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Martin Key Presentation to Scottish Noise and Nuisance Conference, 6 October 2006

Odour Code of Practice – An Update. Martin Key Presentation to Scottish Noise and Nuisance Conference, 6 October 2006. The Odour Code of Practice. Life Before the Odour Code of Practice. Difficulties enforcing Environmental Protection Act 1990 at WWTW throughout UK

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Martin Key Presentation to Scottish Noise and Nuisance Conference, 6 October 2006

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  1. Odour Code of Practice – An Update Martin Key Presentation to Scottish Noise and Nuisance Conference, 6 October 2006

  2. The Odour Code of Practice

  3. Life Before the Odour Code of Practice • Difficulties enforcing Environmental Protection Act 1990 at WWTW throughout UK • EC Directives on Water Quality driving enhanced treatment • Volume of complaints increasing annually • Parliamentary pressure for new legislation

  4. Developing the Odour Code of Practice • Formation of SOSG (Scottish Odour Steering Group) with representatives from: • Scottish Water • Local Authorities • Water Industry Commission • WaterWatch (formerly WCCP) • SEPA • REHIS • Scottish Executive-Environment & Planning officials and an Independent Consultant • Voluntary Code of Practice in April 2005 • Water Services etc (Scotland) Act 2005 power to make statutory Sewerage Codes for assessing, controlling and minimising sewerage nuisance • Sewerage Nuisance (Code of Practice)(Scotland) Order 2006 dealing with odour from WWTW

  5. Principles of the Code of Practice • Guidance on odour nuisance assessment - Odour Risk Assessment Matrix • Hierarchy of controls • Management and houskeeping • Design, installation and maintenance • Optimisation of WWTW operation • Containment • Extraction of odour and end-of-pipe treatment • Implement on a stepwise basis to avoid ‘goldplating’

  6. Sewerage Nuisance (Code of Practice)(Scotland) Order 2006 • Baseline management and housekeeping requirements • Preparation of a phased Odour Management Plan (OMP) (>500pe) • If odour nuisance still exists, prepare Odour Improvement Plan (OIP) • Implement measures reflecting BPM from OIP within approved timescales - Balance capital and operating costs with odour significance and impact and avoid disproportionate escalation • Specifies odour abatement equipment efficiency

  7. OMP – Phase I • Produced and adopted by 1 August 2006 • Generic plan • Summary of WWTW location, receptors, sources and process overview • Management responsibilities (faults, maintenance etc) • Complaints reporting and response procedure • Inspection and maintenance procedures • Spillage management • Operator training • Record keeping (who, what, when, where) • Emergency breakdown response including liaison with LA

  8. OMP – Phase II/III • Phase II - ‘standard’ operational and management procedures for the type of plant and equipment in use at a WWTW – 1 January 2007 • Phase III adapts the ‘standard’ to be specific for a particular WWTW – 1 April 2007 • In the absence of continuing odour nuisance, Phase III OMP defines BPM for the WWTW • Will lead to revised operating methods and require a culture change – facilitated by management • Format for ease of use and supported by training • Living document - updated regularly and reviewed every 12-months

  9. Odour Improvement Plans • Systematic evaluation of the sources and causes of odour nuisance and a review of all available control options to develop a plan detailing the proposed measures to mitigate odour nuisance that reflect best practicable means’ • Phased programme for investigation and implementation • Process optimisation • Inlet works • Sludge handling • Storm tanks • Primary sedimentation • Phase 1 submitted by 1 April 2007 • OIP content subject to LA approval

  10. Implementing the Odour Code of Practice • Scottish Water actively working on OMPs and OIPs • Odour now as level of service indicator for Scottish Water – Q&SIII 35 sites • Complaint Management • LA Inspection programme – based on risk assessment • >2000 works in total ; ~400 require regular inspection • LA Enforcement – able to serve enforcement notices for breach of Code

  11. Supporting Implementation – The Role of SOSG • Oversee the production and implementation of the Code • Identify and prioritise the 35 worst offending sites Q&SIII • Act on behalf of and report to the Capital Monitoring Group on odour and oversee and sign-off the agreed abatement at the 35 sites • Support LA enforcement through on-going training • Facilitate a web-based ‘Odour Hub’ to act as a central clearing house for all complaints

  12. Odour Code of Practice – An Update Thank You

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