Nev. Admin. Code § 444.8378 - Stepped network of trenches utilizing relief lines: Design criteria
1. The size of the required absorption area
for a stepped network of trenches utilizing relief lines must be calculated
based on percolation testing and must conform to the requirements for the
sizing of a standard trench. Percolation testing must be conducted at the
location of each stepped trench and the size of the required absorption area
must be calculated based on the slowest percolation rate.
2. The invert of the overflow section must be
located not less than 1 inch or more than 2 inches above the top of the
disposal trench distribution line. The leaching aggregate must extend at least
4 inches above the disposal distribution line, as shown in subsection
5.
3. To minimize the possibility
that the slope will fail or that effluent will surface down slope, the design
of the disposal field must comply with the slope requirements set forth in NAC
444.794.
4. Trenches for a stepped
network of trenches utilizing relief lines must be spaced at least 10 feet
apart.
5. The following is a
diagram of a stepped network of trenches utilizing relief lines:
Click here to view image.
Click here to view image.
Notes
NRS 439.200, 444.650
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.