On 14 March 2017 the Environment Agency added to their suite of online Guidance by publishing information on those extremely low-risk discharges which are not considered groundwater activities but are considered exclusions and as such do require an environmental permit or exemption. This covers:
Accidents and natural causes exclusion;
Very minor discharges exclusion – also called ‘de minimis’;
Risks to human health or the environment exclusion; and
Disproportionate cost for land contamination exclusion.
To read this guidance in detail please go to https://www.gov.uk/government/publications/groundwater-activity-exclusions-from-environmental-permits/groundwater-activity-exclusions-from-environmental-permits#disproportionate-cost.