Prior to the issuance of any special antenna permit or building permit, the applicant shall furnish an inventory of all known antenna support structures sites located in or within one-half (½) mile of the City limits that could be used for the applicant's antenna attachment. The inventory shall identify the owner of the facility, its type and reference name or number and the street location, latitude and longitude, height, type and mounting height of existing antennas and an assessment of available space for the placement of additional antennas, shelters and/or cabinets. The applicant shall further demonstrate why co-use on the identified facilities is inappropriate or was otherwise not allowed.