4 Va. Admin. Code § 25-150-430
C. Disposal in a pit. Drill cuttings and solids may be disposed of on-site in an approved pit, without testing of the material.
The drill cuttings and solids shall be covered with a liner meeting the standards of 4VAC25-150-300, or a low-permeability clay cap, and shall be covered by soil. The combination of soil and liner or cap shall be at least four feet thick, capable of shielding the cuttings and solids remaining in the pit, suitable for supporting vegetation, and sloped to prevent ponding.
§§ 45.1-161.3 and 45.1-361.27 of the Code of Virginia.
Derived from VR480-05-22.1 § 1.43, eff. September 25, 1991; amended, Virginia Register Volume 15, Issue 2. eff. November 11, 1998.