327 IAC 3-6-11 Design flow rate requirements for collection systems and water pollution treatment/control facilities

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) 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 10 per run b. inside runs; 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