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Practical guidance

Pollution prevention: start at the source

Follow the source, pathway and receptor to choose controls that prevent releases before relying on treatment or clean-up.

EnvironmentalManagement.help editorial desk · Reviewed

Pollution prevention starts by reducing or avoiding the generation of pollutants and the conditions that allow releases. Treatment and response arrangements can still be necessary, but they serve a different purpose from preventing a problem at its origin.

Understand the source and pathway

List the activities that can release substances, dust, noise, heat or other pressures. Identify where those pressures go and which people, environmental media or ecosystems may be affected.

A liquid spill in a delivery area may move through drains. Dust from a materials-handling activity may travel through air. Contaminated runoff can connect land-based operations to receiving waters. The aspects and impacts distinction helps keep the analysis clear.

Prefer controls that remove the cause

Possible measures include changing a material, reducing the quantity held at a work area, using closed transfer, preventing leaks or redesigning a process. Evaluate alternatives carefully. A replacement substance may reduce one environmental pressure while creating another.

Where source prevention is insufficient, consider containment, segregation, collection or treatment suited to the actual hazard. Confirm that equipment, capacity, maintenance and operating arrangements match the process.

Check controls during real operating conditions

A control can work during a demonstration and fail during a busy shift. Observe deliveries, cleaning and maintenance as well as routine production. Check access to isolation points and response equipment. Make responsibilities clear for contractors and temporary workers.

Common inspection questions include:

  • Are containers compatible with their contents and in suitable condition?
  • Are drainage routes understood and accurately identified?
  • Can rainwater or wash water bypass the intended control?
  • Is there a response plan for abnormal conditions?
  • Are inspection findings followed through to closure?

These are suggested review questions, not a substitute for site-specific requirements.

Monitor whether the control is effective

Use observations and relevant measurements to check performance. An absence of reported incidents may mean there have been no incidents, or that reporting is weak. Combine incident information with inspections and other evidence.

Link findings to performance indicators and corrective action. For jurisdiction-specific discharge limits, permissions and reporting duties, consult the appropriate environmental authority.

Sources and further reading

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