Water Quality - Suspended Solid and Dissolved Oxygen Assessment

First a desktop review of existing data was carried out.  Where gaps existed new offshore surveys were conducted to collect data on
baseline water quality.  This included conducting new offshore sediment sampling and also monitoring the
suction caisson test in
May 2008 to verify model assumptions.

Position of New Sampling Stations                                                                Setup of Offshore Caisson Test Monitoring
Consideration of 5 worst case scenarios for construction activity happening concurrently were agreed with EPD and then modelled
using approved 3D water quality modelling software