Environmental and Sustainable Work Practices
Sustainability on site
Sustainable construction means reducing waste, energy, water and pollution across the project. A candidate must understand waste segregation and the waste hierarchy (avoid, reduce, reuse, recycle, dispose), resource efficiency, and the correct handling of hazardous materials such as solvents, paints and asbestos-containing material. Know that sediment, dust, noise and runoff must be controlled to protect waterways and neighbours, and that environmental incidents must be reported. Understand the purpose of environmental management plans and site-specific controls such as silt fences and bunded storage.
Common traps
Questions often test the waste hierarchy by asking for the most preferred option, not the most convenient one. Another trap is confusing recycling with reuse, or assuming a material can go in general waste because it is small. Candidates also slip on asbestos: if material is suspected, stop work, do not disturb it, and report it. Questions may test which controls prevent pollution versus which merely contain it, and the legal duty to report spills.
Worked example
A crew has offcuts of treated timber and empty solvent containers. Correct practice: segregate treated timber for appropriate disposal or recycling according to site rules, keep solvent containers sealed in a bunded area for correct disposal, and never burn or bury either. Rule of thumb: if it could contaminate soil or water, contain it, label it and report it.