An important foundation and the basis for any cost-effective management plan is an accurate, comprehensive inventory of all subject trees. A tree inventory should reasonably identify the number, species, size and general condition of each subject tree. A well-structured inventory record should ensure clear communication of each tree’s condition, focused specifications for tree maintenance work, and minimize the risk of miscommunication and errors.
During the inventory process, and on a regular follow-up using the inventory database as a foundation, a ground-based inspection and assessment of each subject tree is recommended.
Arbor Global conducts assessments according to the standards and practices described within the American National Standard Institute (ANSI) A300 (Part 9) Tree Risk Assessment; a. Tree Structure Assessment – Standard Practices. Subject trees are assessed for risk factors, and signs and symptoms of health issues.
Tree Management Recommendations
According to the findings and conclusions of tree assessment, AG recommends practical, cost-effective risk reduction and tree health management measures as appropriate. Risk reduction and tree health management measures include, but may not be limited to:
- Relocation of targets;
- Restriction of the fall zone of the subject tree;
- Crown cleaning and/or crown reduction pruning;
- Installation of tree support systems;
- Tree removal; or
- Tree health mitigation measures that may include, but are not be limited to:
- Removal of turf grass near to the subject tree,
- Installation of mulch,
- Supplemental water,
- Soil testing and condition or structure modification.
Risk reduction and health mitigation are prioritized according to tree condition and projected, most likely timing for tree part failure or tree health treatment efficacy.