(1) Yard Setback Landscaping. All required minimum yard setback areas indicated in SMC 17.60.040, Table of dimensional and density requirements, shall be landscaped with suitable ground cover and deciduous or evergreen trees. The sum total of the site shall have not less than 15 percent landscaping. Landscaping must be included within the interior of the lot. (Ord. 1110 § 3, 2002).