Bristol Water Drought Plan 2018 Appendix
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June 2018 Bristol Water Drought Plan 2018 Appendix June 2018 Document Control Sheet Report Title: Bristol Water Drought Plan 2018 Appendix Release Date: June 2018 Report Status: Final Report Author(s): Liz Cornwell Related Reports: Bristol Water: Draft Final Drought Plan (July 2017) Bristol Water: Water Resource Management Plan (June 2014) Distribution List: Internal: Mel Karam, David Smith, Ben Newby, Patric Bulmer, Iain McGuffog External: Defra, Environment Agency, Natural England, Ofwat Document History Version Authorised Approved Date 7th July 2017 DRAFT FINAL Keith Hutton Patric Bulmer 21st June 2018 FINAL Iain McGuffog Patric Bulmer 2 bristolwater.co.uk June 2018 Appendix A Supply side options removed from the drought plan In response to our review and update of the drought plan, a number of supply side options have been removed from the drought plan that were presented in our October 2012 drought plan. The table below identifies the options that have been removed and the reason for their removal. Option name and description Reason for removal from drought plan Gurney Slade (2Ml/d) – installation of Removed from drought plan as licence temporary membrane plant required to has been revoked overcome poor water quality issues. At least 6 months lead in time Shipton Moyne (1Ml/d) – modification to Removed from drought plan as licence treatment works and operating rules to variation under negotiation in line with allow additional abstraction Wessex Water NEP requirements Cold Bath Spring (3Ml/d) – winter only Removed from drought plan as licence source due to water quality reasons revoked due to high risk water quality issues 3 bristolwater.co.uk June 2018 Appendix B Drought Options Summary Forms 4 bristolwater.co.uk June 2018 Option Name Appeals for restraint Trigger(s) Developing drought - Entering drought (or preceding actions) i.e. conditions before management zone 3. the drought actions is implemented Demand saving (%) or deployable output Approximately 1% of household water of option (Ml/d) demand. Location Whole supply area. Implementation timetable Preparation time 1 week. Most Preparation time, time of year effective, effective during hot weather (late duration spring and summer). Permissions required and constraints None required – at water company Including details of liaison carried out with discretion. bodies responsible for giving permits or approvals Risks associated with option Uncertainty over customer response and demand savings that will be Option Implementation Assessment Implementation Option realised. Careful messaging required (see Communications Plan). Risk to the environment (high/medium/low None. or unknown) and how this has been assessed Summary of likely environmental effects None. (including details of features of moderate and major sensitivity and minor sensitivity features from designated sites) Assess the likely impact of WFD ecological and chemical status Summary of additional monitoring N/A requirements before application Environmental Assessment Environmental Mitigation and compensation measures N/A Effects on other activities e.g. fisheries or None. industry 5 bristolwater.co.uk June 2018 Option Name Temporary Use Bans Trigger(s) Drought – Entering drought management (or preceding actions) i.e. conditions zone 4. before the drought actions is implemented Demand saving (%) or deployable Up to 9.5% of peak summer household output of option (Ml/d) demand. Location Whole supply area. Implementation timetable 2 week public consultation on the TUBs Preparation time, time of year effective, restriction proposals. duration Up to 3 weeks from decision to impose a TUB and being able to implement it. Permissions required and constraints None required but liaison with Including details of liaison carried out with Environment Agency, CCW and Defra will bodies responsible for giving permits or be carried out. approvals Risks associated with option Effectiveness of the TUBs restriction. Option Implementation Assessment Implementation Option The resources required to effectively monitor and enforce the restriction. Public relations as a result of imposing a restriction on customers. Risk to the environment None. (high/medium/low or unknown) and how this has been assessed Summary of likely environmental None. effects (including details of features of moderate and major sensitivity and minor sensitivity features from designated sites) Assess the likely impact of WFD ecological and chemical status Summary of additional monitoring N/A Environmental Assessment Environmental requirements before application Mitigation and compensation measures N/A Effects on other activities e.g. fisheries None. or industry 6 bristolwater.co.uk June 2018 Option Name Drought Order - Non-Essential Use Ban (NEUB) Trigger(s) Drought – Entering drought management (or preceding actions) i.e. conditions zone 5. before the drought actions is implemented Demand saving (%) or deployable Up to 2% of non-household demand across output of option (Ml/d) the year. Location Whole supply area. Implementation timetable 2 to 3 months – time for drought order Preparation time, time of year effective, application and determination, duration communication with public, time to place adverts in newspapers and send prohibition notices. Maximum duration 6 months before extension required. Permissions required and Drought order from Defra. constraints Including details of liaison carried out Public Hearing may be required. with bodies responsible for giving Option Implementation Assessment Implementation Option permits or approvals Risks associated with option Negative impact on affected businesses. Uncertainty around effectiveness of drought order. Defra may not issue the drought order. Public relations as a result of imposing the restrictions. Risk to the environment None. (high/medium/low or unknown) and how this has been assessed Summary of likely environmental None. effects (including details of features of moderate and major sensitivity and minor sensitivity features from designated sites) Assess the likely impact of WFD ecological and chemical status Summary of additional monitoring N/A requirements before application Environmental Assessment Environmental Mitigation and compensation N/A measures Effects on other activities e.g. Negative impact on affected fisheries or industry industry/business. 7 bristolwater.co.uk June 2018 Option Name Emergency Drought Order Trigger(s) Severe drought – Entering drought (or preceding actions) i.e. conditions management zone 6. before the drought actions is implemented Demand saving (%) or deployable Unknown – possibly up to an additional 8% output of option (Ml/d) of peak summer household demand (on top of TUBs). Location Whole supply area. Implementation timetable 12 weeks (3 months): Preparation time, time of year effective, 10 weeks preparation time, public duration consultation, possible public hearing and determination by Secretary of State. 2 weeks implementation time on the ground. Permissions required and Emergency drought order issued by the Implementation Assessment Implementation Secretary of State. constraints Including details of liaison carried out Public Hearing may be required. with bodies responsible for giving Option Option permits or approvals Risks associated with option Uncertainty around effectiveness of emergency drought order. Secretary of State may not issue the emergency drought order. Public relations as a result of imposing the restrictions. Risk to the environment None. (high/medium/low or unknown) and how this has been assessed Summary of likely environmental None. effects (including details of features of moderate and major sensitivity and minor sensitivity features from designated sites) Assess the likely impact of WFD ecological and chemical status Summary of additional monitoring N/A requirements before application Environmental Assessment Environmental Mitigation and compensation N/A measures Effects on other activities e.g. None. fisheries or industry 8 bristolwater.co.uk June 2018 Option Name Honeyhurst & Rodney Stoke (Well head) Trigger(s) Drought – Entering drought management zone 4. (or preceding actions) i.e. conditions before the drought actions is implemented Demand saving (%) or 2.4Ml/d dry year annual average yield. deployable output of option (Ml/d) Location Water to be pumped (via new pumping station) 4.2km into Cheddar Reservoir and treated at the water treatment works for supply. Implementation timetable Up to 6 months. Preparation time, time of year effective, duration Some pre-planning feasibility work already carried out. Permissions required and The source is licenced for 4.11 Ml/d annual average, constraints but has not been used for c. 20 years and we will have Including details of liaison to give regard to the ‘no deterioration’ principle set out Option Implementation Assessment Implementation Option carried out with bodies in the Water Framework Directive when considering responsible for giving changes to the operation of the sources. permits or approvals Risks associated with Water quality issues. option Timing of getting the source into supply in response to a drought situation. Risk to the environment Low. (high/medium/low or unknown) and how this has been assessed Summary of likely Honeyhurst well is not within any biodiversity environmental effects designations. There are a number of designated sites (including details of features nearby including Rodney Stoke NNR/SSSI (~1km to of moderate and major the east), Draycott Sleights SSSI (~1km to