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Wiltshire & Swindon Aggregate Minerals Site Allocations DPD - Evidence Report The results of a constraints sieving exercise applied to remaining sand and gravel resources in Wiltshire and Swindon March 2010 Wiltshire & Swindon Aggregate Minerals Site Allocations DPD Evidence Report The results of a constraints sieving exercise applied to remaining sand and gravel resources in Wiltshire and Swindon March 2010 Alistair Cunningham Celia Carrington Director of Economy and Enterprise Director of Environment and Regeneration Wiltshire Council Swindon Borough Council County Hall Premier House Trowbridge Station Road Wiltshire Swindon BA14 8JD SN1 1TZ © Wiltshire Council Contents Page Executive Summary iii 1. Introduction/Aims and Objectives 1 2. Sieving Methodology 4 3. Results of the sieving process The Upper Thames Valley Mineral Resource Zone 9 The Calne Area Mineral Resource Zone 13 South East of Salisbury Mineral Resource Zone 17 Salisbury Avon Mineral Resource Zone 21 Bristol Avon Mineral Resource Zone 25 4. Results overview 29 5. Next steps and further assessment 31 Appendices Appendix 1 – Assumed Key Market Areas: Upper Thames Valley, Calne Area and 36 South East of Salisbury MRZs Appendix 2 – Assumed Key Market Areas: Bristol Avon and Salisbury Avon MRZs 38 Appendix 3 – Upper Thames Valley MRZ Sieving Exercise Maps 40 Appendix 4 – Calne Area MRZ Sieving Exercise Maps 50 Appendix 5 – South East of Salisbury MRZ Sieving Exercise Maps 60 Appendix 6 – Salisbury Avon MRZ Sieving Exercise Maps 70 Appendix 7 – Bristol Avon MRZ Sieving Exercise Maps 80 i ii Executive Summary Wiltshire Council and Swindon Borough Council (the Councils) have made significant progress in reviewing the former Minerals Local Plan 2001. The Minerals Core Strategy 2006 – 2026 was adopted in June 2009 and the Minerals Development Control Policies document was adopted on in September 2009. These ‘Development Plan Documents’ identify the broad locations for future minerals development in Wiltshire and Swindon and describe the criteria for determining associated planning applications. The Councils currently have an expectation to meet a forecast sand and gravel production rate of 1.85 million tonnes (mt) per annum over the period up to 2016. To achieve this, the Councils need to identify sufficient land in aggregate mineral bearing resource areas to meet forecast expectations. The Councils undertook the process of identifying areas of mineral resource between 2004 and 2006, resulting in a number of sites being put forward. However the combined estimated yield for these sites was insufficient to meet the full provision requirement to 2026. In response to this, the Councils commissioned the British Geological Survey (BGS) to undertake an assessment of the remaining sand and gravel resources within the Plan area. From this information, the Councils conducted a sieving exercise (applying a number of constraints through 6 sieving stages) to determine additional areas of resource that could be worked over the period to 2026, along with those sites identified through previous exercises conducted between 2004 and 2006. Results from the sieving exercise when combined with estimated tonnage figures from sites identified between 2004 and 2006 indicate that (using the most optimistic scenario) there are the following remaining workable reserves within the Plan area: Mineral Resource Zone Combined (estimate) total (mt) Upper Thames Valley 22.9 Calne Area 25.4 South East of Salisbury 3.1 Salisbury Avon 2.2 Bristol Avon 6.8 Although results from this sieving exercise indicate that there is theoretically enough remaining resource in the Plan area to maintain a production rate of 1.85mt, this should only be considered as the most optimistic scenario. Planning considerations, industry appetite to develop in new resource areas, the flexibility of market forces, historical trend data, and the viability of alternative mineral reserves will ultimately determine the Councils’ ability to meet forecast provision rates. The Councils will now undertake initial site appraisals on those sites identified through the sieving exercise before meeting with key stakeholders to discuss potential issues arising through the appraisal process. During April and May 2010, stakeholder consultation will be undertaken on an initial list of sites to help determine those to take forward into the detailed assessment stage. Following this consultation exercise, potential sites will then be considered by the Councils in the detailed assessment stage of the Site Allocations DPD work, where they will undergo rigorous appraisal by environmental consultants and Council officers to determine their long-term suitability. The Councils will then prepare the Aggregate Minerals Site Allocations DPD publication document underpinned with the findings of all assessment work. This draft document will be published for a minimum 6 week period of consultation before final submission of the Aggregate Minerals Site Allocations DPD to the Secretary of State for Independent Examination, timetabled for early 2011. iii iv 1. Introduction 1.1 Wiltshire and Swindon (the Councils) currently have an expectation1 to meet a forecast sand and gravel production rate of 1.85 million tonnes2 per annum over the period up to 2016. In order to achieve this, the Councils need to identify sufficient land in aggregate mineral bearing resource areas to meet forecast expectations. 1.2 South West Councils (the Regional Planning Body) are currently undertaking a review of the sub-regional apportionment in order to meet the latest revised national and regional guideline figures3 with a view to determining a realistic and sustainable provision of minerals into the long-term (until 2020). However, until new (sub-regionally apportioned) guideline figures are published, the Councils will use current forecast provision rates as a basis for planning the release of new sites and landbank maintenance up to 2026. 1.3 The Adopted Wiltshire and Swindon Minerals Core Strategy indicates that the provision requirement for sand and gravel in Wiltshire and Swindon equates to approximately 32 million tonnes (taking into account remaining undeveloped Preferred Areas and permitted reserves) for the period 2006 – 2026. 1.4 The Councils began the process of identifying sites to meet the provision requirement through circulating two ‘call for sites’ letters to mineral operators and landowners between 2004 and 2006. This resulted in a number of sites being put forward (as ‘developer proposed’) for future consideration. However, the combined estimated yield for these sites totalled approximately 11.4 million tonnes and was insufficient to meet the full provision requirement to 2026. 1.5 This insufficient yield raised obvious concerns about the capacity for Wiltshire and Swindon to meet forecast demand and in response to this, the Councils commissioned the British Geological Survey (BGS)4 to carry out a provisional assessment of the remaining sand and gravel resources within the Plan area. The results of the BGS assessment showed that, in principle, remaining resources could meet the provision requirement up to 2026 and beyond. However, the BGS assessment only considered and applied international and national environmental constraints (designations), and did not consider other planning limitations, such as local environmental constraints, residential amenity or landowner consent which will invariably result in additional areas of resource being excluded from consideration. 1.6 The BGS Report did not consider the Bristol Avon, or parts of the Salisbury Avon to the north of Salisbury, as having any resource potential. In their opinion this is due to the general poor quality of deposits in the area, although it is acknowledged that within the Bristol Avon there may be pockets of viable mineral resources scattered within these areas. The Councils have previously permitted sites for minerals extraction, and considered a range of potential sites, in the Bristol Avon Valley through the preparation of the former adopted Minerals Local Plan (2001). As a result, the Bristol Avon Valley was not discounted from consideration at this stage5. 1 Based on sub-regional apportionments produced by the Regional Planning Body (2005 / 2006). 2 The annualised forecast production rate, set through the last sub-regional apportionment process (2005 / 2006). 3 Based on figures published in the ‘National and regional guidelines for aggregates provision in England 2005-2020.’ (CLG, 2009). 4 The British Geological Survey (BGS) ‘A Provisional Assessment of the Sand and Gravel Resources of Wiltshire and Swindon.’ (2007). 5 Wiltshire and Swindon Minerals and Waste Development Framework – Evidence Base. Part C: Minerals (March 2008). 1 1.7 However, due to the high level of constraints in the area and from a general lack of interest to work the resource from the minerals industry, the resource areas to the north of Salisbury, forming part of the Salisbury Avon resource zone, were discounted from further consideration. 1.8 Through this evidence, the Minerals Core Strategy identified that sand and gravel provision should be delivered through land located within the following Mineral Resource Zones (MRZs) the extent of which are illustrated in figure 16: • The Upper Thames Valley; • The Calne Area; • Land to the south east of Salisbury; • The Salisbury Avon (south of Salisbury); and • The Bristol Avon. Figure 1: Sand and Gravel Resources in Wiltshire Assessed by the BGS 6 Please note, the extent of previous