Storm shelters intended to provide protection to human life during periods of danger from storms, nuclear fallout, air raids or other emergencies may be constructed, erected and maintained in any district as principal or accessory uses, subject to all yard and area requirements applicable in the district where located and to the following:
A. Location and Yard Encroachments: Such shelters may be contained in other structures or may be constructed separately. If entirely underground, storm shelters may be constructed within any yard, including front yards, which otherwise are required by this Title to be kept and maintained free from buildings and structures; provided, that no part of said underground shelter shall project above the average grade of such yard, including ventilating devices, and provided, that no entrance or exit shall open into such yard.
B. Joint Shelters: The Zoning Board may recommend to the Village Board the authorizing of joint shelters by one or more property owners, as a conditional use, in accordance with the provisions of Sections 10-12-4 and 10-12-5 of this Title. In recommending such joint shelters, the Board may recommend the modification of or waiving of side and rear yard requirements on the lot or lots directly involved in the construction of the joint shelter; provided, that all applicable yard requirements shall be met where the lot or lots involved in the joint shelter abuts property not included in the project. (Ord. 93-695, 6-15-1993)