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 city engineer may require on printed forms provided for that purpose.
The following table is established as a basis for computing average daily flow to the sanitary sewer:
Occupancy | Average Daily Flow |
|---|
A. Apartment | 200 gallons per dwelling unit |
B. Assembly areas | 5 gallons for each 7 square feet of floor area usable for seating occupancy |
C. Auditorium | 5 gallons for each 7 square feet of floor area usable for seating occupancy |
D. Bars and cocktail lounges | 20 gallons for each 15 square feet of floor area usable for seating occupancy |
E. Churches | 200 gallons per day per 1000 square feet of floor area usable for seating occupancy |
F. Hospitals | 500 gallons per bed |
G. Hotels | 200 gallons per room or apartment unit |
H. Industry, light (no water processes) | 200 gallons per 1000 square feet of floor area |
I. Laundry, automatic (public) | 75 gallons per machine |
J. Medical office | 300 gallons per 1000 square feet of floor area |
K. Motels | 200 gallons per unit |
L. Office and shops | 200 gallons per 1000 square feet of floor area |
M. Restaurant | 50 gallons for each 15 square feet of floor area usable for seating occupancy |
N. Schools 1. Elementary 2. Others | 9 gallons per capita 25 gallons per capita |
O. Stand (for sale of lunches, ice cream, beverages and similar items) | 300 gallons per 1000 square feet of floor area |
P. Storage garages and warehouses | 25 gallons per 1000 square feet of floor area |
Q. Stores, comm. and display | 100 gallons per 1000 square feet of floor area. |
All other occupancies shall be classified by the occupancy it most nearly resembles as determined by the city engineer or computed by the city engineer in accordance with the anticipated use.
The average daily flow to the sanitary sewer for a building containing mixed occupancies shall be determined by adding the peak flow characteristics of the various occupancies as set forth in the above table.
The average 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 peak flow.
In the event that an area of occupancy, in use prior to the effective date of the ordinance codified herein, is to undergo structural innovations and such innovations shall not increase the peak flow as it existed from the lot immediately prior to such date to the sanitary sewer, the owner shall submit to the city engineer an affidavit or statement pursuant to Section
2015.5 of the Code of Civil Procedure, in duplicate, verifying the actual occupancy load prior to such date.
(Prior code § 9-906; Ord. 990 § 2, 1971; Ord. 1058 § 2, 1973)