|Receptor||Monitoring Program Description
||Design and Methods
Multi-beam bathymetric surveys and side-scan sonar to monitor broad scale changes within Swansea Bay
Multi-beam bathymetric and side scan sonar surveys will be used to detect any broad scale changes in bathymetry as a result of the project. The area offshore between Mumbles Head and Sker Point, extending to the offshore disposal grounds will form the extent of the wider study area. Prior to construction, data from 2017 UKHO surveys of this area will be supplemented by site specific survey to provide coverage across the whole area. A 100m line spacing will be used across sensitive receptors and 200m line spacing elsewhere. Targeted surveys will be then be undertaken in year 3 of marine construction and years 1, 5 and 10 operation. Data will be reported and reviewed through the AEMP process.
Fixed point photographic record along the lagoon walls
Photographic record at fixed points, of 100m spacing, along the external faces of the western and eastern lagoon walls, and the internal face of the eastern lagoon wall will be undertaken. The photographs are to observe potential erosion or accretion of sediment in the immediate areas of the structure and to provide a visual record of any changes observed. The photography is not meant to be a quantitative assessment, but provides a qualitative record of changes as the lagoon wall is constructed and over the years of operation which can be used to inform the assessment of intertidal changes and associated effects on sensitive receptors identified, including adjacent to Crymlyn Burrows SSSI where the potential for accretion of sediment was predicted along the external eastern lagoon wall.
Photographs to be taken in both the spring and autumn during the marine construction period. Repeat photographs will be taken spring and autumn post-construction for the first five years of operation, to monitor any changes in sediment accretion/erosion. If notable adverse weather occurs such as high intensity storms, additional photographic records will be taken, as considered necessary, by the lagoon operators to inform lagoon maintenance activity. Photographs will be taken from the top of the lagoon wall facing out to sea or into the lagoon (eastern breakwater). At each location three photos will be taken to provide left, right and seaward or lagoon shots.
The photographic record will be analysed and reported to NRW, CCSC and NPTCBC on an annual basis, through the AEMP process.
Bathymetric surveys and Argus silt meter to monitor siltation within the lagoon
The ES for the Project predicted that during operation, sedimentation will occur within the Lagoon footprint, as a result of water being held within the lagoon to allow generation. The objective of the surveys is to monitor extent and rates of sedimentation within the lagoon footprint, to increase understanding of lagoon operation, to provide evidence and advice on operational procedures and to inform fleet lagoon developments.
A multibeam echosounder bathymetric survey will be undertaken of the lagoon footprint immediately following completion of lagoon construction ‘out survey’. The survey will be undertaken by the appointed contractor to provide an updated construction baseline.
Surveys within the operational lagoon are proposed annually for the first three years of operation, with the frequency to be reviewed thereafter to tie in with anticipated maintenance regime as determined by the operators of the lagoon.
An Argus Silt Meter will be deployed to measure deposition/turbidity profiles within the lagoon. The survey will be carried out during year 1 of operation.
Monitoring changes in the intertidal area using beach profiles, Rapid Geomorphological Assessment (RGA) and sediments
Historically beach profiles within Swansea Bay have been monitored by Swansea and Carmarthen Bay Coastal Engineering Group (SCBCEG) either once or twice a year. A high level overview of existing data gathered by SCBCEG for the sites within Swansea Bay between Mumbles and Kenfig Burrows was undertaken for the EIA. Subsequent to this, detailed analysis of historic data has been carried out by University of Wales Trinity St David's (UWTSD) on behalf of TLSB, to determine recorded variation at each profile. A software has been developed by UWTSD, such that future beach level data can easily be compared against the historic data to detect change outside that previously recorded.
In autumn 2015 TLSB commissioned a pilot survey of the sites and subsequently commenced annual monitoring of 31 sites in Spring 2016. The results of the annual surveys and analysis will be contained in the AEMP Annual Monitoring Report. Where appropriate the annual report will make recommendation for beach management.
Annual targeted sediment samples have also been included in the beach monitoring surveys. PSA data is classified according to Folk (1954) and any changes in classification over the years will be reviewed.
Finally, RGA will be undertaken along dune frontage where present.
Data from the coastal process monitoring will also be reviewed in combination with data collected from other subject areas such as marine ecology, coastal birds and coastal ecology and the results will be reported through the AEMP process.
High resolution aerial survey
Initial high resolution aerial survey between Mumbles Head and Sker Point was undertaken in Autumn 2014. Further high-resolution aerial survey data of the coastal zone in Swansea Bay using a photogrammetric-grade, multispectral camera will be acquired prior to construction. Data from this survey will provide information on potential changes in substrate distribution, broad scale beach changes (movement of sandbars), intertidal habitats and beach profiles.
Further surveys will then be undertaken in year 3 of marine construction and year 1 and 5 of operation. Data will be reported in the relevant survey year and will be reviewed through the AEMP process.
Wave reflection and currents
It is proposed that Nortek Acoustic Wave and Current (AWAC) devices will be deployed at
two locations over three months in the winter in the first year of lagoon operation. The AWAC devices will collect data on waves, water levels, current profiles and suspended sediment (acoustic backscatter), combined with Optical Back Scatter (OBS) for suspended sediment (turbidity). The devices will be deployed to obtain three months of oceanographic field data at two locations in the first year of operation. Site 2 is located within the lagoon footprint. Site 1 is to be re-positioned in the west of Swansea Bay to examine residual flows in this area.
Currents from turbines and sluice gates
Data will be collected across the turbine and sluice gate housing structure to provide spatial current data using a vessel mounted Acoustic Doppler Current Profiler (ADCP).
The survey will focus on three identified survey areas:
a) Inside the lagoon focusing on the inlet;
b) Inside the lagoon looking at the general flow pattern; and
c) Outside lagoon flows.
Surveys will be undertaken over a flood – ebb tidal cycle once on a spring tide and once on a neap tide. This would provide spatial current data as opposed to fixed point temporal data which is collected by the AWAC deployments. The spatial ADCP survey could also be used to provide more detailed information on flow patterns within the lagoon as a whole, as well as to measure backscatter intensity, which would provide an indication of turbidity in the water column.
Bacteriological water quality within the lagoon.
With the proposed extension of the DCWW Waste Water Treatment Works LSO to discharge outside of the lagoon, the key bacterial load into the lagoon will be removed and 'excellent' water quality (as defined by the BWD, 2006) is predicted within the impounded area. This monitoring will confirm whether this ‘excellent’ water quality has been achieved and the routine data will be used to inform and manage uses within the lagoon.
Lagoon tidal cycle bacterial monitoring (Faecal indicator organisms, FIO) - during operation, water quality samples will be taken at hourly intervals over a full tidal cycle (13 hours). The survey will be repeated for dry weather and wet weather conditions and over spring and neap tides in summer and winter, for the first year of operation.
Routine water quality sampling in lagoon - during operation, water quality samples taken at fortnightly intervals between 1 October and 14 May, and then weekly in the bathing season (as set out within the revised BWD), from 15 May to 30 September, for the first year of operation. Depending on monitoring results and future use of the lagoon as a bathing water, ongoing surveys will only be undertaken within the bathing season (from 15 May to 30 September).
Nutrient levels within the Neath Estuary, Tawe Estuary and Swansea Bay; and to monitor chlorophyll levels within the Lagoon
The primary reasons for the monitoring are three fold:
1) to monitor the nutrient levels within the Neath and Tawe Estuaries during pre-construction, construction and operation and within Swansea Bay once the lagoon is operational;
2) to monitor Chlorophyll levels within the lagoon once operational; and
3) to inform and validate the WFD compliance assessment.
Dissolved Inorganic Nitrogen (DIN) sampling commenced within the Neath and Tawe estuaries during July 2015. Data on temperature, conductivity, salinity, dissolved oxygen and turbidity was also recorded. Sampling is undertaken monthly pre-construction. Sampling will also be undertaken monthly during offshore construction and the first two years of operation. A sample will be collected at the western extent of the lagoon, outside of the breakwater, once the Project is operational.
Chlorophyll will be also sampled within the lagoon at three inshore monitoring locations, monthly for the first two years of operation. Results will be reported within the project AEMP.
Surveys of seawalls – to monitor colonisation of the lagoon breakwater, the success of intertidal biodiversity offsetting measures and the presence of invasive species
Intertidal and subtidal transect, quadrat, rocky shore, rockpool and UAV (drone) surveys
will be undertaken on the lagoon breakwater and intertidal areas within the lagoon footprint (including translocation and biodiversity offsetting measures). In addition, intertidal and subtidal transect and quadrat surveys by drop down camera will be undertaken of the lagoon breakwater and biodiversity offsetting measures.
Surveys will be undertaken each spring and autumn during marine construction commencing in the first spring or autumn after the placement of each offsetting measure (and during summer for the S. alveolata UAV surveys). During operation, surveys will be undertaken spring and autumn each year for the first three years.
Results of any marine INNS monitoring will be reported to inform the Marine Biosecurity Risk Assessment (MBRA). Transects will be located along the internal sections of the breakwater, however, where feasible, external transects will also be established where health and safety considerations allow. Control (reference) sites will also be monitored to examine natural variation. Surveys will also consider rocky shore macroalgae in accordance with WFD-UKTAG (2014) guidance and a taxon list for macroalgal species will be recorded.
Monitoring will be undertaken of the Port and Tawe Sabellaria alveolata reefs within Swansea Bay. a range of baseline surveys will initially be undertaken as follows:
Reef UAV (drone) surveys: high resolution aerial imagery and topographical data will be collected to establish a baseline of the Tawe and Port reefs (and the reference reefs Afan, Dunraven and Porthcawl) as well as establishing the distribution of each reef formation across each reef.
Reef quadrat and core sampling surveys: Rapid assessment (presence/absence) of the key epifaunal species associated with S. alveolata reef set out in the SAC Regulation 33(2) Advice document (Natural England and Countryside Council for Wales, 2009), and adapted based on the Site Characterisation survey findings, will be undertaken prior to construction. Quadrat surveys as well as collection of a series of small cores (5 cm in diameter) at 3 locations within each reef category on each reef will be used to determine the average number of live S. alveolata worms and associated infaunal assemblages within each reef formation and health category.
Water sampling survey – plankton larvae and water quality (food): Baseline monitoring of S. alveolata plankton larvae within the water column has been undertaken (May 2016 – May 2017).
Drone surveys and reef quadrat and core sampling surveys will be repeated throughout marine construction and for the first 3 years of operation at the Port and Tawe reefs and at the reference reefs:
Water sampling survey – larval supply and water quality (food) surveys will be undertaken monthly in Year 2 of operation.
Targeted oyster dredge trawls within the footprint of the lagoon will be undertaken prior to marine construction. These works will form part of the marine contract package for the construction of the Lagoon. Any native oyster collected will be transferred to a safe location for the duration of construction. Once the lagoon is complete the oysters will be relocated.
The successful production of offspring from oysters is affected by many variables, including site specific factors and the condition of the oysters. As such the oyster enhancement programme will be adapted.
The production of spat in hatcheries is a well-documented process. However, the physiological condition of oysters differs and the process has to be trialled and optimised. The preliminary aim is to stock 3-5 discrete areas inside the Lagoon with oysters from spatting ponds introduced and/or a hatchery. The exact location depends on sediment and hydrodynamic conditions within the lagoon. It is anticipated that there will be suitable subtidal areas, but possibly also intertidal areas; in Swansea Bay native oysters are naturally found in lower intertidal areas, although in low numbers.
The growth and survival of oysters inside the lagoon will be monitored and recorded. The extent to which the created oyster reefs support biodiversity compared with other habitats will be assessed.
Broadscale changes in intertidal marine ecology
Following the high resolution aerial survey an intertidal biotope map will be produced using the aerial imagery. Subsequent to this intertidal benthic ecology surveys will be undertaken to ground-truth the aerial imagery between February to June (inclusive) prior to marine construction, and in years 1 and 5 of operation.
In addition, walkover surveys will be undertaken to identify any presence of opportunistic macroalgae and algal mats in the western part of Swansea Bay. Walkover surveys will be undertaken in the first three years of operation in year 5 operation.
Benthic surveys to monitor broad scale changes in subtidal ecology within Swansea Bay
Baseline subtidal benthic surveys will be undertaken inside and outside the lagoon footprint within Swansea Bay, prior to marine construction and then ongoing subtidal benthic sampling surveys are proposed in year 1 and 5 of lagoon operation. The surveys are to be conducted between February and June (inclusive) of the relevant year.
The sampling sites have been positioned to provide representative samples from the key substrates and habitats present in line with a Before-After-Control-Impact (BACI) approach, and based on the primary and secondary impact zones of the Project as recommended by Ware and Kenny (2011).
Analysis of the samples will follow WFD-UKTAG (2014) guidance, with the samples collected during the sampling campaigns being sieved through a 1mm mesh. Within the lagoon footprint where finer sediments may be expected, a 0.5mm mesh will also be used together with the 1mm mesh. The need for on‐going double sieving of samples within the lagoon footprint will then be reviewed as part of the AEMP review process. The findings will be analysed together with the results of the coastal processes studies to examine the effects of the Project.
Native and marine INNS will also be recorded through the above surveys and reported through the project AEMP process.
Fish surveys to monitor any broad-scale changes in fish fauna assemblage within Swansea Bay and gain an understanding of the fish diversity associated with the breakwater.
The ES predicted that the lagoon may have an effect on fish populations in Swansea Bay, primarily through habitat modification and potential changes to bed composition, as a result of changes to the hydraulic regime. This could lead to broad-scale changes in fish assemblages. The ES also reported that the lagoon breakwater will introduce rocky reef habitat which may increase fish and shellfish biodiversity, potentially improving ecological and ecosystem diversity within Swansea Bay post construction.
Intertidal and subtidal fish baseline surveys have been undertaken in autumn 2015 and autumn 2016 and will be repeated in the autumn prior to marine construction.
The methodologies and sampling locations used for the pre-construction surveys are the same as those used for the EIA.
The intertidal and subtidal fish surveys would be repeated in the autumn during operation. The surveys would commence when the intertidal and subtidal benthic ecology reaches an equilibrium status, following marine construction and early operation. The surveys which will take place over an approximately 5-year period, aim to gather data to detect any broad-scale changes post-construction with sufficient confidence and power levels.
Drop down camera surveys are also proposed to be undertaken during the operation of the Project, to record fish associated with the lagoon wall, and where possible to identify behaviours that occur as a result of the structure, to inform fleet lagoon projects. Drop down camera surveys will be undertaken as part of marine ecology surveys. In addition to this survey, data collected from anglers using the lagoon wall will be recorded where possible. Angling catch data would be utilised to further understand fish population diversity within the vicinity of the lagoon, such data would inform a qualitative view in terms of species present and the identification of any new species to the area.
The provision of spawning media on the foot of the Western landfall was proposed within the ES to provide further diversity of spawning habitat and to mitigate the potential losses under the lagoon wall. With consideration of the application of such mitigation measures, the ES concluded impacts would be not significant. The ES also concluded that the breakwaters of the lagoon would provide a range of suitable spawning habitat which would be available for any spawning herring following construction of the Project and this was considered a potential positive impact of the Project. However, to confirm the implementation of the mitigation, targeted surveys are proposed.
Baseline ichthyoplankton Monitoring Trawls have been undertaken February to April 2015, February to April 2016 and January to April 2017. To date no evidence of herring spawning within the bay has been recorded. Survey will also be undertaken February to April in year 2 of operation. If herring larvae are recorded in any samples, the location of herring spawning will be determined using the Langrangian particle tracking model.
In addition, intertidal and subtidal transect and quadrat surveys will be undertaken by drop-down camera. The surveys will be of the lagoon seawall and targeted surveys of biodiversity offsetting measures. The drop down camera survey will be undertaken to examine the condition (presence and extent) of the herring spawning media provided. The presence of any herring in the vicinity of the media will also be recorded for information.
Surveys in development
Further fish monitoring proposals are in development in consultation with the relevant advisors associated with the project Marine Licence determination. These surveys are likely to include but will not be limited to:
- Monitoring in the vicinity of the turbine house and sluice gates
- Fish telemetry studies
- Monitoring of migratory species in rivers
This section will therefore be updated once this process is completed.
Angling catch data would be utilised to further understand fish population diversity within the vicinity of the lagoon. Data would inform a qualitative view in terms of species present and the identification of any new species to the area.
In addition, it is proposed to hold angling competitions and for information about fishing effort and fish caught e.g. numbers, species, size, etc. to be recorded.
Harbour porpoise usage surveys
A long-term acoustic monitoring programme for harbour porpoises has being established in the proposed Lagoon footprint and the wider Swansea Bay area. These surveys commenced in 2014, to examine the use of Swansea Bay by harbour porpoises, and to determine if there are any seasonal patterns to usage.
Baseline data using C-PODs has been collected at up to six sites within Swansea Bay since February 2014. The data collected from the CPODs were discussed and reviewed with NRW(A) in July 2015 and the layout revised to allow monitoring over a gradient at increasing distances from the source of potential impacts. The on-going baseline monitoring comprises the deployment of four C-PODs at the following locations: Mumbles Head, DCWW outfall extension, Kenfig Patches and Scarweather Sands.
The surveillance data collected will be used to understand variability in site usage by harbour porpoise while taking into account factors such as time of day, time of year, tidal state and phase of the Project. Interim reports will be prepared following each CPOD deployment period (approximately 3-4 monthly) summarising the data collected.
In depth analysis of the data will take place at the end of each phase of the Project, i.e. pre-construction, construction and at intervals throughout operation. These will include information on harbour porpoise trends in use of the area (for example in relation to time of day or tide) and include comparisons between deployment locations, periods and phases of the Project.
Monitoring will continue during construction and operation. The results of the surveys will be reported through the project AEMP process and will be used to inform the subsequent monitoring strategies.
Monitoring marine mammal interaction with the turbine house/sluice gate structures
The purpose of the monitoring is to record marine mammal presence in close proximity to the turbine and sluice gate housing structure, and if required, to verify the effectiveness of Acoustic deterrent devices (ADDs) or Acoustic Startle Response systems (ASRs) in reducing marine mammal presence in close proximity to the turbine and sluice gate housing structure and to also to reduce the risk of entrapment within the lagoon.
Review of potential monitoring and mitigation systems for marine mammals has been undertaken and the use of a detect and deter system utilising active tracking such as sonar, in combination with Acoustic Deterrent Devices (ADD) or Acoustic Startle Response systems (ASRs) was identified as a potential monitoring system for the Project. Turbine monitoring is necessarily adaptive and will therefore be managed through the AEMP as set out within this Objective.
The need and type of monitoring system required will continue to be developed in consultation with relevant advisors taking into consideration: Research into other deployed marine renewable devices now and in the future and their effects on marine mammals. Additional research and development into detect and deter systems that will be suitable for use for the Project will also be reviewed and this will include any updates to designs of the devices, development of detection and deterrent systems, appropriate field trials and installation requirements on the Project, to ensure that they will be an effective form of mitigation; and noise data for Project specific turbines.
Discussions are ongoing with relevant advisors regarding the final operational monitoring system and this will be established and agreed prior to operation of the Project.
Marine noise monitoring
Mitigation proposals for impact piling are described fully in Chapter 23 of the ES. These include the use of the JNCC (2010) protocol for piling activities (soft start procedure) if impact piling is required, the presence of a Marine Mammal Observer and the use of passive acoustic monitoring.
The primary reasons for monitoring are as follows:
- To collect construction noise data primarily for percussive piling to increase knowledge of marine noise associated with construction of tidal lagoon projects and more generally, for marine developments; and
- To collect marine noise data generated from variable speed turbines to inform other objectives, within the Project AEMP, and to increase knowledge for fleet tidal lagoon projects.
Marine noise data will be collected and compared with the values used within the ES for construction plant and activities, and the operational turbines.
Baseline underwater noise measurements undertaken in April 2013 at five locations around Swansea Bay for the Project EIA. Monitoring of construction-related sound emissions for percussive piling will be undertaken. Surveys will also consider noise arising from dredging works and rock armour placement activities. During operation, noise monitoring of the bulb turbines at varying distances will be undertaken with data collected across the tidal operating regime.
High tide and low tide counts
The primary reason for surveys are as follows:
To qualitatively understand potential changes in bird numbers and any possible re-distribution within Swansea Bay as a result of the Project, with particular focus on sanderling and ringed plover features of Blackpill SSSI; and to understand potential links between changes in beach habitat, intertidal biotopes and numbers of sanderling and ringed plover in the Bay, with particular focus on Blackpill SSSI. As such a programme of surveys has been developed to further understand bird numbers and distribution within the Bay, with particular focus on sanderling and ringed plover.
Baseline surveys include:
· WeBS style mid-tide counts – over passage period and winter period, August 2014 to May 2015 and from August 2015 to May 2016;
· High-tide (core) and Low-tide WeBS counts - over passage period and winter period, August 2014 to May 2015 and from August 2015 to May 2016;
· Over-wintering High-tide (core) WeBS count and Low-tide WeBS counts completed on a monthly basis (October 2011 – March 2012, September 2012 – March 2013). Additional surveys carried out in the east of the survey area (between the River Tawe and River Neath) in the summer of 2013 (April-August 2013). The 2014/15 surveys covered the same area as that undertaken for the ES i.e. from Mumbles Head round to Baglan Bay. The 2015/16 survey area was extended to cover Aberafan Sands, in particular to assess the use of the habitat by sanderling, which have been regularly recorded in numbers of national importance in other areas of Swansea Bay.
The following surveys will be undertaken during construction and operation:
High-tide (core) and Low-tide WeBS counts – Monthly over the passage and winter period every other year during construction, starting during (terrestrial) construction. All surveys to cover the existing WeBS count sectors (in line with ES) and to be extended to include Aberafan Sands; and
High-tide (core) and Low-tide WeBS counts – Monthly over the passage and winter period during operation in years 1, 3, 5, 7 and 10. All surveys to cover the existing WeBS count sectors (in line with ES) and to be extended to include Aberafan Sands.
Monitoring of the frontal dune system of Crymlyn Burrows SSSI
The frontal dune system of Crymlyn Burrows SSSI will be monitored to understand if any changes to habitat condition or extent can be linked to the Project through associated changes in coastal processes. Information gathered will be used to inform decisions over management practices of the SSSI dune frontage and management of the artificial dune system created within the Project footprint.
A frontal dune survey undertaken in June 2015 provides a detailed baseline survey. During the frontal dune survey vegetation mapping, fixed transects and quadrat data will be collected. Other features such as notable plants, invasive species and strandline invertebrates will be recorded where present. The survey will be repeated in late spring/early summer prior to marine construction of the western breakwater.
A further survey will be undertaken prior to construction of the eastern breakwater with further surveys undertaken in years 1, 3, 5, 7 and 10 of operation (after which a substantive review will be undertaken). Surveys to be undertaken during late spring/early summer. Coastal process survey results will inform the review of data and data will be reported through the AEMP process.
Monitoring dune systems of Swansea Bay Site of Importance for Nature Conservation (SINC)
An initial baseline dune condition survey (vegetation mapping, fixed quadrats, and recording of other features) was undertaken in June 2015. The survey will be repeated in late spring/early summer prior to marine construction. Beach level and RGA data for the area will be reviewed. Further dune condition surveys will be undertaken in the event that the data review indicates erosion/stabilisation of dune frontage outside natural variation.
Surveillance of habitat creation areas within the lagoon
Surveillance of features created within the lagoon will commence in the year following completion of the construction of the habitats or in year 1 of operation, whichever is sooner. Surveys include:
· Vegetation and habitat condition surveys of new habitat to determine colonisation and eventual condition of the habitats in the year following completion of the construction of the habitats or in year 1 of operation, whichever is sooner, then in years 1 (if required), 3, 5, 7 and 10 of operation (when a substantive review will take place).
· Terrestrial invertebrate surveys of the created coastal grassland and dune habitats at a frequency determined by the suitability of the habitats to support invertebrates. These surveys will commence in the year following completion of the construction of the habitats or in year 1 of operation, whichever is sooner, then in year 1 of operation (if required) and repeated in years 3, 5, 7 and 10;
· Strandline invertebrate surveys of new beach along the beach creation area at the same frequency of the terrestrial invertebrate surveys; and
Reptile surveys between April and October in years 5, 7 and 10 of operation of the restored/created grassland habitats after which a substantive review will take place.
In order to confirm the continued use of foraging habitat by bats, it is proposed that remote bat detectors (anabats) are deployed for at least a week duration, bi-annually (between May and September), for three years post-construction. In addition, use of the lagoon wall by foraging bats could also be determined over the same time period using a hand-held bat detector.
Proposed mitigation measures to ensure potential impact to Otters is minimised include avoidance of light spill onto open water of the docks and exclusion of high risk construction areas whilst maintaining access for Otters between the docks estate and coastline. These proposals will require monitoring during the construction phase.
|Reports and Papers
Adaptive Environmental Monitoring Programme, 2014.
The Adaptive Environmental Management Plan, is a live document designed to monitor the project and its interactions with the environment throughout its 120 year generating life. Since the close of the examination and DCO Consent the document has been updated in consultation with relevant statutory advisors. The information contained within this datasheet reflects the latest position. However, there is potential for the monitoring surveys listed within these sections to change and the text provided does not represent the final text. Currently it is anticipated that the final AEMP will be formally submitted in January 2018.