WD3 9YD, Bouygues Travaux Publics, Sir Robert McAlpine Ltd and VolkerFitzpatrick Limited: environmental permit application advertisement - EPR/QB3092NR/V004
Published 12 January 2023
Applies to England
© Crown copyright 2023
This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated. To view this licence, visit nationalarchives.gov.uk/doc/open-government-licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: psi@nationalarchives.gov.uk.
Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concerned.
This publication is available at https://www.gov.uk/government/publications/wd3-9yd-bouygues-travaux-publics-sir-robert-mcalpine-ltd-and-volkerfitzpatrick-limited-environmental-permit-application-advertisement-eprqb3092n/wd3-9yd-bouygues-travaux-publics-sir-robert-mcalpine-ltd-and-volkerfitzpatrick-limited-environmental-permit-application-advertisement-eprqb3092n
Details of the application
The Environment Agency has received a variation application for an environmental permit under the Environmental Permitting (England and Wales) Regulations 2016 from Bouygues Travaux Publics.
Application number
EPR/QB3092NR/V004
Regulated facility type
Other
Regulated facility address
Chiltern Tunnel Southern Portal
Chalfont Lane
West Hyde
Rickmansworth
Hertfordshire
WD3 9YD
National grid reference discharge point
TQ 03250 90910
Receiving environment
Tributary of the River Colne
Effluent type
Trade effluent
Volume
The proposed variation is to transfer effluent from collection ponds at the construction sites located at Chalfont St Peter shaft, Chalfont St Giles shaft, Amersham shaft, Little Missenden shaft, Chesham Road shaft and North Portal to storage ponds at the South Portal compound and to treat this using the existing permitted wastewater treatment plant (WTP). In addition, the variation includes collection and treatment of contaminated runoff water from a chalk stockpile at the southern end of the viaduct which would be pumped to the WTP along the pipe used for dewatered cofferdam effluent at the viaduct and which is already included in the WTP permit. The additional effluent transfer would be temporary and intermittent with the volume depending upon incident rainfall and construction activities. Attenuation of the additional effluent inputs would be by the WTP ponds and at the additional sites where storage ponds have been constructed. If the WTP at South Portal is likely to reach capacity (e.g. weather forecast predicts extended period of high rainfall) effluent would be retained at the additional construction sites rather than being transferred to the WTP at South Portal. If necessary, short term tankering to off-site treatment works from the additional sites would continue to be undertaken to manage excess effluent. There would be no changes to the WTP, operating techniques, storage ponds, emissions or discharge points at the South Portal with all effluent being managed through the existing plant and existing discharge limit.
How to view the application
Please contact us via e-mail at psc-waterquality@environment-agency.gov.uk or contact us on 03708 506 506 to arrange to see the application documents.
How to comment on the application
If you have any comments on the application send these by 9 February 2023. You can comment:
Via email: psc-waterquality@environment-agency.gov.uk
For advice about how to make a representation or if you are unable to make a representation via e-mail please call 03708 506 506.
The Environment Agency will normally put any comments it receives on the public register. This includes your name but not your personal contact details. Please tell us if you do not want your response to be public.
The privacy notice for permit applicants/operators can be viewed at https://www.gov.uk/guidance/environmental-permits-privacy-notice