Why Hazard Assessment Requires Expert Eyes
A tree danger evaluation involves much more than just determining whether a tree seems stable. Examining the root flare for indications of basal decay, probing the trunk for hollow sections, analyzing the crown for asymmetry that suggests root failure on one side, assessing the soil surrounding the base for indications of root plate movement, and checking branch attachments for included bark or crack propagation are all part of a professional arborist's hazard assessment.
Many trees that fail catastrophically and cause major property damage or personal injury show no obvious external warning signs in the weeks before failure. This is particularly true for root rot and internal trunk decay, which can progress for years without breaking the bark surface. A tree with 60 to 70 percent internal decay can still look perfectly healthy from the outside and yet be on the verge of sudden complete failure.
A1 Tree Service's certified arborists in Anna, IL use a combination of visual assessment, resistance drilling, and sonic tomography techniques to evaluate internal wood condition where appropriate. We provide written risk assessment reports and recommend removal, monitoring, or mitigation options based on the specific hazard profile of each tree.
Conditions That Create Hazardous Trees
Internal Trunk Decay
The exterior bark remains intact while the structural wood fiber is destroyed by fungal rot inside the trunk. Before exhibiting any outward symptoms, trees can lose up to 70% of their intrinsic wood strength.
Root System Failure
Roots that have been harmed by drought, disease, construction, or soil compaction may collapse abruptly and without any above-ground signs, leading to total uprooting.
Severe Lean Development
Root collapse or soil instability may be the cause of a tree that has developed a substantial lean over time, particularly if the lean is accelerating.
Major Crack Propagation
A structural failure in progress is indicated by cracks that penetrate the trunk or major branch unions. These trees are extremely vulnerable to abrupt splitting.
Dead Tops and Branch Death
Lethal root disease or severe vascular disruption are common causes of sudden death of the entire upper crown, indicating that the tree's structural integrity is already damaged.
Multiple Previous Failures
Trees that have seen multiple major limb failures may have a disease or systemic structural weakness that will lead to more failures.
How We Remove Hazardous Trees Safely
Comprehensive Risk Assessment
Before developing a removal strategy, our arborist assesses the tree using visual inspection and, if necessary, mechanical testing equipment to ascertain the type and extent of the hazard.
Specialized Removal Planning
Hazardous trees require customized removal plans. Decayed wood behaves unpredictably when cut, and compromised root systems can shift unexpectedly. We plan for these variables before work begins.
Advanced Equipment Deployment
We use aerial lifts, cranes, and precision rigging to work on trees that cannot be safely climbed, allowing controlled sectional removal without putting crew members in dangerous positions.
Controlled Removal and Full Cleanup
Every section is brought down under controlled conditions, and the site is fully cleared before we consider the job complete. We confirm no residual hazards remain before leaving your property.