Section 410IAC6-8.3-85. Elevated sand mound on-site sewage systems: installation of the effluent force main

   (a) To minimize disturbance of the basal area, the effluent force main must be brought above grade prior to entering the basal area and it must be extended upward through the INDOT Specification 23 sand to the point where it will enter the aggregate bed. The effluent force main shall be laid in the aggregate bed to the point of connection to the manifold.

  (b) If the effluent force main is installed prior to tilling the elevated sand mound site, the following apply:

(1) The effluent force main must be installed a minimum of sixteen (16) inches below existing grade from the outlet of the dosing tank to the point where it comes up through the INDOT Specification 23 sand, outside of the basal area.

(2) The end of the effluent force main shall be fitted with a temporary vertical pipe extending at least three (3) feet above grade and temporarily capped during the construction process.

(3) The portion of the effluent force main which comes above existing grade must be bedded and stabilized properly as the sand is applied.

  (c) If the effluent force main is installed after tilling of the site and placement of the INDOT Specification 23 sand, the following apply:

(1) The excavation must be hand dug through the INDOT Specification 23 sand.

(2) Dirt, sand, and debris must be prevented from entering the effluent force main during installation.

(3) The portion of the effluent force main that is installed in the INDOT Specification 23 sand must be properly bedded and stabilized.

(Indiana State Department of Health; 410 IAC 6-8.3-85; filed Oct 19, 2012, 2:06 p.m.: 20121114-IR-410120156FRA)