Incremental environmental change can be as hazardous as a sudden shock – managing these ‘slow-burning’ risks is vital
Although risk assessment and management procedures try to account for hazards in a systematic way, they often overlook risks arising from incremental and seemingly insignificant environmental changes.
- Although risk assessment and management procedures try to account for hazards in a systematic way, they often overlook risks arising from incremental and seemingly insignificant environmental changes.
- But over time, or when aggregated, incremental changes can lead to significant impacts on human health and wellbeing.
- Incremental changes in our environments can evade regulation if their effects are slow-burning, uncertain, or there is a time lag between cause and effect.
- However, given the requirement for significant change, it is hard to see how these provisions could be used proactively to manage incremental changes.
Respirable mineral dust
- They can gradually accumulate in the lungs, causing diseases such as pleural changes, silicosis and asbestosis, even cancer.
- However, the causes of frequent but low-level exposures to mineral dust have often escaped regulation.
Cumulative effects of incremental loss of green space
- Our built environment of impermeable surfaces is slowly encroaching on urban green spaces and gardens.
- Instead, consent applications are assessed on their individual impacts and there are few mechanisms to sufficiently assess and manage aggregate and cumulative effects.
What needs to happen
- If we continue to only consider the immediate and local effects from individual actions, we are not able to protect people from future cumulative consequences.
- Marc Tadaki receives funding from Te Apārangi Royal Society of New Zealand and the Ministry of Business, Innovation and Employment.
- Martin Brook receives funding from Royal Society Te Apārangi, Toka Tū Ake EQC, and Ministry of Business, Innovation and Employment.
- He is a chartered geologist (CGeol) with the Geological Society of London, and a member of Engineering New Zealand (MEngNZ).