TRIGGER VALUES FOR STORM WATER DISCHARGES

The EPA has issued a draft guidance documented is intended for use by EPA licensed sites in order to provide licensees with a methodology for setting appropriate site specific trigger levels at storm water discharge points.

• The EPA has issued a draft guidance documented intended for use by EPA licensed sites to provide licensees with a methodology for setting appropriate site specific trigger levels at storm water discharge points.
• The Water Framework Directive (WFD) requires no deterioration in the status of a water body.
• The status of and possible impacts on receiving waters from storm water discharges can affect this status and must be considered.
• Trigger levels on the discharge can be utilised as a tool to ensure the maintenance of the status of the stream.
•  Trigger level is defined in the licence as a parameter value, the achievement or exceedance of which requires certain actions to be taken by the licensee.

http://epa.ie/downloads/consultation/Licensee%20Guidance%20on%20the%20setting%20of%20trigger%20values%20-%20Draft%20for%20web%20.pdf