Groundwater might not be the first thing on your mind when you apply for planning permission. For a great many, that would be expected to only apply in certain circumstances. For particular types of development (e.g., brownfield), local authorities will demand proof that they will not significantly exacerbate pollution risk or problems with floodwater. Groundwater reports at that point become essential.
If the site has historic industrial or commercial use (e.g., garages, factories, depots, landfills or dry cleaner residue, etc.) you may be asked for information about groundwater. Pollution can even be invisible, with pollutants sitting in the soil and seeping into groundwater over time.
Risk assessment – Planning teams can ask for a risk assessment, which outlines what’s been taken into account and lists the tests that have been planned. For advice on Groundwater Remediation, contact //soilfix.co.uk/services/groundwater-remediation
Location also matters. If your site is situated near a river, stream, wetland or “controlled waters”, and potentially within a protection zone, you may also attract the attention of regulators. In areas where groundwater flow may be affected (most likely to occur at deep excavations, basements or in cases of piling and dewatering), there is the potential for contamination to spread, so a report could also be needed.
The first step often involves a Phase 1 Desk Study. It examines old maps, environmental records and the history of a site to determine likely hazards. If issues are noted, a Phase 2 Site Investigation can be required that often involves bore holes, monitoring wells and groundwater sampling. When issues are verified, a corrective action and verification plan will be required before releasing conditions.
The key is timing. You can work with a specialist early to understand what reports are likely, reducing delays and surprises as your project moves forward.