Md. Code, Land Use § 1–406

(a) (1) The planning commission for a charter county shall include in the comprehensive or general plan the visions under § 1–201 of this title and the following elements:

(i) a development regulations element;

(ii) a housing element;

(iii) a sensitive areas element;

(iv) a transportation element; and

(v) a water resources element.

(2) If current geological information is available, the plan shall include a mineral resources element.

(b) The planning commission for a charter county may include in the plan a priority preservation area element developed in accordance with § 2–518 of the Agriculture Article.