Clearing and grubbing batter and trench line

Excavation of Bio Retention Basin.

Pond base preparation and removal of unsuitable materials

Cut and Backfill HDPE anchor trench

Supply and installation of 1.5mm HDPE Membrane

Mechanically fix liner to sand stone wall

Installation of pipework and pits

Connection to existing Bio Retention Basin

Supply and Installation of bio retention media as per drawings and specification.