Section 200. Horizontal setback requirements

Part IV. Horizontal Setback Requirements

AOSSs designed pursuant to § 32.1-163.6 of the Code of Virginia are subject to the following horizontal setbacks that are necessary to protect public health and the environment:

1. The horizontal setback distances as found in 12VAC5-610 that apply to public and private drinking water sources of all types, including wells, springs, reservoirs, and other surface water sources, except that in cases where an existing sewage system is closer to a private drinking water source, the AOSS shall be no closer to the drinking water source than the existing sewage system;

2. The horizontal setback distances that apply to shellfish waters as found in 12VAC5-610;

3. The horizontal setback distances that apply to sink holes as found in 12VAC5-610;

4. A five foot horizontal separation to a wetland that is subject to permitting by the Virginia Department of Environmental Quality pursuant to the requirements of Title 62.1 of the Code of Virginia; and

5. Unless the AOSS complies with the ground water protection requirements of 12VAC5-613-90.C, a horizontal separation between the soil treatment area and any drainage trench or excavation that comes within six inches vertically of ground water shall be as follows:

a. AOSSs utilizing septic tank effluent shall be subject to a horizontal separation contained in 12VAC5-610;

b. AOSSs utilizing TL-2 or TL-3 (without disinfection) shall be subject to a horizontal separation of 20 feet; and

c. AOSSs utilizing TL-3 with disinfection shall be subject to a horizontal separation of 10 feet.

Historical Notes

Derived from Volume 28, Issue 05, eff. December 7, 2011.

Statutory Authority

§§ 32.1-12 and 32.1-164 of the Code of Virginia.