11.4 Tree Removal Work Planning: Site Assessment, Method Selection & Traffic Control

The Climbing, Rigging and Removal area asks the arborist to develop a work plan for tree removal by considering the tree's size and shape, species attributes, and its health and structural condition. At master level the question is rarely how to make a cut — it is how to choose the method and how to organize the site so the chosen method is survivable.

Step 1: Assess the Tree

The single most important structural question is whether sound hinge wood exists. Directional felling depends on a hinge of intact fibre controlling the fall. Extensive basal decay, a large cavity in the intended hinge, or a stem crack through the hinge zone removes that control, and the correct response is to dismantle the tree in sections or to crane it rather than to fell it and hope.

A tree unsafe to climb is unsafe to climb regardless of the crew's willingness. Root plate movement, extensive stem decay, a hanging or lodged top, storm-damaged material under load, and dead brittle stems are all indications for an aerial lift, a crane, or a mechanical dismantling approach.

Step 2: Assess the Site

Work outward from the tree:

• Targets. Structures, vehicles, utilities, fences, pools, ornamental plantings, adjacent trees to be retained, and — the target that matters most — people.
• Drop zone. Is there a clear area of sufficient length and width to receive whole sections? If not, every piece must be rigged, and the plan must say so.
• Access. Can a chipper, a lift, a crane, or a loader reach the work? Gate widths, overhead clearances, ground bearing capacity, slope, buried structures, septic fields, and irrigation lines all constrain equipment.
• Overhead conductors. Their presence determines whether the work may lawfully be performed by the crew at all. Non-qualified arborists must remain outside the minimum approach distance; work inside it requires qualified line-clearance personnel and utility coordination.
• Underground utilities. A locate request must be placed and the marks honoured before stump grinding or any excavation.
• Ground conditions. Saturated ground under an outrigger is a crane tipping hazard; matting and cribbing are plan items, not afterthoughts.
• Neighbouring property and permissions. Access across a neighbour's land, or dropping into it, requires permission in writing.
• Regulatory constraints. Removal permits, protected tree ordinances, nesting bird restrictions, and protected species seasonal restrictions on tree removal all belong in the plan before the crew mobilizes.

Step 3: Select the Method

Crane removal is a method for removing exposure, not for saving time. It transfers the piece's weight off the stem before the cut is completed and lifts it away from the target rather than dropping it. That benefit is only realized when the load weight is calculated in advance, the crane is set up on adequate bearing, the lift plan and signalling protocol are established, and the climber's attachment and position relative to the load are defined before the first pick.

Step 4: Traffic Control

Any removal on or adjacent to a public roadway requires a temporary traffic control plan complying with the applicable national manual on uniform traffic control devices, and the safety standard for arboricultural operations requires compliance with it.

A standard work zone has five parts, in order of travel:

[ ADVANCE WARNING AREA ] -> [ TRANSITION AREA ] -> [ BUFFER SPACE ]
        signs                   taper with cones          no work,
   telling drivers what          moving traffic          no equipment
      to expect ahead           out of the lane         (crash cushion)
                                                              |
                                                              v
                   [ TERMINATION AREA ] <- [ WORK SPACE ]
                     traffic resumes         crew, chipper, chip truck,
                    normal operation         drop zone

Plan items: advance warning sign placement appropriate to the posted speed, taper length appropriate to speed and lane width, cone or channelizing device spacing, high-visibility apparel for every worker exposed to traffic, a flagger where one lane must be shared, illuminated devices for low light, and a plan for pedestrian routing — pedestrians must be given a defined, protected path, not directed into the travel lane.

Step 5: Organize the Crew and the Drop Zone

• Job briefing before work begins, covering the plan, the method, the sequence, hazards including electrical and embedded hardware, emergency procedures, the location of the nearest medical facility, and each worker's assignment.
• Defined drop zone with no personnel inside it while material is aloft or being cut, and a standardized command-and-response protocol so every drop is acknowledged.
• Felling exclusion zone extending at least the required distance around the stem during felling operations, entered only by those directly involved.
• Escape routes planned and cleared before any felling cut.
• Second qualified person on site capable of performing an aerial rescue whenever a climber is aloft.

Step 6: Debris, Stump and Restoration

The plan must state the disposition of material: chipped on site, hauled, cut to cord length and stacked, milled, or retained as habitat. Where a regulated pest is present — an infested ash, elm, or host of a quarantined organism — the movement of the wood may itself be regulated, and the disposal method is a compliance question, not merely a logistics one.

Stump treatment options are grinding to a specified depth, chemical treatment of the cut surface to prevent resprouting in species that sucker aggressively, or leaving the stump. Grinding requires a completed utility locate, eye and face protection, and a plan for the grindings, which are not a soil substitute for replanting.

Restoration expectations — turf repair, soil replacement in the grinding void, cleanup standard — belong in the written scope so the client's expectation and the contractor's price match.

Documentation

For a consulting arborist overseeing rather than performing the work, the removal work plan is a deliverable: the assessment findings, the selected method with the reasoning, the traffic control arrangement, the utility coordination, the regulatory approvals obtained, the debris disposition, and the restoration standard. That document is what protects the client and the arborist when something goes wrong.