Nevada Administrative Code
Chapter 445A - Water Controls
ON-SITE SEWAGE DISPOSAL SYSTEMS
Operation and Monitoring of Systems
Section 445A.968 - Absorption bed
Current through December 12, 2024
1. If the use of an absorption trench is not practical, an absorption bed may be used in lieu of an absorption trench, if justified by the design engineer. The bottom of the absorption bed must serve as the primary absorptive medium.
2. An absorption bed used in an on-site sewage disposal system must meet the following design and construction criteria:
3. The invert of the piping for the drain field must not be less than 12 inches or more than 48 inches below the finished grade.
4. The aggregate covering the distribution pipe must be covered with untreated building paper, straw with a minimum thickness of 1 inch, geotextile fabric or a similar covering approved by the Division or other administrative authority.
5. The top of the absorption bed must be at least 6 inches below the surface of the natural soil.
6. A capping fill of soil must be placed on top of the absorption bed. The capping fill must:
7. If more than 500 linear feet of distribution pipe is used, dosing is required pursuant to NAC 445A.9664.
8. The owner or operator of an on-site sewage disposal system must take such precautions as are necessary to prevent compacting the bottom of the absorption bed. Any loose or smeared soil must be raked and removed. No vehicles may travel on the area of the absorption bed during excavation or after excavation is completed.
9. The following is a diagram of an absorption bed:
Added to NAC by Environmental Comm'n by R194-07, eff. 8-26-2008
NRS 445A.425