NOTE! THIS INFORMATION IS RETAINED FOR RECORD PURPOSES BUT IS NOT THE MOST UP TO DATE, AS IT HAS BEEN SUPERSEDED BY THE REGULATION 15 SUBMISSION, THE DOCUMENTS FOR WHICH ARE AVAILABLE HERE
Below you can find the individual policies from the June 2020 version of the Plan.
These are the most important part of the the Plan as they tell developers, Breckland planners, and anyone else wanting to build in Saham Toney the rules they must adhere to.
You can find the supporting text for each policy in the full version of the Plan HERE
At the foot of the page you will find all of the Policy maps. The numbers of each file represent the policy numbers each map relates to
Please note: In these extracts bullet points are numbered; in the Plan itself they are lettered - this is just a quirk of the features of "Weebly" which we use to make this website.
Click the + sign on the right to open any of the boxes
Below you can find the individual policies from the June 2020 version of the Plan.
These are the most important part of the the Plan as they tell developers, Breckland planners, and anyone else wanting to build in Saham Toney the rules they must adhere to.
You can find the supporting text for each policy in the full version of the Plan HERE
At the foot of the page you will find all of the Policy maps. The numbers of each file represent the policy numbers each map relates to
Please note: In these extracts bullet points are numbered; in the Plan itself they are lettered - this is just a quirk of the features of "Weebly" which we use to make this website.
Click the + sign on the right to open any of the boxes
The Plan aims to balance the 'privilege' it grants developers to build housing in Saham, with an obligation on them to help preserve and enhance the local environment. Thus there are two main policy groups, as listed below
GROWTH & DEVELOPMENT POLICIES
|
ENVIRONMENTAL PROTECTION POLICIES
|
POLICY 1: SERVICES, FACILITIES & INFRASTRUCTURE
P1.1 For development proposals to be supported, it must be demonstrated that there is sufficient social infrastructure capacity (including education, community facilities, healthcare, public transport, shops, businesses, employment, leisure and open space) available to support and meet all the necessary requirements arising from the proposal. P1.2 In assessing this capacity, consideration must be given to how accessible social infrastructure is with a preference given to sustainable modes of transport (i.e. walking, cycling and public transport) over non-sustainable driving routes. P1.3 Development shall take all opportunities to add to and enhance electric vehicle infrastructure. P1.4 Development shall be appropriately phased to allow delivery of any necessary infrastructure improvements. POLICY 2A: RESIDENTIAL HOUSING ALLOCATION
P2A.1 This Plan provides for 70 new homes up to 2036 through the allocation of sites, with an indicative delivery as follows (number of dwellings per site shown in brackets):
POLICY 2B: RESIDENTIAL DEVELOPMENT WITHIN THE SETTLEMENT BOUNDARY
P2B.1 Within the settlement boundary, sensitively designed residential development of a scale consistent with the Neighbourhood Area's place within the Breckland settlement hierarchy will in principle be supported where:
POLICY 2C: RESIDENTIAL DEVELOPMENT OUTSIDE THE SETTLEMENT BOUNDARY
P2C.1 Outside, but immediately adjacent to the settlement boundary (as defined in the Local Plan), in addition to the allocated sites listed in Policy 2A, residential development will be restricted to:
P2C.3 Should exceptional circumstances apply as set out in P2C.2, proposals for the development of brownfield sites on land outside but immediately adjoining the settlement boundary will be looked on favourably in preference to otherwise equivalent greenfield sites, where development will improve the visual appearance of the site and where the proposal includes measures to remove any form of public nuisance arising or that previously arose from the pre-existing use of the site. policy 2D: AFFORDABLE HOUSING
P2D.1 Where a need for affordable housing is triggered by Local Plan Policy HOU 07, a local connection criterion will be applied for Site Allocations STNP4, STNP7 and STNP16, as well as on any other non-allocated sites coming forward that comprise 10 or more dwellings or have a site area equal to or greater than 0.5 hectares. This means the affordable housing will be of an appropriate mix and type to meet the identified local need and made available, in perpetuity, by preference to people on Breckland Council’s Housing Register with a local connection to the parish of Saham Toney, using the following hierarchy of priority:
P2D.3 Where a site is, or has been, in a single ownership, artificial sub-division to avoid provision of affordable housing will not be permitted. POLICY 2E: HOUSING MIX
P2E.1 All residential development proposals shall include a housing mix and tenure which respond to local housing need having particular regard to the demographic characteristics of the Parish of Saham Toney, and as set out in the Saham Toney Housing Needs Assessment, 3rd Edition, April 2020. P2E.2 Sites that will deliver less than 10 dwellings are expected to deliver smaller homes of 3 bedrooms or less, in line with local needs identified in the Saham Toney Housing Needs Assessment, 3rd Edition, April 2020. P2E.3 For sites that will deliver 10 or more dwellings, the dwellings shall be of a size commensurate with the needs identified in the Saham Toney Housing Needs Assessment, 3rd Edition, April 2020, providing a mix and choice of houses, including 1- and 2-bedroom houses and the majority having 3 or less bedrooms. P2E.4 The following overall needs have been identified and shall be addressed in development proposals:
POLICY 2F: COMMON CRITERIA FOR ALLOCATED SITES
P2F.1 All residential development proposals shall comply with the following: P2F.2 A full ecological appraisal shall be provided with the planning application, and shall include details of any mitigation measures necessary to preserve biodiversity on the site. P2F.3 Satisfactory biodiversity and wildlife-friendly measures shall be incorporated into the design of the dwellings, gardens and public areas. P2F.4 Development shall include positive measures commensurate with the site size to enhance green infrastructure. P2F.5 Highway visibility splays no less than 2.4m x 59m shall be provided to each side of the site access where it meets the highway, and shall be in broad compliance with the indicative site access drawings given in Policy Maps 2F.1 -9. P2F.6 Where existing sewer and/or water mains in Anglian Water’s ownership are located within a site boundary, site layout shall be designed in a way that satisfactorily takes them into account. POLICY 2G: mASTERPLANNING
P2G.1 Proposals for all major developments that come forward shall include acceptable master-planned site layouts; with the exception of proposals for allocated sites STNP1, STNP4, STNP7 and STNP16, providing those do not significantly differ from their master-planned studies and the layouts given in Policy Maps 2G.1 and 2G.2. P2G.2 For sites requiring new or amended masterplanning, that shall be to a similar level of detail to that shown on Policy Maps 2G.1 and 2G.2. P2G.3 Where masterplanning is required, for sites located in areas of medium-high or high combined landscape sensitivity, it shall include 3D street-scene and/or aerial illustrations. POLICY 2H: SITE ALLOCATION STNP1: GRANGE FARM, CHEQUERS LANE
P2H.1 Development of predominantly brownfield land amounting to approximately 1.06 hectares at Grange Farm, Chequers Lane, designated as Site STNP1, and as shown on Policy Map 2H, for up to 10 new dwellings, will be permitted subject to meeting the following criteria:
P2H.3 This site is required to deliver no fewer than 2 affordable homes. POLICY 2I: SITE ALLOCATION STNP2: DISUSED PIGGERY, OFF HILLS ROAD
P2I.1 Development of brownfield land amounting to approximately 0.30 hectares at the Croft Piggery, Hills Road, designated as Site STNP2, and as shown on Policy Map 2I, for up to 4 new dwellings, will be permitted subject to meeting the following criteria:
POLICY 2J: SITE ALLOCATION STNP 4: LAND AT THE JUNCTION OF POUND HILL & PAGE'S LANE
P2J.1 Development of greenfield land amounting to approximately 0.81 hectares to the west of Pound Hill at its junction with Page’s Lane, designated as Site STNP4, and as shown on Policy Map 2J, for up to 17 new dwellings, will be permitted subject to meeting the following criteria:
P2J.3 This site is required to deliver a minimum of 4 affordable homes. POLICY 2K: SITE ALLOCATION STNP 7: PAGE'S FARM
P2K.1 Development of predominantly brownfield land amounting to approximately 0.54 hectares at the Page’s Farm, Page’s Lane, designated as Site STNP7, and as shown on Policy Map 2K, for up to 8 new dwellings, will be permitted subject to meeting the following criteria:
P2K.3 This site is required to deliver no fewer than 2 affordable homes. POLICY 2L: SITE ALLOCATION STNP9: OVINGTON ROAD
P2L.1 Development of greenfield land amounting to approximately 0.445 hectares on the north side of Ovington Road, designated as Site STNP9, and as shown on Policy Map 2L, for up to 3 new dwellings, will be permitted subject to meeting the following criteria:
POLICY 2M: SITE ALLOCATION STNP13: HILL FARM
P2M.1 Development of greenfield land amounting to approximately 0.20 hectares at Hill Farm, Hills Road, designated as Site STNP13, and as shown on Policy Map 2M, for up to 5 new dwellings, will be permitted subject to meeting the following criteria:
P2M.3This site is expected to be developed between 2029 and 2032 POLICY 2N: sITE ALLOCATION STNP14: CROFT FIELD
P2N.1 Development of greenfield land amounting to approximately 0.30 hectares at Croft Field, Hills Road, designated as Site STNP14, and as shown on Policy Map 2N, for up to 5 new dwellings, will be permitted subject to meeting the following criteria:
POLICY 2O: SITE ALLOCATION STNP15: 8 RICHMOND ROAD
P2O.1 Development of land comprising an existing dwelling and residential garden, amounting to approximately 0.40 hectares at 8 Richmond Road, designated as Site STNP15, and as shown on Policy Map 2O, for up to 6 new dwellings, will be permitted subject to meeting the following criteria:
P2O.3 A scale plan of the proposed site access and visibility splays in accordance with Policy 2F and to the satisfaction of the Local Highways Authority shall be submitted with a planning application for this site. P2O.4 This site is expected to be developed between 2033 and 2036. POLICY 2P: SITE ALLOCATION STNP16: RICHMOND HALL
P2P.1 Development of greenfield land amounting to approximately 0.65 hectares at Richmond Hall, Richmond Road, designated as Site STNP16, and as shown on Policy Map 2P, for up to 12 new dwellings, will be permitted subject to meeting the following criteria:
P2P.3 This site is required to deliver not fewer than four affordable homes in combination with the adjacent permitted site. POLICY 2Q: AMENITY LAND AT RICHMOND HALL
P2Q.1 The land designated as amenity land on Policy Map 2P is safeguarded in perpetuity as future publicly accessible amenity land. P2Q.2 As a condition of site STNP16 being designated as an allocated site in this Plan, the owner of the amenity land will make appropriate provision for its future management and maintenance. P2Q,3 Public pedestrian access to and from the amenity land shall be via site STNP16, as set out in Policy 2P and Policy Map 2G.2. POLICY 3A: DESIGN
P3A.1 General: All proposals shall be guided by the most up to date version of the Saham Toney Parish Design Guide, and demonstrate they are well-designed in a manner that reflects the varied local context and contributes positively to Saham Toney's distinctive rural character (as described in the Saham Toney Landscape Character Assessment). Planning applications will be expected to be accompanied by a statement which explains how the design principles underpinning a scheme complies with this Policy and the Saham Toney Parish Design Guide. P3A.2 Local context: New development shall:
P3A.4 Local integration: Proposals shall:
P3A.6 Layout and landscaping: Design and layout shall:
POLICY 3B: DENSITY OF RESIDENTIAL DEVELOPMENTS
policy 3c: site access and on-site streets layout
P3C.1 Successful site access and on-site street layout will be promoted by applying the following principles to all development:
policy 3d: parking
P3D.1 Appropriate provision for parking of vehicles and bicycles site access will be promoted by applying the following principles to all development:
policy 3e: dark skies preservation
P3E.1 Street lighting of new developments or any other lighting that affects the "dark skies" of the Neighbourhood Area shall normally be avoided. Where street lighting is proposed:
policy 4: non-residential development
P4.1 Development or enhancement of existing or new business, recreational, sport or tourism related facilities, or new community facilities will be supported where:
P4.3 Proposals where new development increases the demand for sport or other recreational facilities will be subject to the same criteria Local Plan Policy COM 04 specifies for community facilities, in accordance with the requirements of regulation 122 of the Community Infrastructure Levy Regulations 2010. P4.4 Particular support shall be given to development proposals which provide for:
|
policy 5: saham toney rural gap
P5.1 A Rural Gap maintaining separation of Saham Toney from Watton is designated as shown on Policy Map 5.1. P5.2 Proposals for essential utility infrastructure will be permitted in the rural gap. P5.3 Otherwise, in the rural gap, development will only be permitted where it is demonstrated in a Design and Access Statement and a Landscape Visual Impact Appraisal that it:
policy 6: heritage assets
P6.1 The parish’s designated heritage assets and their setting including listed buildings, scheduled monuments and designated assets above and below ground, will be conserved or where possible enhanced. Proposals for their development will take into account their significance and contribution to local distinctiveness, character and sense of place. P6.2 Decisions about proposed changes that could affect the significance of any designated heritage assets shall be made having regard to the advice in the most up to date version of Historic England's Good Practice Advice in Planning: 2 "Managing Significance in Decision-Taking in the Historic Environment", or any more up to date guidance made available by Historic England on its website or elsewhere, and also taking into account the relevant policies in the most up to date version of the National Planning Policy Framework. P6.3 Proposals for development that affect non-designated heritage assets will be considered taking account of the scale of any harm or loss and the significance of the non-designated heritage assets as set out in the National Planning Policy Framework and as described in a Design and Access Statement or Heritage Statement. In making a balanced judgement between significance and harm, particular attention shall be given to opportunities to conserve, and wherever possible enhance the character, appearance and setting of the non-designated asset. Managed, sympathetic change will be supported. P6.4 Where a proposed development site includes the location of a Site or Find defined as a designated or non-designated heritage asset in the Saham Toney Heritage Asset Register, or if a new archaeological asset is found during any preliminary site investigations, or has the potential to include heritage assets with archaeological interest, it should ideally be left in situ and undisturbed by the development. If this is not feasible, applicants shall:
Where it is deemed an asset, or assets have significant archaeological interest, conservation or mitigation measures shall be adopted, based on a balanced judgement of their benefit against the likely impact on the development. P6.5 Where a need for field evaluation is identified by Breckland Council, a planning condition shall be agreed to prevent any disturbance of the development site until such investigation has been completed to the satisfaction of the Local Planning Authority Archaeologist. P6.6 For all heritage assets, both designated and undesignated, the level of work required to understand and assess an asset's significance shall be appropriate and proportionate in scope and depth to the importance of the heritage asset potentially affected. P6.7 For all heritage assets, both designated and undesignated, if some negative impact or loss of fabric is unavoidable, then the applicant will be required to record and advance understanding of the significance of elements, including archaeological deposits, that will be removed or altered, both prior to and during the work. policy 7a: landscape character preservation & enhancement
P7A.1 All development proposals shall seek to preserve and enhance landscape features which contribute towards local distinctiveness and sense of place.
P7A.2 In general development proposals will be supported where:
P7A.4 Within the settlement boundary, proposals shall respect or reinforce the distinguishing landscape and townscape features in the village character area in which a proposed site is located. Settlement Fringe Areas P7A.5 Proposals in the settlement fringe shall:
Rural Character Areas P7A.7 Proposals beyond the settlement fringes shall be restricted to appropriate countryside development and shall respect and reinforce the distinguishing characteristics of the rural character area (as described in the Saham Toney Parish Landscape Character Assessment 2019) in which a proposed site is located. P7A.8 Where appropriate development does come forward outside the settlement boundary, opportunities will be sought to address the opportunity and management aims (as set out in the Saham Toney Parish Landscape Character Assessment 2019), for the rural / fringe character area in which a proposed site is located. Table P7A.1: Settlement fringe landscape sensitivities by area: policy 7b: key views
P7B.1 Development proposals shall seek opportunities to preserve, incorporate and where possible enhance the Key Views listed below and shown on Policy Map 7B, and their landscape setting. Development proposals which adversely impact on these key views will not be supported.
policy 7c: local green spaces
P7C.1 The open spaces listed below and shown on Policy Maps 7C.1 and &C.2 are designated as Local Green Spaces. New development on these sites will not be permitted other than in exceptional circumstances, which may include essential utility infrastructure for which no other feasible site is available. ST-GS1: The parish sports field, including the community orchard; ST-GS2: The Wells Cole Community Centre park land, including the "Growing Together" wildlife area; ST-GS3: The land immediately surrounding Saham Mere; ST-GS4: St George's churchyard and cemetery; ST-GS5: The village allotments; ST-GS6: The bird sanctuary. policy 7d: biodiversity & habitats
P7D.1 Development proposals will be expected to retain existing features of biodiversity value and, where practical to do so, provide a net gain in biodiversity through for example:
P7D.3 Proposals that may adversely affect primary habitats (as defined on Policy Maps 7D.1a/b) or priority habitats (as defined on Policy Maps 7D.2a/b), or the ecological connectivities between them (as defined on Policy Maps 7D.3a/b), or protected species, or other priority species (as defined on Policy Maps 7D.4a/b) shall demonstrate in an ecological assessment, that:
P7D.5 Wherever else possible, opportunities shall be sought and supported to:
P7D.7 Existing undeveloped green space, both private and public, should be generally conserved for its visual and biodiversity value. P7D.8 Development proposals shall take account of Natural England’s Impact Risk Zones to assess any potential impact of a proposal on a Site of Special Scientific Interest. policy 7e: green infrastructure
P7E.1 Development proposals will be expected to take every opportunity to conserve green infrastructure features of value and, where practical to do so, provide a net gain in green infrastructure. P7E.2 Development shall recognise the importance of ecosystem services and promote multi-functional land use and connectivity. P7E.3 Proposals setting out green infrastructure measures to be incorporated in development shall be included in a Design and Access Statement or Planning Statement. P7E.4 Soft landscaping shall be used in preference to hard wherever possible. P7E.5 Wherever possible developments shall incorporate small water bodies. policy 7f: trees & hedges
P7F.1 Trees, copses and woodlands of good arboricultural or amenity value shall not be removed as a result of development unless justified by an assessment based on an on-site tree and biodiversity survey that verifies that the poor health and condition of such items warrants their removal. P7F.2 Proposals that may result in significant harm to, or full or partial removal of ancient woodlands and veteran trees shall be wholly exceptional and only permitted if they have been assessed in accordance with Natural England's "Standing Advice for Ancient Woodland and Veteran Trees" (or any more up to date guidance made available by Natural England), and shown to be justified. P7F.3 Any Category A or B tree or hedgerow, or any Category C tree or hedgerow that has the growth potential to become Category A or B, lost as a result of development shall be adequately compensated elsewhere within the site, taking into account the size and condition of the lost items. Replanting should comprise species that are characteristic of the area and enhance the landscape. Supplementary planting which strengthens the existing network of hedgerows will also be supported. P7F.4 New developments shall provide for an appropriate level of new tree and hedge planting, with species that are characteristic of the area. New trees and hedges shall be given adequate room to reach maturity. Where necessary, planning conditions should be sought to secure planting of new trees and hedges. P7F.5 Appropriate measures shall be taken to protect the roots of all existing trees and hedges that are to be retained on a site during the process of development. All retained trees and hedges that could be adversely affected by development shall be protected as defined in sections 5-7 and Appendix A of British Standard BS5837:2012 “Trees in Relation to Design, Demolition and Construction”. P7F.6 Development adjacent to ancient woodland or veteran trees shall incorporate buffer zones as laid out in Planning Practice Guidance: “Ancient woodland, ancient trees and veteran trees: protecting them from development”. policy 8a: surface water management general provisions
P8A.1 All development proposals shall include a site-specific Surface Water Drainage Strategy. That Strategy, including any necessary flood risk mitigation measures, should be agreed as a condition of the development, before any work commences on the site, and implemented before the new development is connected to the existing drainage system. Development will not be allowed to proceed until this condition has been discharged. P8A.2 All development proposals coming forward within the areas of high, medium and low risk from surface water flooding as identified by the Environment Agency in its up to date online maps, shall include a site-specific Flood Risk Assessment that gives adequate and appropriate consideration to all sources of flooding and the proposed method of surface water drainage. P8A.3 All proposals shall have a neutral or positive impact on surface water drainage. P8A.4 All development proposals shall demonstrate engagement with the relevant agencies and shall seek to incorporate appropriate mitigation measures to manage flood risk and reduce surface water run-off to the development and wider area. P8A.5 All proposals in areas of high, medium or low risk of surface water flooding, regardless of development size, shall be reviewed by the Lead Local Flood Authority (for the means of surface water disposal) and the Statutory Water Undertaker (where surface water is proposed to be discharged into the public sewerage network) prior to being decided. P8A.6 Permission for proposals for which no other practicable alternative exists to dispose of surface water other than a public sewer, shall only be granted if it is confirmed by Anglian Water, the Local Highways Authority, or their agents that there is adequate spare capacity in the existing system taking future development requirements into account. P8A.7 As a condition of their adoption, SuDS drainage schemes shall comply with the guidelines given in Water UK’s "Sewers for Adoption", Edition 8, 2019, or any more up to date version made available, and with the most up to date version of CIRIA 753, The SuDS Manual. policy 8b: surface water runoff (discharge) rate & volume
P8B.1 Appropriate on-site water storage measures shall be incorporated in the drainage scheme to intercept, attenuate or store long term surface water run-off within the development site boundary, up to and including the 1% AEP (Annual Exceedance Probability) event plus 40% climate change allowance. P8B.2 For the 100% AEP and the 1% AEP events, the peak runoff rate and volume from a site to any highway drain, sewer or surface water body:
P8B.4 Where it is not possible to dispose of any runoff additional to greenfield rates and/or volumes on the site, final runoff rates and/or volumes shall be restricted further to ensure compliance with Standard S6 of the SuDS Non-Statutory Technical Standards (2015) or any subsequent update of those standards. P8B.5 If control to greenfield runoff volume is considered unachievable, then any excess runoff volume shall be temporarily stored and released at a rate no more than 2l/s/ha. P8B.6 Proposals shall identify appropriate SuDS discharge outlets for surface water runoff (both above and underground). P8B.7 Where discharge is into an ordinary watercourse with known surface water flooding issues, a flood flow (i.e. surcharged outfall) shall be applied as a constraint in runoff calculations., using the 1% AEP event, plus relevant catchment specific, climate change fluvial flow. P8B.8 Drainage strategies shall consider and account for the potential increase in the volume of runoff from a development as a result of increases in the area of impermeable surfaces. P8B.9 Where runoff from off-site sources is drained together with the site runoff, the contributing catchment shall be modelled as part of the drainage system in order to take full account of the additional inflows to the site. P8B.10 Where runoff from off-site sources is conveyed separately to a site’s proposed drainage system the flood risk should be managed in accordance with BS8533:2011 “Assessing and managing flood risk in development – code of practice”. P8B.11 Surface water run-off mitigation measures shall address any identified risk of flooding in the Lead Local Flood Authority’s order of priority: Assess; Avoid; Manage and Mitigate. P8B.12 For residential developments, an allowance based on development density for increases in impermeable surfaces throughout the lifetime of a development shall be considered in runoff calculations, up to total impermeable surface percentage of 100%. The allowance shall be:
policy 8c: infiltration testing
P8C.1 All proposals shall include an assessment of the suitability of the underlying geology to discharge collected surface water to the ground via infiltration. P8C.2 Evidence from infiltration tests shall be submitted to support the assumed infiltration rate(s) across a site. P8C.3 Infiltration testing shall be undertaken in line with BRE Digest 365 guidance, and shall include a minimum of three tests undertaken within 24 hours at each location. P8C.4 The depth of testing shall be representative of the drainage proposals. P8C.5 It shall be confirmed that any proposed use of infiltration will not lead to any geotechnical risks to a site. P8C.6 On-site test results shall be made submitted at appropriate planning application stages in accordance with the recommendations of CIRIA C753: The SuDS Manual. policy 8d: surface water flood risk & climate change
P8D.1 Assessment of flood risk and design of a surface water drainage system shall include allowance for climate change in accordance with the most up to date Government guidance. P8D.2 For sustainable drainage systems, a 40% climate change scenario shall be tested for developments with a lifespan over 50 years. P8D.3 Peak river flow climate change allowances for the relevant catchment (in line with Environment Agency guidance “Flood Risk Assessments: Climate Change Allowances’, shall be considered for ordinary watercourses as well as main rivers. policy 8e: surface water drainage & water quality
P8E.1 All proposals shall consider risk to water quality that may arise, taking account of the final discharge location(s). P8E.2 Where piped components are proposed as part of a surface water drainage scheme, non-piped SuDS components shall be used to treat water prior to final discharge. P8E.3 Providing it is separated from other surface water runoff residential roof water may be directly discharged to a watercourse or soakaway without treatment. P8E.4 The sensitivity of the receiving waterbody (ground or surface), including protected aquifers, should be considered and extra water quality treatment provided if a protected resource is identified. P8E.5 Protection of water quality in the Breckland SAC and Norfolk SAC shall be given high priority. P8E.6 Proposals shall demonstrate a total pollution mitigation index ≥ the pollution hazard index, using the indices set out in chapter 26 of CIRIA 753: The SuDS Manual, or by a bespoke risk assessment process. policy 8f: management & maintenance of sustainable drainage systems
P8F.1 All proposals shall appropriately address the management and maintenance of SuDS to account for the construction and long-term operation of all components of the drainage system, both surface and sub-surface. P8F.2 Proposals shall sufficiently consider the likely maintenance requirements of new and existing drainage infrastructure over the design life of a development, including those for ordinary watercourses that are bounded by, or within a development site. P8F.3 All proposals shall provide a SuDS Management and Maintenance Plan including:
P8F.5 Appropriate easements shall be provided around SuDS features to allow access for maintenance. P8F.6 Where pumping is proposed as part of SuDS, it shall be demonstrated that appropriate maintenance proposals are included for the pumping system. P8F.7 All SuDS management and maintenance proposals shall be guided by the most up to date version of CIRIA 753: The SuDS Manual. policy 8g: resistance & resilience of sustainable drainage systems
P8G.1 SuDS capacity shall be such that no onsite flooding or increased offsite flood risk will occur for events up to the drainage system standard of service capacity, which shall be taken as the 1% AEP plus climate change allowance. All proposals shall demonstrate how impacts to people and property will be minimised where this is a residual risk of flooding (i.e. if the drainage system capacity will be exceeded in an event greater than the 1% AEP event plus 40% climate change). P8G.2 All proposals shall demonstrate that safe access and egress through a site will be maintained during a flood event that exceeds the 1% AEP plus 40% climate change. P8G.3 It shall be demonstrated that the drainage system is designed so that unless specifically designated to hold or convey water, flooding will not occur in any part of a building nor to utility plant that is susceptible to water. P8G.4 Where applicable, proposals shall identify safe exceedance routes and storage areas for residual flood water. P8G.5 In all cases there shall be a minimum of at least 150mm freeboard between proposed external ground levels and property finished ground floor levels (FFL). P8G.6 Resistance and resilience measures shall be included where there is a residual risk of flooding. In such cases, as a minimum, property FFL throughout the development shall be set to a minimum of 300mm freeboard above the anticipated flood levels in a 1% AEP event plus 40% climate change from any source of flooding. This shall be increased to 600mm where there is uncertainty about flood levels. P8G.7 The design of the drainage system for exceedance flow management shall take account of any residual flood risk for the site. An assessment shall also be made of the likely significance of risks associated with the following scenarios:
P8G.9 All proposals shall demonstrate the use of appropriately flood resistant / resilient construction. policy 8h: design of sustainable drainage systems
P8H.1 Surface water runoff shall be controlled as near its source as possible through a sustainable drainage approach. P8H.2 The provision of a sustainable urban drainage system (SuDS) is the preferred method to manage surface water runoff, and the proposed method of draining a site shall be in accordance with the sustainable drainage hierarchy. P8H.3 All necessary SuDS design data and calculations shall be presented with proposals and shall demonstrate the system will function satisfactorily throughout its lifetime. P8H.4 Where a SuDS solution is proposed, outline or final SuDS Design Statements shall be provided at appropriate stages of a planning application. P8H.5 Design of the proposed drainage system shall be such that runoff is completely contained within the system for all events up to the standard of service for the critical duration event for the system (the 1% AEP, 6-hour plus allowance for climate change event). P8H.6 All drainage system proposals shall be guided by the drainage section of the most up to date version of the Saham Toney Parish Design Guide and the most up to date version of CIRIA Report C753: The SuDS Manual. P8H.7 Infiltration drainage shall generally be shallow (less than 2m deep); deeper methods shall only be used in exceptional circumstances. P8H.8 A design safety factor shall be applied to measured infiltration rates, guided by Table 25.2 of CIRIA Report C753: The SuDS Manual. P8H.9 Where the rate of infiltration established in accordance with Policy 8C is found to be less than 1 x 10-6 m/s or 0.0036 m/hour, only partial or no infiltration should be considered at a site, combined with on-site interception of run-off. P8H.10 Design shall demonstrate sufficient surface water storage capacity to enable an infiltration system to meet the design standard of service. P8H.11 Where any part of the system is at risk of inundation during extreme events, the impact of a potential loss of storage on overall system performance shall be evaluated and accounted for. P8H.12 SuDS features shall be provided with appropriate inlets, outlets and control components to manage the flow of water. Such components shall be resistant to blockage. P8H.13 There shall be a minimum of 1.0m between the base of any soakaway and seasonally high groundwater levels. P8H.14 Wherever possible and practical, drainage system design proposals shall take every opportunity to improve (i.e. lessen) existing flood risk on a site and/or in downstream areas. P8H.15 Where applicable, design of SuDS systems shall include measures to improve land drainage via watercourses or ditches that form part of a site or run adjacent to its boundary, and make adequate provision for their future maintenance. P8H.16 Culverting of existing watercourses shall be avoided wherever possible. If adopted, it shall be in accordance with the Lead Local Flood Authority’s Standing Advice 1: Ordinary Watercourse Consenting. P8H.17 Design of temporary drainage for the construction phase shall be included where necessary and shall demonstrate construction activities will not lead to an increase in flood risk. P8H.18 SuDS design shall meet the most up to adoption standards of the Highways Authority and/or Anglian Water as applicable. policy 9: sewerage provision
P9.1 All new development will be expected to connect to the public foul sewerage network in accordance with the requirements of Anglian Water unless evidence is produced that it is not feasible to do so. P9.2 Evidence shall be provided by applicants to demonstrate that capacity* is available within the foul sewerage network, including at the treatment works and at intermediate pumping stations, or can be made available in time to serve the development. P9.3 If mains sewerage is demonstrably not feasible then an effective and sustainable private sewerage system plan shall be agreed with the Local Planning Authority in advance of development commencing. Such a plan must be implemented prior to the occupation of the first dwelling. P9.4 All development proposals for 10 or more houses shall include a sewerage capacity assessment. Where such assessment identifies a need for mitigation within the foul sewer network any foul drainage solution must be implemented before occupation commences. P9.5 All development proposals shall demonstrate that there is no increased risk of flooding either on the development site itself or to the wider area from sewers or artificial sources as a result of the development. P9.6 Foul sewers shall comply with the guidelines given in "Sewers for Adoption", Edition 8, 2019, or any more up to date version made available. *When calculating available capacity, the nominal diameter of foul sewer pipes shall be reduced by 20% to account for potential surface water flows into foul sewers. |
GROWTH & DEVELOPMENT POLICY MAPS
|
ENVIRONMENTAL PROTECTION POLICY MAPS
|