPE (3408) or PVC (D3034) encased in concrete or in a one-quarter-inch thick continuous steel, ductile iron, or pressure-rated PVC pipe with all voids pressure-grouted with sand-cement grout or bentonite for a distance of at least 10 feet on each side of the center of the water main.

(h) Fittings, reducers, traps, etc., shall be of standard manufacture.

(i) Changes in line or grade shall be made with wyes or 45-degree bends, or for slight changes in line or grade, by setting each pipe out of line slightly, within the deflection angle allowed by the pipe manufacturer’s specifications, or by using 10-degree, 22-1/2-degree or 30-degree bends supplied by pipe manufacturers.

(j) When laying around a 90-degree corner, a wye and 45-degree bend combination shall be used with the end of the wye constructed as a cleanout.

(k) Cleanouts are required at:

(l) Reducers or wyes shall be used when changing the sizes of pipe. Pipe size may also be changed at a manhole.

(m) Grafts on four-inch, six-inch or eight-inch pipe shall not be allowed.

(n) A bend must not be used adjacent to a tee or wye at the main sewer but may be used at a length of pipe or more away from the main sewer unless the bend is manufactured as a part of the first length of pipe.

(o) Side sewer shall be laid on not less than two percent nor more than 100 percent grade; shall be not less than 30 inches from any foundation wall of any building, and if there is no foundation wall, not less than 30 inches from the outer lines of any footings, pilings or building supports. Side sewers shall have not less than 30 inches of cover at ditch lines, in paved areas, and at the property line, and 18 inches of cover on the private property. All cover measurements shall be based on the established grade, or on existing improvements, or shall be determined by the Director.

(p) If a side sewer is to be constructed at more than 100 percent grade, or with less than the required minimum cover prescribed in this chapter, the Director may require special plans for the construction to be submitted for his approval, and he may require the use of ductile iron pipe, HDPE, or other material before approving the plan of construction. The wall thickness of the pipe to be used, and whether it should be encased in concrete or concrete with reinforcing steel, shall be determined by the Director.

(q) All sewer pipes are to be bedded in pea gravel, sand, or pea gravel/sand mix two to four inches below and four to six inches above.

(r) Whenever it becomes necessary to disturb pavement in connection with any work authorized under this chapter, the opening shall be not less than three feet square; provided, the Director may specify a size of opening and additional cuts to be made when needed to insure a proper backfill. Such pavement disturbances are subject to the fees established in CCC 5.100.245.

(s) No excavation shall be made in any public area except at the times and in the manner prescribed by the Director.

(t) A trash pump is to be on site or immediately available if water is present in the ditch.

(u) No debris shall enter the public sewer at any time. Any such unauthorized use shall constitute a violation.

(v) All work is to be left exposed for inspection pursuant to CCC 13.04.090.

(w) Backfill of excavation and tunnels under concrete or asphalt roadway surfacing and the restoration of these surfaces in public areas shall be accomplished by the contractor as directed by the Director.

(x) Tunnels or excavations under public sidewalks or under driveways in public places may be backfilled by a side sewer contractor; provided, that the material has been approved by the Director, and provided it is tamped in place with a mechanical tamper, in layers of not more than eight inches loose thickness; except that within two feet of finish grade the loose thickness layers shall not exceed six inches. The density of all such compaction shall be approved by the Director.

(y) Traffic control shall be the responsibility of the side sewer contractor and subject to the approval of the Director.

(a) Diameter and materials of all pressurized lines;

(b) Pump manufacture, capacity, and rating;

(c) Size and location of pumping chamber or reservoir; and

(d) Any other information deemed necessary by the Director.