Flow Chart of Level 2: Basic Assessment Procedures Level 3: Advanced Assessment Advanced assessments are performed to provide detailed information about specific tree parts, defects, targets, or site conditions. They usually are conducted in conjunction with or after a basic assessment if the tree risk assessor needs additional information and the client approves the additional service. Specialized equipment, data collection and analysis, and/or expertise are usually required for advanced assessments. These assessments are therefore generally more time intensive and more expensive. Procedures and methodologies should be selected and applied as appropriate, with consideration for what is reasonable and proportionate to the specific conditions and situations. The risk manager/property owner should consider the value of the tree to the owner and community, the possible consequences of failure, and the time and expense needed to provide the advanced assessment. Advanced assessments can provide additional information that may make the difference between recommending tree or branch retention or removal. The tree risk assessor should identify what additional information is needed and recommend the appropriate technique(s). 19