All acid material encountered during the mining operation shall be properly controlled to prevent adverse impacts on surface or groundwater quality. Upon completion of mining, acid materials shall be covered with a material capable of shielding them and supporting plant cover in accordance with the approved reclamation plan. Unless otherwise specified by the director, the minimum cover shall be four feet in depth.
4 Va. Admin. Code § 25-31-380
Statutory Authority: §§ 45.1-161.3 and 45.1-180.3 of the Code of Virginia.