(1) “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.

(2) “Building sewer” or “side sewer” means the extension from the building drain beginning two feet from the foundation wall of the building or structure, extending to the public sewer, and including the connection to the public sewer.

(3) “City” means the City of Port Angeles.

(4) “Commercial unit” means any establishment or place of business not a single-family or duplex residential unit or an industrial unit. Any structure containing three or more residential units shall be considered a commercial unit.

(5) “County” means Clallam County.

(6) “Department” means the Public Works Department of Clallam County.

(7) “Director” means the Director of Public Works of Clallam County or his/her authorized deputy, agent, or representative.

(8) “Equivalent water meter” means a water service connection to a residential unit, commercial use, or industrial use, consisting of a three-fourths-inch or one-inch diameter service line with a five-eighths-inch meter.

(9) “EUGA Sewer System” means that portion of the City of Port Angeles sanitary sewer, including all present and future public interceptors, pump stations, trunk lines, collector sewers, appurtenances, easements and rights-of-way, located in the Urban Growth Area of the City and east of the City limits.

(10) “PAMC” means City of Port Angeles Municipal Code.

(11) “Public sewer” means any portion of the sewers of the City, which is owned and accepted for maintenance by the City and which collects and transmits sewage from more than one separate building connection to the City’s Wastewater Treatment Plant, including lateral sewers, trunk sewers, and force mains, and excluding sewer connections from buildings thereto.

(12) “Residential unit” means any structure, including a mobile home, manufactured home, or modular unit, which is designed for single-family or duplex occupancy and has one or more sinks and/or showers, and/or bathing facilities, and/or laundry facilities, and/or toilets, and shall not include garages or sheds not having any of the above appurtenances.

(13) “Sanitary sewer” means a sewer which carries sewage and to which storm, surface and ground waters are not intentionally admitted.

(14) “Sewage” means water-carried human wastes or a combination of water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such ground, surface, storm or other waters as may be present.

(15) “Sewer service rates” means the monthly or annual charges imposed by the City for the use of the public sewers.

(16) “Shall” means mandatory; “may” means permissive.

(17) “Storm drain” or “storm sewer” means a pipe which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.

(18) “Urban Growth Area” means the Urban Growth Area established by the County pursuant to the Growth Management Act, Chapter 36.70A RCW, for the City of Port Angeles.