8.7.3.5.Leaching Chamber

(1) Prior to backfilling, the leaching chamber shall be (a) installed level over the length of the absorption trench, (b) securely connected together, section to section, (c) free of structural damage, uncut and used full length, (d) equipped with end caps installed on both ends, (e) equipped with an integrated splash plate at the inlet end of each line of leaching chamber, to prevent soil scouring, and (f) protected in such a manner so as to prevent soil or leaching bed fill from entering the leaching chamber. (2) Except for a shallow buried trench, the distribution pipe within a leaching chamber shall be not less than 3 in. trade size for dosed systems. (3) Every pressurized distribution pipe within a leaching chamber shall (a) extend over the entire length of the leaching chamber, (b) be not less than 1½ in. trade size, (c) have orifices of at least 6 mm in diameter, spaced equally along the length of the pipe to provide even distribution of the effluent, (d) be supported, (e) be self-draining so as to prevent freezing of its contents, and (f) have cleanouts installed at the downstream end of each line of leaching chamber to allow for servicing of the system.