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Environment Agency

Environment Agency

Notice ID: MF0248283

Notice effective from
21st November 2017 to 21st December 2017

Application for a variation of an environmental permit under the Environmental Permitting (England and Wales) Regulations 2016
We've received applications to vary a permit from NNB Generation Company (HPC) Limited. Type of regulated facility: Water Management Zones and effluent treatment units
Address of regulated facility: Construction site at Hinkley Point C power station, Near Bridgwater, Somerset, TA5 1UD Receiving environment: Severn Estuary Application number: EPR/JP3122GM/V006 Effluent type: Trade effluent consisting of pumped groundwater
Volume: 20 litres per second
The proposal is to vary the permit to reduce the volume of
groundwater discharged to the estuary, to discharge the
groundwater without treatment and vary the discharge point
from the foreshore outfall to a new outfall at the seaward
end of a temporary jetty.
Application number: EPR/JP3122GM/V007
Effluent type: Trade effluent consisting of tunnelling effluent
and muck bay drainage
Volume: 30 litres per second plus rainfall dependent surface water runoff
The proposal is to vary the permit to include the discharge of tunnelling effluent & muck bay drainage via a new outfall at the seaward end of a temporary jetty. The tunnelling effluent will be generated through the construction of the power station cooling waters system tunnels. It will include groundwater and contain low concentrations of soil conditioning chemicals. The muck bay drainage will consist of leachate from the tunnelling spoil containing low concentrations of soil conditioning chemicals and low volumes of groundwater, as well as a rainfall dependant element of surface water runoff from the muck bay curtilage. This information is held in a register at the following location: The Environment Agency, EnvironmentAgency, Public Register, Rivers House East Quay, Bridgwater, TA6 4YS You can look at our register 9.30am-4.30pm, Monday to Friday Please phone the National Customer Contact Centre on 03708 506 506 to arrange an appointment. You may get a copy of documents on the register We may charge to cover copying costs.
If you have any comments send these by 19 December 2017.
Email: Online: view and comment on the applications using Citizen Space ta5-1ud-nnb-generation-company-hpc-limited-v006 ta5-1ud-nnb-generation-company-hpc-limited-v007 Or write to P&SC - WQ Team, Quadrant 2,99 Parkway Avenue, Sheffield, S9 4WF
Normally we must put any responses we receive on the public register Please tell us if you don't want your response to be public.
We must decide whether to grant or refuse the application. If we grant it, we must decide what conditions to include in the permit.


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