(A) Capacity. The Director of Public Services/ City Engineer shall determine what capacity is necessary in each public sewer to provide for the proper collection of sewage in the city. In the event a lot in the city is to undergo development or redevelopment, and the anticipated sewage from the proposed use is found by the Director of Public Services/City Engineer to exceed the capacity available in the public sewer, the building permit for such development or redevelopment shall not be issued until such time as capacity in the public sewer is available or can be made available before the building is occupied.
(B) Determination of capacity. The size and grade of each public sewer must be such as to provide at all times sufficient capacity for peak flow rates of discharge. In order to establish estimates of sanitary sewage at peak flow, the owner shall submit building plans and such other information as the Director of Public Services/City Engineer may require on printed forms provided for that purpose.
(C) The following table is established as a basis for computing average daily flow to the sanitary sewer:
User Category
| Average Daily Flow |
User Category
| Average Daily Flow |
Residential | |
Single family home | 260 gallons/dwelling unit |
Two units or more | 200 gallons/dwelling unit |
Commercial | |
Hotel; Motel | 100 gallons/room |
Rooming house | 100 gallons/room |
Store | 100 gallons/1,000 sq. feet |
Supermarket | 100 gallons/1,000 sq. feet |
Shopping center | 100 gallons/1,000 sq. feet |
Office building | 200 gallons/1,000 sq. feet |
Professional building | 300 gallons/1,000 sq. feet |
Restaurant | 1,000 gallons/1,000 sq. feet |
Financial institution | 100 gallons/1,000 sq. feet |
Service shop | 100 gallons/1,000 sq. feet |
Laundromat | 4,600 gallons/1,000 sq. feet |
Service Station | 100 gallons/1,000 sq. feet |
Auto sale; Auto repair | 100 gallons/1,000 sq. feet |
Wholesale outlet | 100 gallons/1,000 sq. feet |
Animal kennel | 100 gallons/1,000 sq. feet |
Nursery; Greenhouse | 25 gallons/1,000 sq. feet |
Dry manufacturing | 25 gallons/1,000 sq. feet |
Lumber yard | 25 gallons/1,000 sq. feet |
Warehousing | 25 gallons/1,000 sq. feet |
Open storage | 25 gallons/1,000 sq. feet |
Indoor theater | 500 gallons/1,000 sq. feet |
Drive-in theater | 20 gallons/1,000 sq. feet |
Night club | 750 gallons/1,000 sq. feet |
Bowling; Skating | 1,000 gallons/1,000 sq. feet |
Club | 20 gallons/1,000 sq. feet |
Auditorium, Amusement | 350 gallons/1,000 sq. feet |
Golf courses, (structures and improvements) | 100 gallons/1,000 sq. feet |
Home for the aged; Convalescent hospital | 90 gallons/bed |
Mortuary; Cemetery | 100 gallons/1,000 sq. feet |
Institutional | |
Colleges, Universities | 20 gallons/student |
Private schools | 200 gallons/1,000 sq. feet |
Churches | 50 gallons/1,000 sq. feet |
(D) All others shall be classified by the occupancy it most nearly resembles as determined by the Director of Public Services/City Engineer in accordance with the anticipated use.
(E) The daily flow to the sanitary sewer for a building containing mixed occupancies shall be determined by adding the average daily flow characteristics of the various occupancies as set forth in the above table.
(F) The daily flow from a room or building which is used for different occupancies at different times shall be determined by the occupancy which gives the largest average daily flow.
('86 Code, § 16.29.060) (Ord. 3890, passed - - )