Section 250-RICR-150-10-6.30 - Pump TanksA. An OWTS that requires a pump shall have a separate pump tank to house the pump, unless the pump is placed in the second (2nd) compartment of the septic tank within a screened vault approved by the Director. Pump tanks shall be located following a septic tank unless otherwise approved by the Director.B. Capacity - Pump tanks shall have an emergency storage capacity above the working level equal to the daily design flow of the system. Emergency capacity is not required if there is less than two inches (2") difference in elevation between the invert of the outlet of the septic tank and the invert of the inlet of the pump tank. All pump tanks shall be equipped with sensors and alarms to protect against high water due to failure of the pump or pump controls. The volume below the working level shall include an allowance for the volume of all drainage which may flow back to the tank when pumping has ceased. The volume of the pump tank between operating levels shall be adequate to assure the entire leachfield is dosed each cycle in accordance with the required number of cycles per day.C. Construction - Each pump tank shall: 1. Be watertight and meet the construction and material standards for septic tanks in § 6.27(C) of this Part; and2. Each pump tank or compartment thereof shall be provided with a minimum twenty inch (20") inside diameter access opening located so as to facilitate repair or adjustment of the pump. The access opening shall meet the requirements for septic tank access openings in §§ 6.27(H)(1) through (4) of this Part.D. Inlet and Outlet - The invert elevation of the inlet and the outlet pipe to the pump tank shall be located above the maximum water elevation in the pump tank, and above the seasonal high groundwater table, unless special construction, approved by the Director is provided.E. Ventilation - Pump tanks shall be constructed in a manner that will permit venting through the building sewer or other suitable outlet.F. Installation - Pump tank installation shall be as required for septic tanks in § 6.27(J) of this Part.G. Performance Testing - Pump tanks shall be certified watertight in accordance with § 6.27(L) of this Part.H. Existing Pump Tanks - Pump tanks in place as of January 1, 2008 that have access openings to finished grade shall be in compliance with § 6.27(H)(2) of this Part no later than January 1, 2013.250 R.I. Code R. 250-RICR-150-10-6.30
Amended effective 11/25/2018
Amended effective 12/28/2021
Amended effective 7/1/2022