Street trees shall be required in the park strip area between a sidewalk and the curb and gutter of every street. Said trees shall be of a minimum size of no less than two inch (2") caliper, and one tree shall be placed every twenty (20) to thirty feet (30') depending on the canopy spread of the tree. Tree species shall be as required in the adopted Mapleton City tree list as per chapter 18.56 of this title. Seventy five percent (75%) of front yards must be lawn or other appropriate landscaping. That area not kept in landscaping must be hard surfaced areas, such as driveways, pathways, or other recognized landscape materials as mentioned in chapter 17.15 of this code. (Ord. 2007-24, 11-7-2007)