(1) A person or public agency may request that an order be modified or revoked. The request must contain allegations supported by substantial evidence showing that the criteria in 85-2-311 can be met for an application or a class of applications from the source. If not so supported, the department may reject the request without a hearing.
(2) The department may by order after a hearing modify or revoke any order made as provided in 85-2-321 and 85-2-322 upon such notice and in such manner as is reasonable under the circumstances.