Md. Code, Agriculture § 8–8A–07

(a) (1) Subject to paragraph (2) of this subsection, a permit shall expire on the date the Department sets at the time the permit is issued or renewed.

(2) The term of a permit may not last for more than 1 year.

(b) (1) The Department may renew a permit if the permit holder:

(i) Is in compliance with:

1. The conditions of the permit;

2. The requirements of this subtitle;

3. All applicable regulations established by the Department; and

4. An applicable discharge permit under § 9–301 of the Environment Article;

(ii) Submits to the Department in a timely manner a renewal application on the form that the Department requires; and

(iii) Pays a renewal application fee.

(2) The Department may refuse to renew a permit if:

(i) The permit holder violates this subtitle, any regulation adopted by the Department under this subtitle, or any condition of the permit;

(ii) The Department determines that continued operation of any area covered by the permit would be injurious to the environment or public health, safety, or welfare; or

(iii) The Department determines that there is any other good cause.