Mechanical and utility equipment at ground level shall be placed in the side or rear yard and shall be screened from view by opaque screening from grade level along any public street or adjacent property. Buildings that front on more than one public street may have mechanical and utility equipment located within a street-facing yard, provided it is visually screened using compatible building materials and design as the principal structure. This is applicable only where no other reasonable option exists as determined by the reviewing Board. Roof-mounted mechanical equipment and/or duct work which projects above the roof or roof parapet of a building and is visible from adjacent properties or a public street shall not be permitted. Exceptions: The Board may permit an enclosure that screens mechanical equipment if the material is durable and consistent with the architecture of the building. Satellite dishes shall not be visible from the public right-of-way.