What this document is
Sets out the issues which are expected to be considered as part of the environmental impact assessment which will be carried out to allow us prepare the environmental statement.
Environmental Impact Assessment Process
An Environmental Statement will be submitted with the application for a Development Consent Order. To determine what is covered by the Environmental Impact Assessment (EIA), a scoping report was prepared, which is available through website. The Environmental Statement will report the findings of our Environmental Impact Assessment (EIA) and will be based on the outcome of the scoping exercise and further discussions held with stakeholders.
A Preliminary Environmental Information Report (PEIR) has been prepared which provides an initial statement on the main environmental information available, along with descriptions of the likely environmental effects and mitigation measures envisaged.
This note sets out the process through which potential effects on the environment are being assessed and a summary of the preliminary environmental information.
The Environmental Impact Assessment Process
An EIA is being undertaken to understand the likely significant environmental effects that the construction and operation of the replacement Energy Recovery Facility (ERF), as well as the demolition of the existing Energy from Waste (EfW) facility may have. It will also inform the design of the Project. The findings of the EIA will be recorded in an Environmental Statement (ES).
At Phase One consultation the EIA process was still in the early stages: environmental baseline conditions had been established and a scoping report had been submitted to the Planning Inspectorate.
The EIA scope has now been agreed and assessments which will be reported in the ES have begun. As part of this phase of consultation preliminary environment information emerging from these assessments is provided in the PEIR.
The EIA is being undertaken in part to avoid or reduce negative environmental effects and to also identify and promote positive effects. Environmental topics included are set out below.
Air quality and odour:
Dust emissions may result from demolition and construction-related activities. Control measures are defined in the draft Code of Construction Practice (CoCP). As a result, emissions will be negligible and not significant.
Vehicle emissions from construction and operation have been assessed. Effect on local air quality identified as not significant.
Emissions from chimney stack and odour from proposed ERF: Best practice and design measures would be applied to ensure effects from emissions and odour would be not significant. Preliminary findings of a human health risk assessment show no significant effects
Daylight, sunlight and overshadowing
Assessed to ensure that adequate conditions would be maintained around the site as well as open spaces. It was concluded that there would be no significant effects at nearby properties and open spaces due to the distance from these to the proposed buildings on the Edmonton EcoPark site.
EcoPark House has also been assessed. The south and east sides of this building would have open vistas, ensuring adequate lighting. The west side would face the existing EfW facility, but is at sufficient distance to ensure that adequate daylight and sunlight would be achieved as long as windows are sized appropriately.
The draft CoCP details measures which would prevent effects on ecology arising from the Project’s construction and demolition works. Additional measures during construction to prevent adverse effects would include landscape reinstatement and enhancement in the Lee Valley Site of Metropolitan Importance for Nature Conservation.
During Project operation, lighting has the potential to affect habitats close to the site. However, the lighting strategy would generally avoid and minimise light pollution of protected habitats so effects would be not significant.
This assessment considers the wind effects of the Project on pedestrians in terms of their comfort and safety on the site and in adjacent areas. Particular focus has been given to leisure uses to the east of the site, including around EcoPark House by the Edmonton Sea Cadets.
The assessment concluded that there would be no significant effects on environmental wind as a result of the Project on areas outside of the site boundary.
On the Edmonton EcoPark site itself, the potential for poor wind conditions at three locations where pedestrian paths pass the proposed ERF was noted. However, local design measures can be incorporated during the detailed design stage to ensure that the effects would be not significant.
Ground conditions and contamination
An assessment has been undertaken of the effects on ground conditions due to the potential for contamination at the site. The potential for the Project to affect the water quality of groundwater beneath the site and in the adjacent Salmon’s Brook have been assessed in particular.
Measures have been set out in the draft CoCP to ensure that groundwater would not be affected and that building works such as deep foundations do not introduce routes through the ground which may lead to pollution of groundwater. For this reason, the location of the bunker has been specifically selected to avoid this risk by placing it in the area with the greatest thickness of London Clay, which acts as a barrier protecting the groundwater.
As the Project progresses, the detail of the design and control measures will continue to be discussed with the Environment Agency to ensure that the measures remain suitable and appropriate.
With the implementation of the above measures, there would be no significant negative effects relating to ground conditions and contamination.
Noise and Vibration
Demolition and construction-related activities associated with the Project have been considered in terms of their potential to result in construction noise or vibration effects at nearby sensitive (residential) properties. This concluded that due to the distance of properties potentially sensitive to noise and vibration from demolition and construction activities, noise levels would be within specified noise criteria, and there would be no potential for negative impacts from vibration.
Noise from traffic associated with all phases of construction and operation would not be perceptible and therefore not significant.
The proposed ERF is being designed to comply with noise limits set out in national standards. The effects of noise from the operation of the industrial plant would therefore be controlled so would be not significant.
This assessment considered the effects of the Project on local employment and the Edmonton Sea Cadets.
While the Sea Cadets would be temporarily relocated within the site while EcoPark House is constructed, this temporary disruption to their access to the water is considered to be significant. Once relocated into EcoPark House, the Sea Cadets would be provided with improved facilities that include a launch into the River Lee Navigation. EcoPark House could also be used for other community uses.
Construction employment associated with the Project would generate approximately 1,980 full-time jobs across the UK, about 990 of these would be local. The employment benefits from construction would therefore be a significant benefit.
Once the replacement facility is fully operational, there would be a reduction in on-site employment but this is unlikely to substantially change the level of employment in the local area from current conditions. The effects are therefore considered to be not significant.
This considers the effects of the Project on road users, public transport users, pedestrians, cyclists and equestrians in the vicinity of the site. Effects on these groups during each phase of the Project has been assessed, taking account of both construction and operation vehicle movements generated and the entrance points to the site that would be used. Both temporary and permanent effects are therefore considered.
While the Project would increase traffic on the local road network and there would be increased passenger numbers on local public transport, with the measures set out in the draft CoCP, all effects are considered to be not significant.
The effects of the Project on views to and across the Edmonton EcoPark have been assessed. The Project has been designed to minimise the perceived size and shape of the ERF and reduce its visual impact.
Construction would give rise to significant negative effects. These would occur on views both close to and at a distance from the site where the construction works would be visible. Effects would, however, be temporary in nature.
The ERF would be noticeably larger than the existing buildings on the site and neighbouring industrial units. It would therefore give rise to significant adverse effects on views from a number of locations in which it would be seen as increasing the bulk and mass on the Edmonton EcoPark. These effects would be most pronounced upon completing construction of the proposed ERF but prior to the demolition of the existing EfW, when both the proposed ERF and existing EfW would be present on the site.
The decommissioning of the existing EfW facility would require works that would significantly affect some views to and across the site. However, the proposed ERF would screen these works from view from a number of locations.
Following the removal of the EfW facility, the visibility of the ERF would be reduced in comparison to the EfW. In particular the material colour and shape of the stack would make it less visible on the skyline than the existing stack. This has been assessed as a beneficial effect, but not significantly so.
In relation to the significant negative effects that would arise from the necessary scale of the works and the structures that form the Project, there are no measures that can be applied to reduce the effects.
Water resources and flood risk
This looks at effects on flood risk, groundwater flows, pollution of water bodies and demands
for water supply and wastewater disposal. During construction, measures set out in the draft CoCP would ensure that there would be no significant effects.
The Project design takes into account drainage requirements from the site to ensure that it would not give rise to increased flood risk. In addition, an Operation Management Plan would be developed to ensure that activities on the site would not affect water quality.
Two options are under consideration for cooling at the proposed ERF. The water requirements (taken from Salmon’s Brook) of each varies with resultant effects ranging from significant positive to significant negative.
The amount of mains water required at the site would also increase but in the context of London water availability, this would not be significant. Additionally, rainwater harvesting and other water efficiency measures would be implemented to reduce water demands.
Want to know more?
EIA Scoping Report
Preliminary Environmental Information Report (PEIR)