Stonepits Quarry, Benefield Landscape Mitigation Additional Information to Support Planning Application
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Stonepits Quarry, Benefield Landscape Mitigation Additional Information to support planning application Vista Landscape Studio June 2013 Stonepits Quarry, Benefield The following is the dialogue from T Cuss from Northampton County Council concerning concerns for the development at Stone Pits Quarry. The responses from Vista Landscape Studio are stated in red with reference to the subsequent figures and drawings: TOWN AND COUNTRY PLANNING ACT 1990 PROPOSED DEVELOPMENT: Conservation stone quarry to extract Blisworth Limestone (Oundle variety) Blockstone, Flagstone and Large Walling Stone LOCATION: Stone Pits Quarry, Between Upper and Lower Benefield, A427, Northamptonshire, PE8 5AN 1. I have some concerns regarding details of the data, information and assessments provided in the Environmental Statement and technical appendices on which I would welcome clarification or further information. I have also made some suggestions for amendment of landscaping or habitat creation proposals in order to ensure avoidance of impact on protected species and that appropriate mitigation is included in planning proposals and ecological and landscape enhancements would be secured for the long term were any application to be approved. In my opinon the landscaping proposals do not currently provide suitable or adequate mitigation to reduce impacts or enhance landscape character. Response: After discussions on site it was agreed that the planting belt provided along the eastern boundary due to the size of the proposed trees would provide adequate mitigation to the proposed quarrying activities. It was also agreed that the subsoil and topsoil mounds would be shaped to be more harmonious with the existing contours. These are shown on Figure 5 and supported by sections on Figures 6 and 7 on the subsequent pages of this response. LANDSCAPE AND VISUAL IMPACT ASSESSMENT 2. A Landscape and Visual Impact Assessment (LVIA) prepared by Vista Landscape Studio Ltd has been included within the appendices of the Environmental Statement. The landscape sensitivi- ties appear not to have taken into account local landscape designations. According to the LVIA the DEFRA Magic interactive map has been used as a source of environmental data. However nei- ther the LVIA nor Figure 4 ‘Landscape Features’ include information on the Conservation Areas at Upper and Lower Benefield, the Benefield Castle Scheduled Ancient Monument or the Sites of Special Scientific Interest at Banhaw, Spring and Blackthorns Woods. According to the ‘Guidelines for Landscape and Visual Impact Assessment’ desk-top studies should explore special interests including nature conservation, historical or cultural heritage associations. Confirmation should therefore be provided by the applicant’s Landscape Consultant that these designations have been fully taken into account in the LVIA assessments. Response: It is confirmed that Vista Landscape Studio considered the SSSI’s and Ancient Monument when assessing the projects and impacts but due to the distance away from these designations found that there would be no impact on them. 3. Tables 21 to 28 within the LVIA set out details of the predicted impacts of the proposals on landscape character of the selected viewpoints 1 to 9. The landscape impacts on viewpoints 4, 5 and 6 to the southeast and south west of the quarry site are assessed as moderate. The impact at the junction of 3 footpaths to the east of the development site at viewpoint 2 is assessed as minor. The changes to the Rockingham Plateau Character Area (7C) landscape character are assessed as of High Magnitude and the significance of the impact as Moderate-Major. I would note that an assessment of cumulative impact on the environment should not be limited only to similar developments. Response: It is considered that there are no other developments proposed within suffi cient proximity to the development to cause an adverse cumulative impact in landscape terms. The nearest operational development is the Harley Way Quarry which has already been considered in the submitted LVIA. Stonepits Quarry, Benefield Figure 1 Landscape Mitigation and Residual Impacts 4. Section 6.1.1 of the Landscape Assessment Appendix identifies operations sources of potential impact on landscape and landscape character. These include the 8m high landscape overburden mound and 3m subsoil storage mounds, stone stockpiling, creation of a settlement pond, haul road, areas of hardstanding and a weighbridge. Section 9.1 describes proposed short, medium and long term proposed mitigation measures, however, the timescales of these terms are not defined. Unless the tree stock are standards and at least some areas of instant hedging is planted, then the landscaping proposals will not provide any screening of the quarry during the 17-year operational life. Response: On the mitigation plan Figures 12 and 13 within the LVIA report there is a schedule that states that the trees will be 16/18 size and will be planted at 4.0-4.5metres in height. These will provide immediate screening effect on day of planting. These have been updated and added to this report See Figures 9 and 10 below 5. The proposed mitigation woodland screen planting is very straight and linear in nature and is therefore not characteristic of the existing woodland or hedgerows within the Character Area. The proposed woodland crosses the valley whereas the majority of narrow linear woodlands follow the line of streams or roadways. The proposed landscape screening therefore does not in my view provide the level of enhancement to landscape character as assessed with in the LVIA and Environmental Statement and may have a negative impact. Response: This item was discussed on site and it was noted that there are a number of existing linear woodland belts in the vicinity of the Site that run across the contours. One particular feature was noted to the south-west of the Site on the opposite side of the valley that forms the southern boundary. The belt comprises conifers but would be similar in width to the mitigation woodland belt proposed as part of the proposals. The advantage of the proposed belt is that it will comprise indigenous tree species of appropriate size to provide immediate impact. 6. I do not agree that the proposed short and medium term mitigation measures, such as the 8m high overburden/waste mineral mound and the subsoil storage mounds, reduce the impacts on visual amenity. I would not therefore concur with the conclusion made that these mitigation measures can be assessed as reducing the impacts or that the proposals would not result in residual negative impacts on landscape and visual amenity or result in a long term positive change to the landscape framework. The storage mounds would be incongruous features in the landscape and would in my opinion contribute to the negative the impacts and be more visible to sensitive visual receptors than the quarrying operations. Response: It was agreed on site that additional proposals would be provided showing more sympathetic mounding with curving contours that would blend with the contours and not act as incongruous mounds. These are shown on Figure 5 and supported by sections on Figures 6 and 7 on the subsequent pages of this response. 7. More information and clarification is needed as to how the overburden mound would be seeded and grass and wild flowers would be established and why these measures have been proposed. The proposal for seeding of the temporary mound with wildflowers made within the LVIA is not repeated within Section 5.1.8 of Ecological Baseline & Impact Assessment appendix nor has it been assessed as providing any mitigation or benefit for biodiversity by the Ecological Consultant. Response: It was agreed that the mounding would be sown with a grass mix as this would blend with the existing landscape character better than wild flower planting. This can be agreed as a condition 8. According to the Restoration and Aftercare Scheme that has been submitted in support of the Planning Application the land will be restored to near existing levels. The LVIA states that “the proposed restoration of the conservation stone quarry will restore the topography of the landscape, creating a landscape which slopes in accordance with the original contours”. I con- sider that more detailed technical information is need to explain the reference to the ‘bulking factor’ referred to in section 3.8.9 of the ES in order to provide confirmation of what the final restoration level would be. Response: Bulking / settlement – it is estimated that net bulking (i.e. after settlement) will be c. 5 – 7.5% for overburden and c. 15 – 20% for limestone waste. On this basis it is estimated that final restoration landform levels (assuming no importation of material) will on average be c. 0.5 – 1.0m lower than original levels. It is considered that the reduced final restoration landform levels will not be significant in terms of land after-use. Phased infilling – PGWA drawings (nos. 9 – 14) give a detailed narrative and illustrate, as far as is reasonably practicable to do so, the phasing of quarry development and backfilling. Temporary perimeter and internal quarry access ramps will be established as necessary on in-situ material and backfill material as quarry development proceeds. Site operating conditions may dictate that the quarry is not developed exactly as illustrated in the drawings and quarry development may involve wider phase strips. However, the principal of minimising the extent of phased excavation and maximising progressive backfilling and restoration will be maintained. Stonepits Quarry, Benefield Figure 2 9. I would recommend that, prior to determination of the application, the submitted Landscape Mitigation Strategy is reviewed and revised to the in order to provide better mitigation for impacts on visual amenity and landscape character. Response: This report covers the issues raised. Restoration and Landscaping 10. A number of the tree species proposed in the Landscape Mitigation Strategy on both the main site and track access are not appropriate because they are not locally native or are non na- tive (such as Prunus cultivars and Ribes sanguieum).