SEW FINAL WRMP ER Appendix 5 HRA
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south east water WRMP14 PROJECT NUMBER: 67951 2014 Water Resources Management Plan HABITATS REGULATIONS ASSESSMENT Screening Report and Appropriate Assessment July 2014 Final WRMP14 HRA Screening Report and southeast~ Appropriate Assessment July 2014 DOCUMENT RECORD SHEET Revision Register Version Date Changes Draft Final v1 19/11/2013 For revised WRMP Draft Final v2 25 /11/2013 Minor corrections Final v3 July 2014 Minor changes to reflect Final WRMP Document Issue Register Version Date Changes iiii WRMP14 HRA Screening Report and southeast~ Appropriate Assessment July 2014 NON-TECHNICAL SUMMARY HRA Stages 1 &2 South East Water is the competent authority responsible for undertaking Habitats Regulations Assessment (HRA) on its Water Resource Management Plan (WRMP) as set out in the Conservation of Habitats and Species Regulations 2010 (as amended). HRA is a multi-stage process which helps determine likely significant effect and assess adverse impacts on the integrity of a European site. This document details the screening and Appropriate Assessment stages of an HRA undertaken of South East Water’s Water Resource Management Plan 2014 (WRMP14). The purpose of the screening stage of an HRA is to identify all aspects of a plan or project which would potentially have a significant effect on a European site, either alone or in combination with other aspects of the same plan or other plans or projects. Where no impact is anticipated (usually because there are no ‘pathways’ between the plan or project and a European site, or because an impact is considered to be not significant) the plan or project can be eliminated from further consideration. Appropriate Assessment involves the consideration of the impacts on the integrity of the European site, either alone or in combination with other plans and projects, with regard to the site’s structure and function and its conservation objectives. Where there are adverse impacts, an assessment of mitigation options is carried out to determine adverse effect on the integrity of the site. HRA screening has been undertaken on the WRMP in accordance with the requirements of the Conservation of Habitats and Species Regulations 2010 (as amended) and following the approach set out for the WRMP process in the UKWIR SEA and HRA guidance (Baker et al, 2012). The approach was also applied through a number of steps during the development of the SEW draft WRMP. There are 43 internationally important nature conservation sites considered by this assessment. The study area included sites within and between the east and west supply areas; downstream of the supply areas; and sites outside the supply areas that support species that could be affected by habitat changes. Factors affecting the integrity of these sites (with regard to their conservation objectives) were reviewed to provide a basis for considering whether the options and plan under consideration might exacerbate any existing adverse trends or affect site integrity. The feasible options were subject to HRA screening to determine if they are likely to adversely affect internationally important nature conservation sites (European sites, candidate and potential European sites, and Ramsar sites) either alone or in combination with other plans or projects. A total of 136 options were assessed during this preliminary screening stage. This screening provided information influencing the option appraisal and selection process for the plan, alongside other issues. Of the 136 feasible options assessed, 27 resource or transfer options (and sub options) have been included in WRMP14. Of these options, 23 are considered unlikely to result in a significant impact to a European site and need not be considered for Appropriate Assessment. These options have been screened out because there are no pathways to European sites and/or the level of impact is not considered to be significant or can be mitigated. iiiiii WRMP14 HRA Screening Report and southeast~ Appropriate Assessment July 2014 Following the screening stage including an updated cumulative assessment and review of options amendments, four options at three locations (EF-11, TR-22/TR-22a, and TR- 136a) were considered likely to result in significant effects to a European site either alone or in-combination with other plans or projects, or because sufficient uncertainty existed whereby the potential for significant effects could not be ruled out; these options were subject to Appropriate Assessment. EF-11 (Aylesford water re-use at Aylesford) was screened in due to effluent discharge into the River Medway at East Barming which although located in excess of 15km upstream cannot be ruled out as having a significant effect on the Medway Estuary and Marshes Special Protection Area (SPA)/Ramsar. The scheme is planned to be implemented for 2023. TR-136a (Windsor to Surrey Hills transfer option) was screened in because of the potential extension to the water service reservoir at Surrey Hills which lies wholly within the Thames Basin Heaths SPA. The route of the proposed transfer pipeline is also located within close proximity to Windsor Forest and Great Park Special Area of Conservation (SAC). The option is planned for implementation in 2030. TR-22/TR-22a (Detling to Matt’s Hill transfer options) was screened in due to the proximity of the proposed pipelines to North Downs Woodlands SAC and Queendown Warren SAC. These options are planned for implementation in 2022. Due to the complexity of modelling or studies required to assess the significance of impacts associated with EF-11 (to Medway Estuary and Marshes SPA and Ramsar) and TR-136a (to Thames Basin Heaths SPA), and given the late delivery date of these options within the WRMP, a ‘’down the line’’ assessment is proposed. In the event that no adverse effects on integrity cannot be concluded, South East Water commits to bringing forward suitable alternatives with all options subject to a Habitats Regulations Assessment. Significant impacts associated with TR-22 and TR-22a (to Queendown Warren SAC and North Downs Woodland SAC) have been ruled out as the implementation of standard best practice guidelines and pollution prevention measures would be sufficient to ensure that the integrity of the respective sites is not adversely affected. Influencing the development of the WRMP The potential for significant impacts on Natura 2000 sites has been an important consideration all the way through the development of the potential WRMP along with other environmental issues as described in Section 7 of the Environmental Report and Appendix 7 to the WRMP. The key steps were as follows: Initial option identification - potential for direct loss to Natura 2000 sites was one of the criteria used to screen-out potential reservoir locations. New pipeline routes aimed to avoid Natura 2000 sites. These were set as the identification criteria and used in GIS analysis of possible sites/routes. For example, the route for the TR77 pipeline, now part of SW14 (Broad Oak), was routed around the Blean Complex SAC to avoid potential effects. Development of the feasible options list - this was undertaken through further option definition and desk study on environmental constraints and discussion with iviv WRMP14 HRA Screening Report and southeast~ Appropriate Assessment July 2014 stakeholders. A number of options with potential significant impacts on Natura 2000 sites were removed as part of this process. Examples include: Faversham groundwater abstraction with potential impacts on the North Kent Marshes; and the Woodgarston, Monkwood and Lasham groundwater abstraction options with potential risk to the River Itchen SAC. In addition a transfer option which was routed through Ashdown Forest SAC following an existing pipeline was identified as being unacceptable and was highlighted as requiring an alternative route. Possible routes to the north of the SAC were added to the option dossier. HRA Stage 1 & 2 - this was undertaken on the Feasible Options List and highlighted the potential for significant effects from the Windsor to Surrey Hills transfer reservoir extension, and Aylesford water reuse schemes to Natura 2000 sites. This has highlighted the need to consider variants to the transfer option further and undertake ’down the line’ assessment in AMP6 for both schemes. The Matt’s Hill to Detling transfer option was screened in by the HRA following rerouting to avoid the pipeline passing through an SSSI which had the effect of bringing it closer to a SAC. The plan level Appropriate Assessment for this option is included in the HRA Report. This identified mitigation is required to avoid significant effects during construction which are covered by the option costs. ‘Down the line’ assessment – the HRA Report identified that ’down the line’ Appropriate Assessment would be required for Aylesford water reuse and the Windsor to Surrey Hills transfer. These will be undertaken in the next AMP/WRMP cycle. If this shows that it would not be possible to avoid a significant effect on a Natura 2000 site, an alternative option (or options) that has been screened as not likely to have a significant effect will be brought in. Triggers for bringing in alternatives options – these are identified in Section 8 of the Environmental Report and the WRMP, including the need to bring in alternative assessment where ’down the line’ Appropriate Assessment indicates that significant effects could not be avoided. AMP 6 Additional studies on key Preferred Plan options - a range of studies and investigations have been identified in the WRMP and Environmental Report as being required during AMP6. These include more detailed feasibility studies for the strategic options, the East Kent Strategy and further transfer options. These will incorporate the ’down the line’ assessments identified in the WRMP14 HRA and additional HRA for any new East Kent Strategy options. The SEA and HRA have influenced the option costs to ensure allowance is included for undertaking HRA and for implementing required mitigation and enhancements, for example the cost for taking forward the Aylesford water reuse scheme specifically includes an allowance for the ’down the line’ assessment.