Noise and Vibration Changes resulting from the type of aircraft and frequency of flights are considered. Reference to works in Fisher’s Valley is included. Whilst the scale of works has been reduced at the airport it is considered that the noise and vibration effects during the construction phase will remain as stated in the ES. Air Quality, Dust and Carbon Emissions Changes resulting from the type of aircraft and frequency of flights are considered with respect to air quality and changes to carbon emissions. Whilst the scale of works has been reduced at the airport it is considered that the effects during the construction phase (related to dust) will remain as stated in the ES. Reference to works in Fisher’s Valley is included. Terrestrial Ecology and Nature Conservation Key issues covered are the additional works and water abstraction in Fisher’s Valley and the reduced scale of earthworks at the airfield and Dry Gut. Landscape and Visual Amenity Key issues covered are the additional works in Fisher’s Valley and the reduced scale of earthworks at the airfield. Cultural Heritage and Archaeology The additional works in Fisher’s Valley are covered in the Addendum. Roads, Traffic and Footpaths Changes include an upgraded road in Fisher’s Valley, the removal of the access to Sharks Valley and the realignment of Post Box Walks. Geology, Contaminated Land and Hydrogeology Key issue relates to water abstraction in Fisher’s Valley. To simplify the assessment, ground and surface water are considered together in a single section in this Addendum. The 2008 ES concluded that there would be no significant effects on geology or from contaminated land. As the 2011 reference design involves a smaller amount of earthworks it is considered that there will be no additional effects associated with contaminated land or geology and these issues are not covered in this addendum. Marine Environment As there are no changes to the works in Rupert’s Bay this topic is not covered in the Addendum. Surface Water Covered together with hydrogeology above. Waste management There is the potential for changes in amount of waste material resulting from reduced scale of earthworks, although the amount of waste is uncertain. The original ES proposed that a Waste Management Plan be prepared prior to construction commencing. The Plan will be based on the most up-to-date design and information on wastes arising. Waste is therefore not covered in this Addendum. Combined Effects The changes to the reference design do not affect the conclusions of the assessment undertaken previously. It is not covered in this Addendum.
Land temporarily affected by construction including all work sites, compounds, lay down areas and camps will be reinstated to its original condition. Implementation of the mitigation measures described relating specifically to land use will ensure the residual impacts resulting from temporary land take are considered to be neutral. Land Use: Comparison of 2007 and 2011 Reference Designs and Summary of Effects Location Residual Effect from 2007 Reference Design Potential Effects of 2011 Reference Design Additional Mitigation Required Residual Effect from 2011 Reference Design Sharks Valley/ Woody Ridge Temporary Minor Adverse Effects resulting from land take at Woody Ridge to provide access to Sharks Valley None. Access no longer part of reference design. None Change from Temporary Minor to No Effect. Prosperous Bay Plain and Dry Gut Minor Adverse None. Reduced area of landtake. None Remains Minor Adverse Compound near Government Garage Minor adverse but most of land take is temporary. Small additional area of land take (not privately owned) Generic measures outlined in EMP will apply. Remains Minor Adverse Fisher’s Valley None. Area was not part of original design. Temporary loss or disruption to land use/ pastoral land Design will ensure loss of land kept to a minimum and access maintained. Fully restore land after works completion. Temporary Minor Adverse Permanent loss of pastoral land and other land take. Design will ensure loss of land kept to a minimum and access maintained. Minor Adverse
Terrestrial Ecology and Nature Conservation: Comparison of 2007 and 2011 Reference Designs and Summary of Effects Location Residual Effect from 2007 Reference Design Potential Effects of 2011 Reference Design Additional Mitigation Required Residual Effect from 2011 Reference Design PBP, including Eastern Plateau, site for the main airport, the Central Basin and Dry Gut Very large adverse to Large adverse depending on scale of land-take for construction and success of mitigation. Effects are as those stated for the 2008 ES but with a reduced amount of land take and potentially greater protection from wind. Potentially a Very large adverse impact Mitigation as for 2008 ES but with modifications reflecting the changes in design. Success of mitigation is uncertain. Therefore assessed as being between Large Adverse to Moderate adverse depending on success of mitigation Fisher’s Valley Key wetland habitat for indigenous Moorhen, plants and invertebrates and the Wirebird Ecological Interest considered High value Not assessed Potentially a Large adverse impact but this could change in the light of full information. Further assessment of the effects of ground water abstraction on stream flow is needed. A mitigation strategy will need to be put in place to maintain the nature conservation value of the area as a wetland. There is a level of uncertainty with regards full understanding of the impacts on stream flow and the ecological structure and function of the wetland. Ecological impacts at Fishers are therefore assessed as being between Major adverse to minor adverse depending on full information and success of mitigation. Sharks Valley/ Woody Ridge Access works not assessed as having significant effects. Minor Adverse Access works removed from reference design None required. No Effect Sub-
Visual Amenity Users of Sharks Valley Post Box walk Moderate Adverse for short sections of the route No impact on upper section of the route with Moderate Adverse remaining for short sections of the lower part of the route No additional mitigation required No impact on upper section of the route with Moderate Adverse remaining for short sections of the lower part of the route Residential properties at Longwood Minor Adverse Minor-Moderate Adverse (depending on orientation of view) Fisher’s Valley Mitigation Strategy Minor-Moderate Adverse (depending on orientation of view) Users of Fisher’s Valley footpath Minor Moderate Adverse Fisher’s Valley Mitigation Strategy Moderate Adverse (short sections of the route only) Effects on the visual amenity of all other receptors will remain unchanged.