- (a) The slope of the pipe from the building to the septic tank shall be not less than 2% or 1/4 inch per foot, and not more than 15%.
- (b) The pipe shall be below ground surface for not less than 5 horizontal feet from the building to the septic tank inlet.
- (c) The slope of the pipe from the septic tank to the distribution box, or to the EDA if there is no distribution box, shall be not less than 1% or 1/8 inch per foot.
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