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 Oklahoma Administrative Code (Last Updated: March 11, 2021)
 TITLE 252. Department of Environmental Quality
 Chapter 641. Individual and Small Public On-Site Sewage Treatment Systems
 Subchapter 9. Pump tanks

  SECTION 252:641-9-3. Pump controls  

Latest version.
  •   The pump controls shall be set as follows:
    (1)   Lift stations. The following control settings apply to lift stations:
    (A)   Never more than 1/2 full. The pump controls shall be set so that the pump tank is never more than one-half (1/2) full.
    (B)   Alarm. There shall be an alarm set to activate and alert the owner/operator if the pump tank becomes more than one-half (1/2) full.
    (2)   Flow equalization tanks. The following control setting apply to flow equalization tanks:
    (A)   Never more than 1/2 full. The pump controls shall be set so that the pump tank is never more than one-half (1/2) full.
    (B)   Alarm. There shall be an alarm set to activate and alert the owner/operator if the pump tank becomes more than one-half (1/2) full.
    (C)   Regulating pumping rate. The pumping of wastewater to the treatment system shall be regulated by timers, float switches or by piping and valves that allow excess pumped effluent to be returned to the flow equalization tank. The pumping of wastewater to the treatment system shall not exceed:
    (i)   one-fourth (1/4) of the design capacity of the treatment system in a one-hour period; and
    (ii)   the daily treatment capacity of the treatment system in any given twenty-four-hour period.
    (3)   Low pressure dosing tanks. The following control settings apply to low pressure dosing tanks:
    (A)   Alarm. There shall be an alarm set to activate and alert the owner/operator if the reserve volume of the pump tank falls below one day's flow.
    (B)   Regulating pumping rate. The pumping of wastewater to the dispersal field shall be regulated by timers, float switches or by piping and valves that allow excess pumped effluent to be returned to the low pressure dosing pump tank. The pump controls shall be set so that the pumping of wastewater to the dispersal field shall:
    (i)   occur at least four (4) times per day; and
    (ii)   not exceed one-fourth (1/4) of the daily flow per dosing event.
[Source: Added at 16 Ok Reg 1895, eff 6-11-99; Amended at 21 Ok Reg 1618, eff 6-11-04; Amended and renumbered from 252:641-9-4 at 25 Ok Reg 2318, eff 7-11-08]