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We will cover:. What happened in Gloucester?TimelineResponse to maintain water suppliesRecovery of the Water Treatment plantRecovery of service to customersWorking in Gold CommandOur new approach to resilience and response planning. What happened?. Unprecedented rainfall over Severn and Avon catchmentsRiver levels in Tewkesbury higher than ever seen beforeUtility infrastructure inundatedControlled shut down of Mythe WTWWater supplies switch to tankers, bowsers and bottled waterBigges1139
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1. Martin Kane, BSc, C.Eng, C.Env, MICE, MCIWEM, FIWO.
Director of Customer Relations
Severn Trent Water
3. What happened? Unprecedented rainfall over Severn and Avon catchments
River levels in Tewkesbury higher than ever seen before
Utility infrastructure inundated
Controlled shut down of Mythe WTW
Water supplies switch to tankers, bowsers and bottled water
Biggest Operation ever undertaken by a UK Utility Company (by some distance!!)
6. Transport Infrastructure:
7. Castlemead, (Central Networks)
8. Mythe WTW, (STW)
9. Operation Outlook Instigated Chief Constable Gold Team
Strategic Intentions:
Preserve life
Provide for the safety and reassurance of the public
Minimise damage to property
Minimise disruption and alleviate distress
Restore normality
10. Alternative supplies - bowsers Distribution hub at Staverton Airport
More than 150 tankers operating at any single point in time
Around 1,500 bowsers mobilised
Largest number ever used in a single incident in the UK
Bowsers on loan from other companies
Initial problems in meeting high demand
Average three fills a day
11. 24 Hour Team, Staverton Airfieldtanker and bowser operation
12. Bowser deployment in the community
13. Alternative supplies:bottled water hub Cheltenham Racecourse
14. Alternative supplies : bottled water local distribution site
15. Time Line Friday 20 July
Unprecedented levels of rainfall.
Major incident declared and Gold formed under Police co-ordination (STW not involved at this stage)
STW issues emergency weather warning to works managers, triggering the normal operational response
Sewage incident room opened to manage and respond to flooding
Over 300 Sewage Pumping Station wet well alarms received in Gloucestershire
Saturday 21 July
Flooding throughout Gloucestershire
EA predictions suggest Mythe will not flood
However, flood preparations at Mythe as river levels rise
Sunday 22 July
Mythe WTW flooded controlled shutdown commences (0145hrs) and site evacuated (0600hrs)
Tankering and sourcing/deployment of bowsers commences, together with preparations for return to site
Customer website fails: returned to service in the evening
Walham and Castlemead electricity stations also under threat
STW join Gold Command
16. Time Line Monday 23 July
70,000 properties without mains water - a further 70,000 properties under threat
250 bowsers deployed
150,000 litres of bottled water distributed via Tescos and Sainsburys
23 Sewage Pumping Stations not working due to power failure or flooding
Castlemead power sub station fails.
Tuesday 24 July
140,000 properties without water
Flood levels receding partial access to Mythe regained
400 bowsers deployed
3 million bottles of water sourced per day for deployment
27 Sewage Pumping Stations not working due to power failure or flooding
Walham stable and cautiously optimistic
Castlemead Power sub station restored
17. Time Line
Wednesday 25 July
Full access to Mythe regained - restoration work commences
900 bowsers deployed
4 million litres of bottled water sourced per day for deployment
21 Sewage Pumping Stations and 1 Sewage Treatment Works not working
Chief Superintendent into STW HQ to assist with Command and Control
Reinforcement of flood defences at Walham agreed through use of hesco bastions
Saturday 28 July
Plant checks and repairs complete at Mythe
Mythe starts pumping operations and commences filling service reservoirs
Severe weather and flood warnings for area early evening and overnight
1,500 bowsers deployed, 300 damaged
Bowser fill rate of 3 times per day being achieved
Bottled water stocks maintained to meet demand
Suspension of 65 hour working restrictions within STW
STW donates 50,000 to Gloucestershire Flood Appeal
Walham defence complete.
Sunday 29 July
Semi permanent flood defences at Mythe primarily complete (minor additional bolstering work required)
Level of bowsers (net of damaged bowsers) maintained at approx. 1,200
Refill rate of 3 times per day being achieved
Bottled water stocks maintained to meet demand
3 Sewage Pumping Stations not working
18. Mythe WTW
19. Mythe WTW Semi-permanent barrier around Mythe built with Military support in place by 29 July,1km long built in c.24 hours.
( Would normally take 2 years to do a project like this!!)
21. Time Line Thursday 2 August
All properties reconnected (do not drink) by 0545hrs
Water still available from bowsers and through bottled supplies
Friday 3 August
All areas given boil water notice
Quality sampling programme ongoing to enable move to safe to drink
Monday 6 August
Full automatic control of Mythe WTW regained
Tuesday 7 August
Customers given safe to drink notice
Wednesday 8 August
STW says thanks to the community and announces 3.5m donation to assist affected communities in recovering from the incident
Cost of incident estimated at 25-35 million, offset by insurance of between 10-20 million
17-20 September
Customer drop in events - Gloucestershire
22. Contingency Crisis Management
23. Gold Command:The Daily Routine for STW(once we had got our act together) 06.00 STW Chief Exec. led conference call, (I had to chase the notes of these sessions most days in order to be able to prepare briefing paper for Gold).
Reviewed yesterday, detailed plan for today, view forward for emerging issues, prepare briefing paper
09.00 Brief Gold Command team
Review plan following Gold input
11.00 COBRA teleconference
11.00 Prepare script for media briefing
12.00 Media briefing, live to air BBC News 24, SKY and local TV and radio.
13.00 Do one off media interviews 9tv and radio) , typically 2 or 3 each day
15.00 STW Conference call
15.30 Prepare briefing note for Gold
16.00 Gold team review and re plan as necessary
As well as coordinating information requests and action requests from all other parties at Gold and dealing with requests from STW for Gold assistance.
Shift pattern of 02.00 to 14.00, with 30 min handover with Director leading media input at 12.00 each day
24. Summarising: Observations around Gold Team STW arrived 2 days after most others
As a Cat 2 responder we had not been involved with many emergency planning exercises, and had never been at the centre of one!!
LRF was not known to us, we did not know anybody from the other agencies, but they all seemed to know each other. The ability to build relationships quickly is critical.
Technical proficiency builds confidence.
We did not know what was expected of us in terms of manpower, level of seniority and how this aligned with our own emergency response plans
We had great difficulty getting information from STW in the first few days (eg. 2 days to get DMA plans and then they did not match the DMA schedules, late delivery of notes from the morning briefings which put pressure on the delivery of the briefing for Gold meetings, failing to provide tankered water to Police HQ when requested, slow response to requests for information or actions following Gold meetings.)
We had little understanding of the information requirements of Gold Command (or COBRA)
We did not understand Silver at all at the beginning
Gold has a media cell and there was a feeling that we always wanted to do our own thing and did not willingly participate in the wider briefing to all residents
It is a high pressure environment with visits from Government Ministers, local MPs, County and District council Chief Execs. each with their own agenda, which was not always obvious.
We learned how to operate in this environment by day 3 and were effective from then on
25. Differences between a PLc and others at Gold Duties of Directors eg. H&S
Disclosure rules to Stock exchange
Corporate Governance
Corporate Responsibility
Relationships with all stakeholders and act with best interests of them in mind
Ethical standards and behaviours
Perception that we had unlimited amounts of cash and nobody else had any money!!
26. Severn Trent Water Services Team.Enhanced Resilience and Contingency Planning:
27. Defence Flood risk assessments at 65 water and over 400 waste sites
Temporary defences installed at 4 sites
Further measures included in next investment period for regulator approval
29. Contingency:Crisis Management External multi-agency training
CMT desktop exercise
Reissue of CMT manual
New multi-agency handbook produced
30. Tactical response improvements
Currently undertaking 1.5 million investment programme including
10 new rigid tankers
Delivery tankers some with tap bars
600 new bowsers
Modifications to 300 existing bowsers
Logistics support contract using hub and spoke concept
Invocation packs
Improvements to depot sites
Bottled water supply contracts
All documentation on Networked PCs for rapid and consistent deployment
31. And bowser deployment plans for each area Pre-planned bowser locations
1 bowser for every 330 people, 80% of the population should be within 300metres of bowser location
Risk assessed & agreed with stakeholders
Safe and accessible for public
Logistically accessible
Activity plans in place
chlorination, fill, primary movement
Drawings of physical site set up.
Management controls, traffic volume controls
32. And bottled water distribution plans for each area Strategic storage locations and volumes
Designated suppliers
supplier database: availability, flexible contracts secured, prices, exceptions
Assessed hand out locations
within 2.5 miles of every customer in an urban area and 10 miles of every customer in a rural area
Inbound plan
Time schedules (plan for no holding facility straight to customer distribution locations)
Empty pallet control plan
Site infrastructure plan
Operators : link with Local Authorities as distributors , Signs and barriers , Lighting , Traffic control, Security
Home delivery schedules
33. Strategic Issue : Resilience of our Network Context
The flooding incident in Gloucestershire highlighted that we have inherent risks built into our network that are no longer acceptable to our customers
The frequency and intensity of rainfall is impacting on the resilience of our assets
SDS Position
We identified the need to improve the resilience of our strategic network to reduce the risk of customers losing water supply
DBP Proposal
To reduce the risk of pops >20,000 being reliant on a single piped supply
To reduce likelihood of failure by protecting WTWs at risk of flooding from a 1 in 200 year event
To reduce likelihood of failure by removing single points of failure from our critical sites
To reduce likelihood of failure by providing resilient power supplies
To reduce the risk of pops. > 20,000 being reliant on a single source of water
34. Strategic Issue: Sewerage Service Context
Nuisance general reduction in public tolerance of odour nuisance
Resilience Greater expectations to protect service position during more extreme events post Gloucester 2007
SDS Position
We need to increase the resilience of our assets to cope with greater extremes of weather driven through climate change.
We will aim to eliminate the potential for odour to be a significant nuisance.
DBP Proposal
Nuisance deliver a proactive programme to address existing and areas of likely complaints in line with the DEFRA code of practice.
Resilience reduce the risk of major pollutions caused by flooding, fire and power failure
35. Response plans have been developed for all identified critical Water Treatment sites.
Interim flood defence measures have been installed at sites with a potential to flood.
Network reinforcement schemes are being promoted to eliminate the risk due to single points of failure in our infrastructure. This was a significant part of our PRO9 Business Plan which our customers supported and we hoped our Regulator will support. Reality, substantial support, however some items not supported due to low returns on cost benefit analysis.
As a Cat. 2 responder we need to be included in a wider range of LRF activity to gain an understanding of how it works, and this is underway.
We provided sufficient water to maintain basic standard of living and hygiene to 350,000 customers: we have documented this with the LRFs for future events, wherever they might occur in our region
Emergency measures directive of 10 l/head needs review and should include 10l/head bottled water and 10l/hd bowser supply.
Alternative supplies capability without mutual aid is unrealistic. We had assistance from many other water companies and our contractors
We have provided a full Report and given evidence to the many public enquiries following the events in Gloucestershire. We would not wish others to have to endure what we and our customers went through in 2007