SECTION 252:641-9-2. Sizing

  Pump tanks shall be sized as follows:

(1)   Lift stations. The lift station pump tank shall have a minimum liquid storage capacity of one thousand (1,000) gallons.

(A)   Daily flow over 500 gallons. For systems with average daily flows over five hundred (500) gallons, the liquid capacity of the pump tank shall be at least twice the highest daily flow.

(B)   Daily flow over 2,000 gallons. For systems with an average daily flow over two thousand (2,000) gallons, the liquid capacity of the pump tank may be reduced to one-half (1/2) of the average daily flow, if a backup pump is available on site.

(2)   Flow equalization tanks. The flow equalization pump tank shall have a minimum liquid storage capacity of one thousand (1,000) gallons. If the daily flow is greater than five hundred (500) gallons, the liquid capacity of the pump tank shall be at least twice the highest daily flow.

(3)   Low pressure dosing tanks. The low pressure dosing pump tank shall be sized to have a minimum liquid capacity of at least one and one-half (1-1/2) times the average daily flow.

[Source: Added at 16 Ok Reg 1895, eff 6-11-99; Amended at 19 Ok Reg 1704, eff 6-13-02; Amended at 21 Ok Reg 1618, eff 6-11-04; Amended at 25 Ok Reg 2318, eff 7-11-08; Amended at 29 Ok Reg 1053, eff 7-1-12]