The Hinkley Point C (Nuclear Generating Station) Order 2013

3.  Requirements P1 to P26 relate to Work No. 1A(a) to (c) and apply in relation to the aspects of the authorised project to which they refer. For the purpose of requirements P1 to P26, the “site” refers to the limits of Work No. 1A as shown on sheet no. 2 and “development” refers to Work No. 1A(a) to (c) carried out pursuant to this Order.

(1) Reference No.	(2) Requirements
P1	Ecology: tree protection
	(1) No development shall commence until a plan has been submitted to and approved by West Somerset District Council that identifies the existing trees and hedgerows (or sections of hedgerows) to be retained on the site together with the type of fencing to be used and arrangements to be made in accordance with British Standard 5837:2005 to protect the retained trees and hedgerows (or sections of hedgerows). The plan shall be implemented in accordance with the approved details.
	(2) No retained tree or hedgerow (or section of hedgerow) shall be cut down, uprooted or destroyed, nor shall any retained tree or hedgerow (or section of hedgerow) be topped or lopped other than in accordance with the approved plans and particulars, without the approval of West Somerset District Council. Any topping or lopping approved shall be carried out in accordance with British Standard 5837:2005.
	(3) If any retained tree or hedgerow (or section of hedgerow) is removed, uprooted or destroyed or dies, another tree or replacement hedgerow (or section of hedgerow) shall be planted at the same place and that tree or hedgerow (or section of hedgerow) shall be of such size and species, and shall be planted at such time, as may be specified by West Somerset District Council.
P2	Ecology: wildlife mitigation measures – reptiles
	(1) The two haul road crossings of the Green Lane shall not be brought into use until design details of reptile crossings and associated fencing have been submitted to and approved by West Somerset District Council.
	(2) The reptile crossings and associated fencing shall remain in situ for the duration of the construction of Work No. 1A, unless otherwise approved by West Somerset District Council.
P3	Historic environment: excavation and recording of buried heritage assets
	Archaeological works relating to buried heritage assets shall be implemented from commencement of development in accordance with the Written Scheme of Investigation for Archaeological Mitigation, set out in the Environmental Statement (Volume 2, chapter 23, Ref 23.46) and results published in monograph form within ten years of commencement of the development.
P4	Historic environment: building recording
	The programme of archaeological works relating to the three existing barn structures (Benhole Barn; Langborough Barn; and Sidwell Barn) shall be implemented from commencement of development in accordance with the Written Scheme of Investigation for Historic Building Recording, set out in the Environmental Statement (Volume 2, chapter 23, Ref 23.48) and results published in monograph form within ten years of commencement of the development.
P5	Historic environment: recording of important hedgerows
	The programme of archaeological works relating to important hedgerows shall be implemented from commencement of development in accordance with the Written Scheme of Investigation for Archaeological Mitigation: Trenches through Green Lane and Historic Hedgerows, set out in the Environmental Statement (Volume 2, chapter 23, Ref 23.47). The results shall be published in monograph form within ten years of commencement of the development.
P6	Historic environment, ecology and landscape: Green Lane: preservation in situ
	The development shall not commence until a scheme showing the method of working which ensures the preservation in-situ of the Green Lane as shown on drawing HPCSPW025A Rev2: Tree and Hedgerow Retention and Removal has been submitted and approved by West Somerset District Council. The method of working shall be implemented as approved for the duration of the construction of Work No. 1A(a).
P7	Historic environment: monitoring of paleontological remains
	No development shall commence until a monitoring scheme has, following consultation with Somerset County Council Historic Environment Service, been submitted to and approved by West Somerset District Council, to ensure that any significant fossil finds are identified, removed, conserved and deposited with the Museum of Somerset. The scheme shall be implemented as approved, unless otherwise approved by West Somerset District Council.
P8	Historic environment: scheduled monument management plan
	(1) The development shall not commence until a monument management plan for Wick Barrow (SM No. 28) has, following consultation with English Heritage, been submitted to and approved by West Somerset District Council. The monument management plan is to include—
	(a)	investigation of the landscape in which the monument was constructed;
	(b)	excavation of earlier archaeological trenches and reinstatement of material;
	(c)	scrub management and husbandry;
	(d)	details of the timing and implementation of the removal of the existing road adjacent to Wick Barrow (following construction of the replacement road and roundabout) and details of the grassing over of the existing road land; and
	(e)	updating of information relating the barrow to the National Monument Record, Somerset County Council Historic Environment Record and production of display material (including virtual and illustrated material).
	(2) The monument management plan shall be implemented as approved during the construction of Work No. 1A, unless otherwise approved by West Somerset District Council.
P9	Drainage: oil interceptors
	Surface water drainage from impermeable parking areas and hardstanding for vehicles and lorry parks shall be passed through oil interceptors prior to being discharged to any watercourse, surface water sewer or soakaway system, unless otherwise approved by West Somerset District Council. The oil interceptors shall have a sufficient capacity for the areas being drained and shall be constructed prior to the first use of the parking areas or hardstanding and shall thereafter be retained throughout the construction of Work No. 1A. Roof water shall not pass through the oil interceptors.
P10	Surface water drainage
	(1) No development shall commence until details of the surface and foul water drainage system for that part (including means of pollution control, details of water management zones and a programme of construction and implementation) have, after consultation with the relevant drainage authority, been submitted to and approved by West Somerset District Council.
	(2) The details shall be in general accordance with figure A.1.6 of Appendix 2A of Volume 2 of the Environmental Statement and shall attenuate discharge to greenfield run-off rates.
	(3) The surface and foul water drainage system referred to in paragraph (1) shall be constructed, maintained and retained in accordance with the approved details, save to the extent MS30 indicates otherwise.
P11	Drainage: culvert of Holford stream
	(1) No development shall commence until details of the Holford Stream Culvert and/or infilling earthworks in the Holford Stream valley have been submitted to and approved by West Somerset District Council. The construction details for the culvert shall be in accordance with the concept details indicated on drawing HPCSPW011 Rev 1: Surface Water Drainage Holford Stream Culvert, unless otherwise approved by West Somerset District Council.
	(2) The construction details shall include details of the method of working (including the direction of working, measures for dealing with any flows in the watercourse, backfilling of the original channel, culvert foundations, compaction of fill around the culvert), demonstration of whether the proposed perforated land drains will be able to support the structural loading of the 12m of fill material and operate as intended for their design life, future ownership, maintenance and inspection (including of the proposed trash and security screen), repair, and operation of the culvert, and the full hydraulic design of the Holford Stream to demonstrate that there will be no loss of depth upstream or downstream during low flow conditions.
	(3) The culvert works to the Holford Stream shall be carried out in accordance with the approved details. The culvert works shall thereafter be retained for the duration of the authorised project.
P12	Flood Risk: Management Strategy
	No development shall occur until a flood risk management strategy has, after consultation with the Environment Agency, been submitted to and approved by West Somerset District Council.
P13	Geology and Contaminated Land: Contamination Risk Assessment and Implementation
	(1) No development shall commence until the following components of a scheme to deal with the risks associated with potential and known contamination of the site shall each have been submitted to and approved by West Somerset District Council. The scheme must ensure that the site will not qualify as contaminated land under Part IIA of the Environmental Protection Act 1990 in relation to the intended use of the land after remediation and must include—
	(a)	a preliminary risk assessment which identifies all previous uses of the site and surrounding land, potential contaminants associated with those uses and a conceptual model of the site indicating sources, pathways and receptors and potentially unacceptable risks arising from contamination at the site;
	(b)	a site investigation scheme, based on (a) to provide information for a detailed assessment of the risk to all receptors that may be affected, including those off site;
	(c)	an options appraisal and remediation strategy based upon the site investigation results and the detailed risk assessment in (b) giving full details of the remediation measures required and how they are to be undertaken;
	(d)	a verification plan providing details of the data that will be collected in order to demonstrate that the works set out in (c) are complete and identifying any requirements for longer-term monitoring of pollutant linkages, maintenance and arrangements for contingency action.
	(2) The scheme referred to in paragraph (1) shall be implemented as approved. Any changes to the scheme require the prior approval of West Somerset District Council.
	(3) West Somerset District Council shall be given two weeks prior written notification of commencement of the remediation works. Following completion of a measure identified in the approved remediation strategy, a verification report that demonstrates the effectiveness of the remediation must be produced and submitted to West Somerset District Council for approval prior to the commencement of any further development.
P14	Storage of Oils, Fuels, Concrete and Chemicals
	In the construction of Work No. 1A, any facilities for the storage of oils, fuels, concrete or chemicals shall be sited on an impervious base and either be graded to drain to a sump/collector or surrounded by impervious walls to form a bunded compound. The volume of the sump/collector or bunded compound shall be at least equivalent to the capacity of the storage tank plus 10%. All filling points, vents, gauges and sight glasses must be located on the impervious base and the drainage system shall be sealed with no discharge to any watercourse, land or underground strata. Associated pipe work must be located above ground and protected from accidental damage. All filling points and tank overflow pipe outlets must be designed to discharge into the sump/collector or bunded compound.
P15	Geology and Land Contamination: Spoil Mound Remediation
	Unless otherwise approved by the relevant planning authority, no development shall commence within the Built Development Area East (as shown on drawing number HP/MR/01 Rev A of planning permission reference 3/32/10/025 dated 13th January 2011 (issued by Somerset County Council)) until—
	(a)	remediation works in any defined area of the site pursuant to planning permission reference 3/32/10/025 dated 13th January 2011 (issued by Somerset County Council) have been completed to the satisfaction of the relevant planning authority and the validation report and completion certificate for that defined area have been submitted to and approved by the relevant planning authority; except
	(b)	within areas confirmed in writing by the relevant planning authority in which there is no known or identified contamination, whereby development can proceed subject to condition PW31.
P16	Geology and contaminated land: radiological monitoring
	(1) No development shall commence until a scheme for radiological monitoring of the land within a 30 metre radius of sample locations GB2 and TE312 specified on figure 15.19 (Volume 2 of the Environmental Statement) has been submitted to and approved by West Somerset District Council.
	(2) The radiological monitoring scheme shall be implemented in accordance with the approved details.
P17	Vegetation clearance
	(1) Before undertaking any vegetation clearance within the period from October to March inclusive, a Winter Clearance Scheme designed to avoid or reduce impacts on over-wintering birds which are interest features of the Severn Estuary SPA shall be submitted to and approved by West Somerset District Council.
	(2) Any vegetation clearance undertaken during the period October to March inclusive shall be carried out in accordance with the requirements of the Winter Clearance Scheme.
P18	Ecological Mitigation and Monitoring Plan
	(1) No development shall commence until an Ecological Mitigation and Monitoring Plan has been submitted to and approved by West Somerset District Council. The submitted details shall reflect the survey results and ecological mitigation and enhancement measures included in Volume 2, chapter 20 of the Environmental Statement and shall include details of—
	(a)	works for plant community development based on the National Vegetation Classification across the grasslands woodland and hedgerow habitats;
	(b)	the monitoring of invertebrates (butterflies and other indicator species);
	(c)	the scale and timing of habitat creation and enhancement works;
	(d)	the monitoring of bat activity;
	(e)	a scheme for the protection of badgers;
	(f)	bird counts to be undertaken on the site, and
	(g)	a timetable for implementation.
	(2) The Ecological Mitigation and Monitoring Plan shall be implemented as approved for the duration of the construction of Work No. 1A.
P19	Habitat Management Plan
	(1) No development shall commence until a Habitat Management Plan has been submitted to and approved by West Somerset District Council. The submitted details shall include all areas of habitats proposed to be retained or created and include information on proposals for the management and monitoring of retained features.
	(2) The Habitat Management Plan shall be implemented as approved.
P20	Transport: HGV emissions
	Unless otherwise agreed by West Somerset District Council, all HGVs to be used in the HPC construction works shall be of the Euro standard that is at least EURO IV. All HGVs to be used in the HPC construction works shall register on a database held by the undertaker but accessible to Somerset County Council, Sedgemoor District Council and West Somerset District Council.
P21	Engineering details of foreshore access road
	No works to construct the foreshore access road shall commence until engineering construction details for the road including any associated drainage works have been submitted to and approved by West Somerset District Council. The foreshore access road shall be removed on completion of construction of the offshore works, unless otherwise approved by West Somerset District Council.
P22	Access to foreshore
	(1) The foreshore access road shall not be brought into use until demarcations are in place to prevent the movement of vehicles and plant outside the works area/access corridor on intertidal habitats that form part of the designated features of the Severn Estuary European sites and SSSI.
	(2) Construction vehicles and plant shall not be permitted to have access to any other areas of the foreshore outside the works area/access corridor.
P23	Flooding: foreshore access
	The foreshore access road shall not be brought into use for any HPC construction works until flood warning notices have been erected in suitable and visible positions, such positions and wording of the signs to be approved by West Somerset District Council. The flood warning notices shall be retained throughout the period during which the foreshore access road is in place.
P24	Flooding / erosion: retaining wall
	No works to construct the temporary earthworks retaining wall on the cliff / foreshore shall commence until engineering construction details of the temporary earthworks retaining wall have been submitted to and approved by West Somerset District Council. The works shall be carried out and retained in accordance with the approved details.
P25	Landscape and visual: concrete batching plants
	Notwithstanding the provisions of the 1995 Order the concrete batching plants and associated integral silos to be constructed on the site shall be finished in a neutral colour and matt finish, unless otherwise approved by West Somerset District Council.
P26	General Permitted Development Order: sleeping accommodation
	Notwithstanding the provisions of Parts 4 and 5 of Schedule 2 to the 1995 Order, except in respect of Work No. 3, no part of the site shall be used for the stationing of sleeping accommodation for site workers, unless the approval of the relevant planning authority has first been obtained.