Planting Standards:

1. Tree mixture^1,3

At least 75 percent evergreen with a variety of species required and up to 25 percent deciduous

Approximately 50 percent evergreen with a variety of species required and 50 percent deciduous

2. Tree planting pattern

Approximately 20 feet on center in triangular or offset pattern

Approximately 30 feet on center in triangular or offset pattern

3. Shrub mixture²

At least 75 percent evergreen with a variety of species required and up to 25 percent deciduous

Approximately 50 percent evergreen with a variety of species required and 50 percent deciduous

4. Shrub planting pattern²

Approximately three feet on center in triangular or offset pattern

Approximately five feet on center in triangular or offset pattern

5. Groundcover

Evergreen planted 12 inches on center in a triangular or offset pattern

Evergreen planted 12 inches on center in a triangular or offset pattern

6. Individual planting standards

Notes:

¹ The number of evergreen and deciduous trees and the spacing of the trees may be reduced by up to 50% within Type A or B landscaping when existing vegetation and significant trees are retained. The amount of permitted reduction shall be double the percentage of existing vegetation and significant trees retained.

² As an alternative to shrubs, or in combination with shrubs, smaller deciduous and evergreen trees may be incorporated into the landscaping plan at a rate of not less than one tree per eight lineal feet with not more than 10 feet on center separation.

³ The director may modify the mix of evergreen and deciduous trees and the spacing of the trees and reduce by up to 50% the number of trees required within a Type A or B landscape area inside or outside a stormwater facility perimeter fence for safety and security purposes.