16.50.060 Tree preservation plans—Contents.
A. All tree preservation plans submitted pursuant to this chapter shall show the following information, if applicable:
1. Location of all improvements on the site including proposed cleared areas and/or individual trees to be removed;
2. The approximate location of any existing structures and land uses on the site including construction staging areas;
3. The location of all existing and proposed streets, rights-of-way, easements, underground utilities, skid roads, haul roads, and landings within the proposal;
4. Existing healthy trees to be retained including the diameter (at four and one-half feet above grade), species, and location on the site;
5. Existing trees proposed for removal including the diameter and location on the site;
6. Proposed new trees to be planted including the botanical names and sizes;
7. Tree unit credits calculated to document compliance with Section 16.50.070. These calculations shall include:
a. Calculation of net site area determined by subtracting the area of public and private road rights-of-way,
b. Calculation of tree unit credits proposed for retention on the site excluding existing trees in adjacent opened or unopened rights-of-way, and
c. Calculation of tree unit credits for newly planted trees, if applicable,
i. Newly planted trees in rights-of-way (street trees) or along alleys shall count towards tree unit requirements;
8. The location of future land development including stormwater management facilities, and vegetation to be retained for site landscaping, open space, wildlife habitat, screening, and/or buffers, to the extent known;
9. Site topography at a contour interval of ten feet or less;
10. Critical areas and critical area buffers regulated pursuant to Chapter 19.70—Critical Areas;
11. Drainage ways and culverts;
12. Site area targeted for further harvest including proposed timing, if applicable;
13. North arrow and scale shall be shown on all site plans. The scale shall be no smaller than one inch to one hundred feet;
14. A watering plan is required for tree preservation plans that propose new tree plantings. The plan must provide for adequate watering of the newly installed trees at the time of planting and through the dry periods (typically May — September) for a minimum of three years. Some situations (infill in existing forested area where new trees are planted in the fall rainy season) may require only limited watering; and
15. A root protection plan is required; see Section 16.50.130.
B. Information utilized in tree preservation plans shall be prepared by an ISA certified arborist.
C. Field Marking of Site Features. At the time of submittal of any application required pursuant to this title, the following features shall be clearly marked at the site with flagging by the applicant:
1. The location of any identified critical areas and critical area buffers regulated pursuant to Chapter 19.70 - Critical Areas;
2. The centerline of all proposed access roads;
3. Property boundaries; and
4. Encircle trees to be saved with an orange fence with signs “to be saved.”
D. The planning director may waive specific tree preservation plan contents that are determined to be unnecessary for review of the particular tree removal activity. In such event, the director shall document the waiver in the project file or project log. (Ord. 2756 Att. F, 2006)