SECTION 3 - Interrogate the database to select the individual activities << Prev Next >>
Section
- In this section, there is a need to identify the environmental changes (qualitative & quantitative) potentially arising from the proposal. This is done by selecting the known project activities from the database. The database then identifies the environmental changes potentially arising.
- Click the brown 'activities tab' and select the individual activities and then click on the 'add activities to report' button. The database will create a table of environmental change against activity.
- General information about these environmental changes are shown under the green 'Environmental Change List' tab.
- Use the text box below to quantify these environmental changes as far as is possible at this stage.
Environmental Change List
| Environmental Change |
Select Activities
Path:
Select activities >>
Tips
- If the completed table is shown under the brown ‘activities tab’ and you want to edit it, you need to click on ‘clear activities’ at the top and start again
- Under the brown ‘activities tab’ click on the text of the activities for more information.
- The table of activity against environmental change does not enter the report at this stage (although it will be used later). However, you can print out a draft copy of the table at this stage to review while entering text under the ‘Section’ section (it may be easiest to present in landscape form.
- See the Grey ‘Case Study’ tab for some examples
Case Study 1
Seaforth River Terminal - Mersey Estuary UK
In terms of habitat loss, the Phase 1 reclamation will cover an undesignated intertidal area of approximately 12ha (to Chart Datum). The reclamation and will take a maximum of 2½ years to complete (two construction approaches are identified one of which includes piling). A berthing pocket would be dredged in front of the quay wall to permit continuous occupation by vessels of approximately 14.5m maximum draught. If the piling approach is pursued the capital dredge for the berthing pocket will be around 850,000m3 (and alternative ’caisson’ approach will need and engineering cut and therefore the excavation volumes will be higher. The total area proposed for the Phase 2 Approach Channel deepening is 3.83km2. The maximum depth of dredge across these areas will be 1.1m (to increase the navigable depth of channel from -6.9m CD to -8m CD) and the estimated volume of material to be extracted will be around 3.5million m3.
A lot of the changes from this reclamation and dredging work cannot be accurately quantified in advance of a detailed study. These include the physical process changes such as tidal propagation, hydrodynamic, sediment transport and generation of wind waves change. Hydrodynamic modelling of these components is during the scoping assessment and subsequent EIA work. In particular, this is needed to quantify as far as is possible the indirect effects on adjacent designated sites.
This modelling, expert advice and sediment quality data is also needed to understand the scale of impacts to water quality from the dredging activities. Similarly, vessel passage numbers and port-side infrastructure will also need to be clarified during the assessment process to inform impacts from ship waves, air emissions, light pollution.
Case Study 2
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