Yorkshire Water PR19 Submission | WINEP3 technical appendix 1 Appendix 8g PR19 WINEP Technical Appendix Yorkshire Water PR19 Submission | WINEP3 technical appendix 2 Introduction ................................................................................................................................................................................... ............................................. 555 1.1 Purpose of the document ............................................................................................................ 5 1.2 What is the WINEP3? ................................................................................................................... 5 WINEP: a source to sea overview ................................................................................................................................................................. ... 888 2.1 Drinking Water Protected Areas (DWPAs): uplands; water sources and habitats ..................... 8 2.2 Biodiversity ................................................................................................................................... 9 2.3 Water Framework Directive (WFD) measures and Heavily Modified Water Bodies (HMWB) .. 10 2.4 Drinking Water Protected Areas (DWPAs) Lowland water sources ........................................... 11 2.5 Wastewater impacts .................................................................................................................. 12 2.6 Customer and community benefits ........................................................................................... 16 2.7 Working in partnership .............................................................................................................. 17 2.8 Catchment Sense ............................................................................................................................ 18 Key issues and information about our WINEP ............................................................................................ 222222 3.1 Our approach to efficiency in phosphorous removal ..................................................................... 23 3.2 Application of regulatory accounting guidelines (RAG) .................................................................. 26 3.3 Other drivers and measures in the plan ......................................................................................... 26 3.4 Cost summary of the WINEP business case proposals ................................................................... 26 3.5 Customer priorities and stakeholder support ............................................................................ 28 3.6 Benefits assessment of the plan ................................................................................................ 29 3.7 Compliance with regulatory guidance ....................................................................................... 30 3.8 Performance commitment and outperformance delivery incentives ....................................... 32 3.9 Performance Commitments ....................................................................................................... 33 3.10 Use of markets and direct procurement contracts ................................................................ 40 3.11 Direct procurement for customers (DPC) ............................................................................... 41 3.12 Our proposed WINEP unit cost adjustment mechanism ........................................................ 41 3.13 Phasing of the plan ................................................................................................................. 58 3.14 Transitional expenditure (Pre- 2020) ..................................................................................... 60 3.15 Whole programme considerations ......................................................................................... 61 Drinking water protected areas .................................................................................................................................................................. ...... 656565 4.1 Summary ......................................................................................................................................... 66 4.2 Resilience and catchment management ......................................................................................... 67 4.3 Research to inform our catchment activity .................................................................................... 68 4.4 Impact of land ownership on our ability to act .......................................................................... 68 4.5 Legislative drivers ............................................................................................................................ 69 4.6 Hazard identification and risk characterisation - raw water risks to drinking water quality .......... 70 4.7 Catchment Interventions for WINEP............................................................................................... 80 4.8 Catchment management summary ................................................................................................ 92 4.9 Intervention costings ................................................................................................................. 94 Water resource drivers .............................................................................................................................................................................. .............. 959595 5.1 WFD Measures ........................................................................................................................... 95 Yorkshire Water PR19 Submission | WINEP3 technical appendix 3 5.2 WFD fish passage ....................................................................................................................... 98 5.3 Invasive Non-Native Species (INNS) ......................................................................................... 100 5.4 Natural Environment and Rural Communities Act ................................................................... 104 5.5 Sites of Special Scientific Interest (SSSI) ................................................................................... 108 5.6 Habitats Directive – Derwent ................................................................................................... 111 Groundwater resource investigations .............................................................................................................. 114114114 6.1 Saline intrusion - Hull .................................................................................................................... 114 6.2 Groundwater Resource Assessments – Doncaster, Selby, Hull, Wolds wellfields ................... 116 Water quality drivers ––– measures for Wastewater Treatment ...................... 119119119 7.1 U_IMP1: Urban Waste Water Treatment Directive >2000 PE ................................................. 119 7.2 Urban Wastewater Treatment Directive – Flow drivers .......................................................... 121 7.3 UIMP2: Urban Waste Water Treatment Directive – Sensitive Area Designations for Eutrophication .................................................................................................................................... 124 7.4 Water Framework Directive – Improvements in phosphorous to Moderate and Good ecological status .................................................................................................................................. 133 7.5 Water Framework Directive – Improvements in ammonia to moderate and good ecological status 145 7.6 Water Framework Directive – No deterioration ...................................................................... 147 Approach to treatment costing and quality assurance ............................... 150150150 8.1 Introduction ............................................................................................................................. 150 8.2 Phosphorous removal – Chemical Precipitation ...................................................................... 154 8.3 Additional Assets ...................................................................................................................... 155 8.4 Phosphorous Removal: Biological Nutrient Removal .............................................................. 156 8.5 Primary Sludge Fermenter ....................................................................................................... 157 8.6 BNR Bioreactor ......................................................................................................................... 157 8.7 Tertiary Solids Capture Unit ..................................................................................................... 158 8.8 Chemical Dosing for process optimisation and operations in abnormal conditions ............... 159 8.9 Whole Life Cost Assessment for P removal – Chemical vs Biological ...................................... 160 8.10 P removal – transfer discharge ............................................................................................. 164 8.11 Solution Capital Costing ........................................................................................................ 164 8.12 Inputs ...................................................................................................................................