Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 9 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER POLLUTION CONTROL › Article 3 - AQUIFER PROTECTION PERMITS - GENERAL PERMITS › Part E - TYPE 4 GENERAL PERMITS › Table 1 - Unit Design Flows

Current through Register Vol. 30, No. 28, July 12, 2024
Wastewater Source
(Add together all wastewater source line items
								applicable to the facility per applicable unit.)
Applicable Unit
Sewage Design Flow per
								Applicable Unit, Gallons Per Day
Airport
For each passenger (average daily number),
								add
For each employee, add
Passenger (average daily number)
4
Employee
15
Auto Wash
Facility
Per manufacturer, if consistent with this
								Chapter
Bar/Lounge
Seat
30
Barber Shop
Chair
35
Beauty Parlor
Chair
100
Bowling Alley (snack bar only)
Lane
75
Camp
Day camp, no cooking facilities
Campground, overnight, flush toilets
Campground, overnight, flush toilets and
								shower
Campground, luxury
Camp, youth, summer, or seasonal
Camping unit
Camping unit
Camping unit
Person Person
30
75
150
100-150
50
Church
Without kitchen
With kitchen
Person (maximum attendance)
Person (maximum attendance)
5
7
Country Club
Resident Member
Nonresident Member
100
10
Dance Hall
Patron
5
Dental Office
Chair
500
Dog Kennel
Animal, maximum occupancy
15
Dwelling
For determining design flow for sewage treatment
								facilities under
								R18-9-B202(A)(9)(a)
								and sewage collection systems under R18-9-E301(D) and R18-9-B301(K), excluding
								peaking factor.
Person
80
Dwelling
For on-site wastewater treatment facilities per
								R18-9-E302 through R18-9-E323:
Apartment Building
1 bedroom
Apartment
200
2 bedroom
Apartment
300
3 bedroom
Apartment
400
4 bedroom
Apartment
500
Seasonal or Summer Dwelling (with recorded seasonal
								occupancy restriction)
Resident
100
Single Family Dwellings (for both conventional and
								alternative systems)
see
								R18-9-A314(4)(a)
see
								R18-9-A314(4)(a)
Other than Single Family Dwelling, the greater flow
								value based on:
Bedroom count
300
1-2 bedrooms
Bedroom
150
Each bedroom over 2
Bedroom
25
Fixture count
Fixture unit
Fire Station
Employee
45
Hospital
All flows
Bed
250
Kitchen waste only
Bed
25
Laundry waste only
Bed
40
Hotel/motel (assuming outsourced linen laundry
								service)
Without kitchen
Bed (2 person)
50
With kitchen
Bed (2 person)
60
Industrial facility
Without showers
Employee
25
With showers
Employee
35
Cafeteria, add
Employee
5
Institutions
Resident
Person
75
Nursing home
Person
125
Rest home
Person
125
Laundry
Self service
Wash cycle
50
Commercial
Washing machine
Per manufacturer, if consistent with this
								Chapter
Office Building
Employee
20
Park (temporary use)
Picnic, with showers, flush toilets
Parking space
40
Picnic, with flush toilets only
Parking space
20
Recreational vehicle, no water or sewer
								connections
Vehicle space
Vehicle space
75 100
Recreational vehicle, with water and sewer
								connections
Space
250
Mobile home/Trailer
Restaurant/Cafeteria
For each employee, add
With toilet, add
Kitchen waste - full plated service, add
Kitchen waste - disposable service, add
Garbage disposal, add
Cocktail lounge, add
Employee
Customer
Meal
Meal
Meal
Customer
20
7
6
2
1
2
Restroom, public
Toilet
200
School
Staff and office
Person
20
Elementary, add
Student
15
Middle and High, add
Student
20
with gym & showers, add
Student
5
with cafeteria, add
Student
3
Boarding, total flow
Person
100
Service Station with toilets
First bay
1000
Each additional bay
500
Shopping Center, no food or laundry
Square foot of retail space
0.1
Store
For each employee, add
Employee
20
Public restroom, add
Square foot of retail space
0.1
Swimming Pool, Public
Person
10
Theater
Indoor
Seat
5
Drive-in
Car space
10
Note: Unit flow rates published in standard texts,
					 literature sources, or relevant area or regional studies are considered by the
					 Department, if appropriate to the project.