Every parcel of land hereafter used as a public, commercial or private parking lot shall be developed and maintained in accordance with the following requirements.  Plans for offstreet parking in the "C-5" District, including screening, landscaping and setbacks, shall require approval of the Board of Appeals.
   (a)   Minimum Distance and Setbacks.  No part of any parking area for more than five vehicles shall be closer than twenty feet to any dwelling, school, hospital or other institution for human care located on an adjoining lot, unless screened by an unpierced masonry wall.  In no case shall any part of a parking area be closer than five feet to any established street or alley right of way.  The wall or hedge required in Section 1149.03 (b) shall not extend into any front yard required by this Zoning Ordinance.  Off-street parking areas for more than five vehicles shall be effectively screened on each side which adjoins or faces premises situated in any "R" District, or institutional premises, by a masonry wall or solid fence.
   (b)   Joint Use.  Two or more nonresidential uses may jointly provide and use parking spaces when their hours of operation normally overlap, provided that a written agreement, approved by the Director of Law and accepted by the Board shall be filed with the application for a Certificate of Compliance.
   (c)   Other Locations.  Parking spaces may be located on a lot other than that containing the principal use provided it is within 300 feet.  Lots farther than 300 feet from the principal use may be accepted provided that a written agreement, approved by the Director and accepted by the Board, shall be filed with the application for a building permit.
   (d)   Surfacing.  Any off-street parking area for more than five vehicles shall be graded for proper drainage and surfaced with concrete, asphaltic concrete, or premixed asphalt pavement or blacktop so as to provide a durable and dustless surface.  Access drives shall be at 300 foot minimum intervals.
   (e)   Lighting.  Any lighting used to illuminate any off-street parking area shall be so arranged as to reflect the light away from adjoining premises in any "R" District.
   (f)   Disabled Vehicles.  The parking of a disabled or unlicensed vehicle within a residential or commercial district for a period of more than two weeks shall be prohibited, except that such vehicles may be stored in an enclosed garage or other accessory building.  Disabled vehicles in violation of this section shall be removed from the premises by the City at the expense of the owner of the vehicle or property on which the vehicle is located.
   (g)   Parking of Commercial Vehicles in a Residential District.  Parking of commercial vehicles with a gross weight of greater than three tons is prohibited in all residential districts except those commercial vehicles conveying the necessary tools and materials to premises where labor using the tools and materials is to be performed during the actual time of parking.
   (h)   Landscaping of Parking Areas.  All parking lots shall provide, in addition to screening requirements, two inches dbh (diameter, breast, height) tree trunk size for every six parking spaces.  All trees shall be balled and burlapped.  The minimum diameter at breast height of any tree shall be two inches.  Planting beds for parking lot trees shall be constructed so as to distribute landscaping throughout the parking lot and minimize damage to trunks and roots of the trees from vehicles, pedestrians and parking lot maintenance through the use of adequate soil planting area and curbing or parking blocks.  Planting soil area per tree shall be a minimum of forty-five square feet.  The minimum dimension for the planting area shall be five feet on any one side.  All trees shall be maintained in a healthy condition.  Any lot with a minimum dimension of fifty feet on any one side shall have at least one tree planting bed per 6,000 square feet of paved surface.  The minimum distance between deciduous trees needed to meet code requirements located in separate planting beds shall be thirty-six feet.  Additional landscaping, trees, ground cover, hedge or evergreens may be located between deciduous trees.
      (Ord. 22-87.  Passed 5-11-87.)