No flammable, combustible/explosive or dangerous material, i.e., gasoline/ propane, etc., shall be kept in any RNH home except as appropriate for gas grills, landscaping equipment, and snow removal equipment. The maximum size for a propane tank is twenty (20) pounds, which is the size normally used for gas grills. Propane tanks more than twenty (20) pounds are permitted provided they are buried underground, and they meet all township building codes and safety requirements. Board approval is required.