Strandhill, WWTW Coastal Defences

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Strandhill, WwTW Coastal Defences

Sligo County Council

RPS was appointed to undertake the design, project management and construction supervision of coastal works to protect the extended WwTW at Strandhill.

The beach extends from the rocky Killaspug Point at its northern end to Portcurry Point at the entrance to inner Ballysodare Bay. The beach is backed by an extensive system of sand dunes which hold the designation of Special Area of Conservation. The proposed coastal works had to provide protection for the waste water treatment works for both the present day and future water levels and wave climate.

The fixed grey dunes in the area between the fenced sewage treatment works and the sea, in addition to being a priority habitat for the SAC, was also found to be of the highest quality optimum habitat for the Annex I feature SAC species Vertigo angustior. Therefore, the protection works had to be carefully designed and implemented, and the construction methodology subjected to a full Appropriate Assessment to ensure that no adverse impacts were encountered to the surrounding SAC habitats and species.