The Department of Playground and Recreation shall have the right to renew any and all grants heretofore made on any of said public beach lands at the expiration of the term of any of the present grants involving said lands, provided the same is done in conformity with the trust under which any of said lands are held by the City, and, provided, further, that any such grant is made in conformity with the general laws of the State of California, the Charter of the City and the provisions of this article.