Requiring, in Calvert County, that certain subdivision plats be prepared and endorsed by certain individuals in a certain manner; requiring certain subdivision plats or deeds of dedication to include a certain signed and acknowledged statement; authorizing the filing, recording, and indexing of certain subdivision plats in a certain manner; establishing that recordation of a certain subdivision plat operates as a transfer of a certain easement to the Board of County Commissioners of Calvert County for certain purposes; etc.