- (a) Gravity grease interceptors shall be inspected for accumulation of sludge and surface scum or grease at a frequency sufficient to allow the tank to be pumped by a licensed septage hauler when the combined thickness is equal to 25% or more of the tank depth or the sludge is at the level of the outlet tee.
- (b) Grease shall be removed from a gravity grease interceptor only by a licensed septage hauling vehicle.
Source. (See Revision Notes #1 and #2 at chapter heading for Env-Wq 1000) #11184, eff 10-1-16; ss by #14486, eff 2-1-26, EXPIRES: 2-1-36