§ 92-b. Permits authorizing flow of springs. The commissioner of parks and recreation may issue an annual permit permitting the flow of such spring in such amount and at such times as such permit shall specify. No permit shall be issued unless it appears that the flow of such spring will not result in the depletion of the amount of flow, gas or mineral content of the spring for which a permit is asked, or of any other like spring, nor unless it also appears that the flow of said spring is of scenic interest or that the flow of such spring is necessary to regulate or protect the flow of neighboring springs. If at any time it satisfactorily appears to the commissioner of parks and recreation that the required conditions for issuing a permit no longer exist, such permit may be revoked upon ten days notice.