Evaluate the site location for the mound system to determine if site meets recommended soil and site criteria.
82
Proposed Mound System
Proposed Mound System
Lay out the distribution area, basal area, and overall footprint of the mound.
81
Prepare the Site
Prepare the Site
Mow the grass and remove the cuttings from the mound location. Dig a trench for the pressure pipe, which will bring the septic tank effluent into the center of the mound.
80
Trench
Trench
The trench should be adequately bedded and filled with granular backfill to reduce settling.
79
Sand
Sand
Bring in the sand to form the absorption area and cover the basel area.
78
Absorption Area
Absorption Area
Level off the sand surface in the absorption area.
77
Pipes
Pipes
Lay out the main, manifold, and laterals. Cement all tees and joints to prevent leaks and pressure losses.
75
Holes
Holes
Drill 1/4 inch diameter holes in the laterals. Slide a smaller diameter pipe back and forth inside the distribution pipe to knock off any pieces of plastic that may clog the system.
74
Gravel
Gravel
Cover the distribution system with clean, washed gravel.
73
Observation Port
Observation Port
Install an observation port to serve as a window into the mound to check for ponding of wastewater on the sand surface.
71
Valve Box
Valve Box
A valve box works well to house the turn-ups so they can easily be located and accessed for regular maintenance.
70
Fabric
Fabric
Cover the gravel with construction fabric before placing the insulating layer of soil on top of the mound.
