A minimum of one shade tree per newly constructed principal residential unit and/or business establishment shall be required, which shall meet species and planting requirements set forth by the City Shade Tree Commission and Chapter 515, Subdivision and Land Development. If a new principal commercial, industrial or institutional building is constructed, a minimum of one shade tree shall be required for each 50 feet of abutting street length. Such trees are not required to be evenly spaced. The location of the trees shall be subject to approval by the designated City staffperson, and do not necessarily need to be placed within a street right-of- way. If an application will be required by Chapter 515, Subdivision and Land Development, to provide similar tree planting, then the SALDO requirement shall apply in place of this chapter requirement.