Writing a Site Pollution Prevention Plan
A site pollution prevention plan sets out how a construction project will prevent pollution of water, ground and air throughout the works. It identifies the risks and receptors, specifies the controls, and assigns roles, monitoring and emergency response - turning individual products into a managed system.
What a Pollution Prevention Plan Covers
Every individual control on a site - silt fences, drain guards, plant nappies, wheel wash - only works as part of a plan. A site pollution prevention plan is the document that identifies the risks, sets out the controls, and assigns who does what, so pollution is prevented by design rather than reacted to. It's increasingly expected, and often required. Here's what goes into one.
Identifying the Risks and Receptors
A pollution prevention plan starts by understanding what could cause pollution and what could be harmed. The risks on a typical site include sediment from disturbed ground, fuel and oil from plant and refuelling, concrete and wash-out (highly alkaline), and others depending on the works. The receptors are what those pollutants could reach and damage: nearby watercourses, surface water drains, groundwater and the land itself. Mapping the risks against the receptors shows where controls are most needed - for example, works close to a river need particular attention.
Specifying the Controls
- Sediment controlSilt fences, socks, curtains and settlement - see silt fence installation and choosing a barrier.
- Drainage protectionDrain guards, covers and inlet filters - see protecting site drains.
- Spill prevention & containmentPlant nappies for drips, and proper containment for fuel storage and spills.
- DewateringSilt bags and controlled discharge - see dewatering and discharge to watercourse.
- Road cleaningWheel wash and sweeping - see road cleaning and wheel wash.
Roles, Monitoring and Response
A plan is only as good as its implementation, so it sets out who is responsible for the controls and their upkeep, how and how often things are inspected and monitored (are the silt fences maintained, the drain guards cleared, the discharge quality checked), and what happens in an emergency - the spill response, who to contact, and how to contain an incident. Naming responsibilities and building in monitoring is what keeps the controls working through the whole project, not just at the start.
Meeting Planning and Environmental Requirements
The plan should reflect the site's planning conditions and any environmental requirements or consents, and draw on recognised good-practice guidance (such as CIRIA guidance for construction pollution prevention) and the expectations of bodies like Inland Fisheries Ireland and the EPA. A clear, followed plan is what demonstrates the site is managing its environmental risks - and what an inspection looks for.
Frequently Asked Questions
What is a site pollution prevention plan?
It's a document setting out how a construction project will prevent pollution of water, ground and air: identifying the risks (sediment, fuel, concrete) and the receptors (watercourses, drains, groundwater), specifying the controls for each, and setting out roles, monitoring and emergency response. It turns individual controls into a managed system.
What should a construction pollution prevention plan include?
The pollution risks and the receptors that could be harmed; the controls for each (sediment control, drainage protection, spill prevention and containment, dewatering, wheel washing); the roles and responsibilities; inspection and monitoring; and the emergency spill response. It should reflect the planning conditions and good-practice guidance.
Why does a site need a pollution prevention plan?
Because individual controls only work as a coordinated system, and preventing pollution by design is far better than reacting to an incident. A plan identifies the risks, specifies and assigns the controls, and builds in monitoring and emergency response. It's increasingly expected or required, and it's what an environmental inspection looks for.
Control It at Source, with SSI Environmental
SSI Environmental has supplied spill, sediment and site environmental protection products across Ireland since 1996, from silt fences and dewatering bags to drain guards and plant nappies. Tell us about your site and its planning conditions, and we'll help you specify the controls to keep sediment and pollution where they belong.