- (a) Trenches shall be parallel to the contours of the land.
- (b) All trenches shall be of equal length unless serial distribution is used.
- (c) The bottom of the trench shall not be more than 5 feet below final grade.
- (d) Unless serial distribution is used, the first length of all distribution lines leading from the distribution boxes to the trenches shall be laid with the same pitch.
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