327 Ind. Admin. Code 3-6-11

Current through January 8, 2025
Section 327 IAC 3-6-11 - Design flow rate requirements for collection systems and water pollution treatment/control facilities

Authority: IC 13-13-5; IC 13-14-8; IC 13-14-9; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-2

Affected: IC 13-11-2; IC 13-15; IC 13-18

Sec. 11.

(a) The flow rate requirements for collection systems and water pollution treatment/control facilities shall be in accordance with this section. The calculated average and peak flow rate values for a collection system and its associated water pollution treatment/control facilities shall be at least equal to the average and peak daily flow rate of the existing influent plus the flow from the proposed additional service connections calculated as follows:
(1) The flow rate requirements for the average daily flow rate for residential service connections may be determined by using a general average daily flow rate value. The following method shall be used to calculate average and peak flow rate values:

ADF = (General Avg) × PRSC

PDF = ADF × PF

Where: ADF = Average daily flow rate expressed as gallons per residential service connection per day.

PDF = Peak daily flow rate expressed as gallons per residential service connection per day.

General Avg = General average daily flow rate value in accordance in the following:

200 gpd/unit for 1 bedroom apartment.

300 gpd/unit for 2 bedroom apartment.

310 gpd/unit for single-family homes.

PRSC = Proposed number of residential service connections.

PF = Peak daily factor of four (4).

(2) The flow rate requirements for the average and peak flow rate for service connections are described by Table 11-1 in subsection (b). The following method may be used to calculate the average and peak flow rate requirements:

ADF = FCF × PSC

PDF = ADF × PF

Where: ADF = Average daily flow rate expressed as gallons per service connection per day.

PDF = Peak daily flow rate expressed as gallons per service connection per day.

FCF = Flow calculation factors as contained in Table 11-1 in subsection (b).

PSC = Proposed number of service connections.

PF = Peak daily factor of four (4).

(3) If the average and peak daily flow cannot be determined or calculated using the methods described in subdivision (1) or (2), the determination of the average and peak daily flow shall be presented and approved pursuant to section 32 of this rule.
(b) The following flow calculation factors shall be used in the calculations under subsection(a)(2):

Table 11-1

Flow Calculation Factors (FCF)

Flow Calculation Factors (FCF)

Service Connection Description

FCF (gallons per day)

Agricultural labor camp

50 per occupant

Airport

3 per passenger plus 20 per employee

Assembly hall

3 per seat

Athletic field (baseball, soccer, football, etc.)

1 per participant and spectator with additions for concessions

Auction and flea market: with full kitchen

5 per customer

Auction and flea market: with warming kitchen

4 per customer

Auction and flea market: without kitchen

3 per customer

Automatic self-cleaning bathroom

20 per cycle (3 per day)

Banquet caterer

10 per person

Bar (without food)

10 per seat

Beauty salon: perm or color changes

35 per customer

Beauty salon: cut with wash

10 per customer

Beauty salon: cut without wash

5 per person

Bed and breakfast

150 per bedroom

Bowling alley (with bar and/or food)

125 per lane

Bowling alley (without food)

75 per lane

Bus station

3 per passenger

Campground (organizational) with flush toilets, showers, central kitchen

40 per camper

Campground (organizational) without flush toilets, privy use, central dining hall, no showers, handwashing

20 per camper

Campground (recreational) with individual sewer connection

100 per campsite

Campground (recreational) without individual sewer connection

50 per campsite

Church with full kitchen

5 per sanctuary seat

Church with warming kitchen

4 per sanctuary seat

Church without kitchen

3 per sanctuary seat

Condominium, multi-family dwelling: one bedroom

200 per unit

Condominium, multi-family dwelling: two bedroom

300 per unit

Condominium, multi-family dwelling: three bedroom

350 per unit

Condominium, one and two family dwelling

150 per bedroom

Conferences

10 per attendee

Correctional facilities

120 per inmate

Day care center

20 per person

Dentist

200 per chair plus 75 per employee

Doctor's office

75 per doctor, plus 75 per nurse, plus 20 per support staff

Factory with showers

35 per employee

Factory without showers

20 per employee

Fire station: manned

75 per firefighter

Fire station: unmanned

35 per firefighter

Food service operations: cocktail lounge or tavern

35 per seat

Food service operations: restaurant (not open 24 hours)

35 per seat

Food service operations: restaurant (open 24 hours)

50 per seat

Food service operations: restaurant (not open 24 hours but located along an interstate)

50 per seat

Food service operations: restaurant (open 24 hours and located along an interstate)

70 per seat

Food service operations: tavern

35 per seat

Food service operations: curb service (drive-in)

50 per car space

Golf comfort station

3 per 50% of maximum number of golfers

Golf main clubhouse

5 per golfer with additions for food service and showers

Hospital, medical facility

200 per bed

Hotel

100 per room

Kennels and vet clinics (sum of all of the following services at a facility):

1) a. cages;

5 per cage

b. inside runs;

10 per run

c. outside runs;

20 per run

d. grooming;

10 per animal

e. surgery; plus

50 per surgery room

2) staff

75 per veterinary doctor, plus 75 per veterinary assistant, plus 20 per

support staff

Mental health facility

100 per patient

Mobile home park

200 per lot

Motel

100 per room

Nursing home

100 per bed

Office building without showers

20 per employee

Office building with showers

35 per employee

Outpatient surgical center

50 per patient

Picnic area

5 per visitor

Race tracks

5 per attendee, 20 per staff

School: elementary

15 per pupil

School: secondary

25 per pupil

School with dormitory

100 per bed

Service station: convenience store/service center

1,000 with additions for food preparation and seating

Service station with only two (2) restrooms

400 per restroom

Service station with only unisex restroom

600 per restroom

Service station: automatic self-cleaning bathroom

60 per day

Shopping center

0.1 per square foot of floor space, plus 20 per employee

Swimming pool bathhouse

10 per swimmer

Theater: drive-in

5 per car space

Theater: inside building

5 per seat

327 IAC 3-6-11

Water Pollution Control Board; 327 IAC 3-6-11; filed May 17, 1999, 12:11 p.m.: 22 IR 3090; errata filed May 20, 1999, 6:36 p.m.: 22 IR 3108; readopted filed Apr 11, 2005, 2:45 p.m.: 28 IR 2470; readopted filed Jun 15, 2011, 11:15 a.m.: 20110713-IR-327110193BFA
Readopted filed Jun 29, 2017, 9:34 a.m.: 20170726-IR-327170225BFA
Readopted filed 5/12/2023, 1:07 p.m.: 20230607-IR-327230079BFA
Readopted filed 10/18/2024, 1:57 p.m.: 20241113-IR-327230810RFA