Va. Code Ann. § 2.2-4004

The provisions of regulations adopted under this chapter or the application thereof to any person or circumstances that are held invalid shall not affect the validity of other regulations, provisions or applications that can be given effect without the invalid provisions or applications. The provisions of all regulations are severable unless (i) the regulation specifically provides that its provisions are not severable or (ii) it is apparent that two or more regulations or provisions must operate in accord with one another.