Mouchel proposal for The Coal Authority: Remediation Scoping Study of the treatment of Coombe discharge, Gwindra

For: Tom Mills, Coal Authority

On behalf of: Piers Sadler, Mouchel

November 2014 The Coal Authority – Gwindra Scoping study Mouchel Proposal

Introduction This document sets out Mouchel’s proposed approach and methodology for the Gwindra Scoping Study in response to The Coal Authority’s Invitation to Tender, document reference CA18/2311/139.

Understanding the project brief Historic metal mines impact the water quality of the River Fal catchment in Cornwall. As part of the Water Framework Directive Abandoned Metal Mines Project the Environment Agency has investigated surface water quality of the River Fal tributaries to identify the sources of metal pollution. The Environment Agency identified non-compliant zinc concentrations at their Gwindra at Treway Bridge monitoring location in the 2011/12 survey. This led to a more detailed investigation of the Gwindra stream in 2013 with the principal sources being expected in the Coombe village area due to the mining history. A site inspection in January 2013 discovered an adit discharging into the Coombe stream (a tributary of the Gwindra). Subsequent water monitoring results led to the development of a conceptual model for the Fal river catchment and confirmed the Coombe Adit as one of the principal sources of zinc pollution. The Coombe Adit is expected to draw mine water from the Great Dowgas Mine, a former tin and copper mine which also produced pyrite, some cobalt and nickel ores. . The provided EA South West River Basin District, Mining Pollution: Catchment Characterisation report (River Fal and Gwindra stream) presents measured metal concentrations exceeding the Water framework Directive standards for zinc, cadmium, copper, nickel and iron at the Coombe Adit discharge which significantly affect the Coombe stream quality. The report concludes that treatment of the Coombe Adit discharge is expected to make a significant improvement to the quality of the Coombe stream and Gwindra stream. This Scoping Study is to: • review existing site information • confirm the conceptual model • identify and evaluate options to capture, transfer, treat and discharge mine water discharge at Coombe Adit • confirm that remediation is a feasible option for this point source • highlight constraints to taking a mine water treatment scheme forward • identify and specify required surveys, assessments and fees for a recommended preferred option to be presented to the Coal Authority and Environment Agency for approval to proceed to feasibility stage.

Proposed methodology Project scope and methodologies A detailed description of the project scope is provided in Appendix A of the Coal Authority Invitation to Tender. Mouchel will deliver the indicated scope. Additional comments or particular methodologies are described in the following sections. S1: Start up meeting The start-up meeting at the site is essential to agree on the deliverables but also to make exchange of information or data an efficient process. Planned actions and programme for discharge flow and quality monitoring are also worthwhile discussing at the meeting. The start-up meeting will be attended by Piers Sadler and Steve Colebrook. S2: Site walk over A detailed site walk over undertaken by the relevant technical experts is essential to identify environmental and technical constraints which require further investigation. However, this will require some of the available information to be reviewed first so that time on site can be used in a productive manner. Flow gauging of the discharge has been mentioned as an issue and calculated flow rates over the short monitoring period in winter 2013 have been highly variable. This is likely to require further inspection, also to confirm that mine water is predominantly discharging through the adit rather than via general seepage through the ground. We understand that the Coal Authority is implementing measures to monitor flow rates soon. S3 Review of Characterisation study We will undertake a detailed review of the data and assessments presented in the EA’s characterisation report as requested. In addition we will undertake the following tasks (some of which are listed under S5 of ITT Appendix A): • request a Groundsure report for the site • request the mine plans and mining information related to this site hold by West Country Mining and Property Surveys (unless the EA or the Coal Authority have the full information available). We have assumed that some The Coal Authority – Gwindra Scoping study Mouchel Proposal

information is exclusively held by West Country Mining and Property Surveys and other information is available at the Coal Authority’s Mansfield office. • a detailed review of the information above and assessment of the local geology and hydrogeology • in addition to the conceptual model presented in the characterisation report this will allow the development of a conceptual model for the mine water discharge and this particular site. Considering the variable flow data presented in the characterisation report with only limited effect on the hydrochemical composition of the discharge suggests that a good understanding of the mine water catchment is important to enable cost savings and to reduce risks when assessing treatment options. S4 Appraisal of remedial options Mouchel will undertake and present this as part of an options appraisal spreadsheet highlighting risks, uncertainties and required surveys/assessments. Aqua Enviro will provide specialist input on the actual treatment options based on the hydrochemical characterisation provided by Mouchel, aiming in an iterative process with the Mouchel teams, towards a preferred option. If there is more than one feasible option we will involve the Coal Authority in the discussion at an early stage. We will also explore the opportunities for innovative (passive or semi passive) treatment techniques by initial liaison with Cardiff University (e.g. adoption of the VFR for metal mine water treatment). The options appraisal will need further considerations during the feasibility stage as required targeted site surveys or further assessments will be identified during the scoping stage. S5-S7 We have no additional comments. Project Programme The project programme in line with requested timeframes is attached to this document. The programme will be reviewed, discussed and updated as the project progresses, in particular during the monthly progress reviews. Constraints The constraints plan will begin at the scoping stage with key constraints that affect all potential treatment sites (SSSI, AONB, power supplies, etc.) or potentially affect a particular site of interest. This will gradually be honed down to the constraints associated with favoured treatment sites and options and detail about the constraints such as flooding, ecology, topography, ground conditions, access, power, heritage etc. will be added through the project. Risk and Opportunity Register We will set up a Risk and Opportunity Register at the beginning of the project. The project specific risks to implement an efficient treatment option seem to relate to a good definition of the source term (flow and quality over time) and understanding of the contribution of diffuse sources. Considering the variable flow data (with minimal change of water quality) there might be an opportunity of diverting flows in the catchment reducing the treatment requirements.

Sustainability and Innovation The Coal Authority has a medium to long term goal of zero cost mine water treatment. Zero cost goes hand in hand with sustainability as it is likely to involve reduce usage of energy and materials or re-use of materials which might otherwise be waste for beneficial purposes. We will evaluate opportunities to: - reduce construction costs - reduce operational costs - generate income We will consider sustainability at all stages in the same way that the health and safety permeates our work. The following list provides some of the considerations which will be brought to bear: - minimizing energy use and carbon emissions by using gravity where possible to transfer the mine water to the MWTS and through the plant (if relevant) - where pumping is required pump efficiency should be maximized - designing the scheme to minimize use of consumables, so that fully passive schemes preferred to active - innovative design approaches such as use of CO2 degassing to raise pH before dosing, thereby minimizing alkali requirements – we will also consider combining the VFR approach (currently being implemented by Mouchel at Silverdale) with pH adjustment (through CO2 degassing and dosing) - automating activities so that the operational costs and requirement for travel to site are minimized - modelling earthworks to achieve a balance eliminating the need for off-site disposal or import - use of recycled aggregates and recycled products where possible - developing a site waste management plan to minimize waste and haulage requirements - developing a modular, deconstructable treatment plant which can be dismantled and re-used at end of life The Coal Authority – Gwindra Scoping study Mouchel Proposal

- consider the potential for renewable energy, for example, if a small building is required installing photovoltaic panels on the roof to generate electricity for the operations – consider the potential for off grid operation by charging batteries with the PV, and using the mine water head to generate electricity (unlikely here) - we consider the potential for use of heat from the mine water locally to be unlikely but we will consider this as an option for use with heat pumps to heat business or domestic premises. Mouchel has a track record in innovation in mine water treatment having been behind the original work on the Vertical Flow Reactor (VFR) dating back to 2002, subsequently working on the VFR PhD with Cardiff University and currently working on the VFR trial at Silverdale. Mouchel has also been innovative in its approach to construction: – at Mouse Water, faced with a lack of sufficient space to follow the PYRAMID guidelines we used half the settlement pond area providing reassurance that the scheme would work based on our understanding of the mine water chemistry and site observations on hydrolysis and settlement rates – at Cwm Gors we developed a ‘concrete free’ scheme to Feasibility Study.

Project team, organisation and experience For this project Mouchel will combine its in house expertise and experience of mine water assessment and treatment, including all supporting environment and engineering disciplines with the specialist water treatment expertise of industry experts Aqua Enviro. Aqua Enviro specialise in the treatment of industrial and municipal wastewater, with clients including water utilities, waste management companies, manufacturing industry, regulators and governmental bodies. The experience of their 20 strong water treatment team encompasses all the technologies and chemistries that might be expected at the Coombe Adit site. Aqua Enviro are able to run treatability trials which might be from their own laboratory and will be responsible for design and costing (capital and operating) of water treatment systems from scoping through to Outline Design. We feel that the project will benefit from Aqua Enviro’s specialist expertise from the scoping stage as this will allow a strong focus on the identification of the most advantageous technical solution taking environmental, sustainability, financial (CAPEX/OPEX) and technical risks into account. Depending on the results of the Scoping Study at Feasibility stage we may endeavour to involve Cardiff University (Devin Sapsford). Mouchel and Cardiff University have cooperated on the development of the Vertical Flow Reactor (VFR) for more than 10 years. A large scale trial scheme is under development at the Silverdale mine water treatment site. Cardiff University’s ideas of extending the use of the VFR to metal mine water treatment are interesting and this project may offer the opportunity for the further development of such an innovative, low footprint treatment solution. The project team is illustrated in the attached project team organogram which shows the main lines of communication and technical leads. Two pages CVs of key staff are also attached. Together Mouchel and Aqua Enviro combine all the expertise and experience required to deliver an exemplary and innovative solution for this site which will provide a blueprint for non-Coal sites for the Coal Authority in future. The details are presented within the synopses and project lists in the CVs with headline summaries below: - In depth understanding of the hydrogeology and hydro-geochemistry of metal mine waters gained from a decade working in the mining industry world wide (UK, Ireland, France, Spain, Russia, South Africa, USA, Fiji, Colombia etc.) on the mine water impacts and mitigation - Direct experience of design, implementation and operation of fully active treatment plant (St Salvy zinc mining complex France), - Recent work on discharges from metals mines including the Wheal Jane project for the Coal Authority and through expert witness work related to uncontrolled discharge from a former tin mine near St Austell - leading industry expertise in water treatment and process engineering covering all aspects of water treatment including non-coal mine water treatment from a former slate mine and wide ranging industrial waste waters - Aqua Enviro in house treatability laboratory for testing the responses for waters to different processes (e.g. aeration, alkali addition, flocculation) and developing design parameters for mine water treatment - highly regarded national water treatment expert in peer review role - experience of all the engineering and planning constraints issues associated with this type of work through design and implementation of schemes with the Coal Authority; numerous brownfield land remediation schemes with associated infrastructure (motorway junctions, highways, bridges, drainage, SUDs, landscaping) including projects in value exceeding £100million. - in-house planning, environmental and heritage expertise including all the detailed specialist disciplines and protected species licenses. Brief summaries of the roles of the principal team members are presented below: The Coal Authority – Gwindra Scoping study Mouchel Proposal

Piers Sadler – Project Director As Project Director Piers’s role will be to take an overview of the work, ensuring that the source term is properly understood and a robust conceptual site model (CSM) developed, project objectives are met, risks are understood and addressed, technical standards are high and deliverables are of excellent quality. A critical aspect will be integration of the input from the disciplines to make sure that the project comes together as a working whole, ensuring that technical recommendations are practical as well as effective and will be acceptable to client/stakeholders and regulators. Steve Colebrook - Project Manager Steve will work closely with Piers and will be responsible for team co-ordination, financial management, sub-contractor management and communications with the Coal Authority. Unless agreed otherwise with the Coal Authority’s Project Manager, all client communication between the Mouchel team will be through Steve. Steve will also act as the main line of communication with Aqua Enviro’s team leader Paul Lavender. Paul Lavender – Process Engineering/Water Treatment Team Leader The Aqua Enviro Team will be led by Paul Lavender who will lead the design and whole life costing exercises through scoping, feasibility and Outline Design. He will report to the Mouchel Project Manager and will collaborate with Mouchel’s mine water experts and engineering team to develop semi-passive and active treatment systems. Jonathan Ingsley - Civil Engineering Team Leader Jonathan will be responsible for civil engineering input on earthworks, hydraulic design, access and drainage. He will lead the 3D modelling which will be the basis of the designs and will work closely with the geotechnical engineers, water engineers, water treatment designers and environmental scientists to develop designs and capital and operating costs for the civil engineering infrastructure. Keith Bowden – Pipeline Engineering Keith will be responsible for design and costing of the water capture and transfer. He will work closely with the civils, water engineering and geotechnical teams. Iain Turkington – Geotechnics/Geo-environmental Lead Iain will report to the Project Manager and collaborate closely with the engineering teams to ensure that the scheme is structurally sound but cost effective. He will assess geo environmental and geotechnical constraints and also be responsible for designing and delivering ground investigations as required by the designs. Rachel McEvan – Environmental Assessment Lead Rachel will be responsible for environmental assessment and permitting. She will be responsible for planning and permitting work as well as managing any environmental surveys etc.

Assumptions, Fees and Terms & Conditions The fee breakdown to undertake the Scoping Stage as described above is provided in the attached Priced Work Breakdown Schedule. The total fee estimate to undertake this work is £18,278.60. The fee is based on Option E – Cost Reimbursable of the NEC 3 Professional Services Contract (under Coal Authority’s General Engineering Framework Contract, CA18/2311). The Framework Contract Data provided by the Employer state that for each individual contract the Consultant’s total liability will be limited to an amount agreed commensurate with the size of the commission. We therefore propose that the Consultant’s total liability to the Employer for all matters arising under or in connection with this contract, including infringement of the rights of Others and loss of or damage to third party property, is five hundred thousand pounds (£500,000) and the Consultant’s liability to the Employer for the Employer’s indirect and consequential loss is zero (£0). Our fee proposal assumes that this will be acceptable to you.

Programme

Remediation Scoping Study of the treatment of Coombe discharge, Gwindra ID Task Name Start Finish November 2014 December 2014 January 2015 February 2015 03/11 10/11 17/11 24/11 01/12 08/12 15/12 22/12 29/12 05/01 12/01 19/01 26/01 02/02 09/02 16/02 1 1. Project Management (S8) Thu 06/11/14 Fri 16/01/15

2 1.1 Monthly progress reporting Fri 05/12/14 Fri 02/01/15

5 1.2 Planning, communications and team coordination Thu 06/11/14 Fri 16/01/15

6 1.3 Sub-contractor management and liaison Fri 07/11/14 Fri 16/01/15

7 2. Scoping study (S1-7) Thu 06/11/14 Fri 16/01/15

8 Project award Thu 06/11/14 Fri 07/11/14

9 S1 Start up meeting Thu 13/11/14 Thu 13/11/14

10 S2 Site visit Mon 24/11/14 Fri 28/11/14

11 S3 Request and review of existing information Thu 06/11/14 Mon 08/12/14

12 S4 Appraisal of remedial options Thu 20/11/14 Mon 15/12/14

13 S5 Draft Scoping Report Thu 04/12/14 Tue 23/12/14

14 S6 Meeting (conference call) Wed 07/01/15 Wed 07/01/15

15 S7 Final Scoping Document Mon 12/01/15 Fri 16/01/15

16 3. Feasibility study Mon 02/02/15 Fri 29/05/15

Task Progress Summary External Tasks Deadline Project: Programme Date: Fri 31/10/14 Split Milestone Project Summary External Milestone

Page 1

Team Organogram

Team Organogram - Remediation Scoping Study of the treatment of Coombe discharge, Gwindra

Project Director/ Framework Manager Piers Sadler

Project Manager Steve Colebrook

Water Treatment AquaEnviro (Subconsultants) Dr Nigel Horan (Reviewer) Matthew Smyth (Process Engineering/Water Treatment) Paul Lavender (Team Leader / Treatability Trials)

Geo-environmental Civil Engineering Minewater Chemistry and GIS Technician Iain Turkington Jonathan Ingsley Hydrogeology Imran Wani Piers Sadler

Pipeline Engineering Environmental Assessment Heritage & Archaeology Keith Bowden and Permitting Sally Hales Rachel McEvan

Ecologist Landscape Architect Paul Hanson Louise Webb

Staff CVs

Piers Sadler Consultant Hydrogeologist

Proposed position on contract: Project Director / Framework Manager / Mine Water Chemistry and Hydrogeology Areas of expertise: Hydrogeology Hydrogeochemistry Minewaters

Synopsis

Mouchel’s Project Director is Piers Sadler. Piers is an acknowledged minewater expert, having been involved in mining hydrogeology and minewater remediation in the UK and overseas since the early 1990s. He is well known to the Coal Authority, having been involved in numerous Coal Authority projects since the formation of the Coal Authority in 1994. He has authored and presented numerous papers on minewater hydrogeology, hydrochemistry and treatment for both coal and metal mines. Between 2005 and 2008 he was a steering group member for PhD and post doctoral research in minewater treatment using vertical flow reactor (VFR) techniques. He is currently working on the Wheal Jane, Michael and Silverdale VFR schemes for the Coal Authority.

He has worked on a number of metal mine projects with very similar (zinc, lead and cadmium) issues including managing the closure of a zinc mining complex in southwest France and study of 14 metal mines in mid-Wales. Whilst his specialisms are hydrogeology, minewater chemistry and minewater treatment, he is very familiar with the whole process of minewater treatment scheme development and the risks and opportunities which such schemes raise.

Relevant Project Experience Client: The Coal Authority 2014 Project: Wheal Jane Mine Role: Technical Director Project Director for the Wheal Jane project reviewing mine water chemistry and flows, developing CSM for the discharge, evaluating receiving water impacts and designing emergency mine water discharge system. Client: Foot Anstey Solicitors 2014 Project: Uncontrolled Mine Water discharge, Cornwall Role: Expert Witness Appointed by solicitors as expert witness in this legal dispute involving mine water discharge from former tin mines in private garden. Understanding the source term through CSM development is critical. Production of expert witness report to Civil Procedure Rules 35 requirements. Client: Metal Europ 1995- 1998 Project: St Salvy Mining Complex –Mine Closure and Rehabilitation Role: Project Manager Project manager for investigation and mine closure implementation of this mining complex including two separate underground mines and several waste rock piles. The project included detailed monitoring, hydrology studies, CSM development, treatability trials (active and passive treatment including compost bioreactor) and development of a remediation programme including design and construction of active water treatment plant for removal of zinc, cadmium and lead from an adit discharge and measures to cap waste rock and divert surface waters away from contamination sources. Client: Les Malines Mine 1996- 1998 Project: MetalEurop CV Piers Sadler

Role: Project Manager Managed the feasibility study for rising minewater from former zinc mines with mine water contaminated with zinc, cadmium and iron, including minewater monitoring, hydrogeology, CSM development and treatability trials (active and passive treatment including compost bioreactor). Developed closure plan for the underground workings. Client: The Environment Agency 1996- 1997 Project: Scoping Study for 14 former metal mines in Wales Role: Project Manager Project manager for scoping study reviewing sources and treatment options for 14 former zinc, lead and copper mines in Wales including monitoring, review of mining history and archaeology, hydrology and hydrogeology, CSM development and modelling metal loadings to surface waters at different flow rates. Developed preliminary remediation scheme and costs for waste rock and adit discharges for each site. Client: Rio Tinto 1998 - 2000 Project: Las Cruces Copper Project, Spain Role: Water Environment Team Leader Lead the team designing the water management for feasibility study for the billion dollar Las Cruces copper project in Spain for Rio Tinto. Including flood studies, waste management, water supply, water treatment and mine closure design. A key aspect was designing to minimise pollution from heavy metals including copper, lead, zinc, cadmium and iron from this highly reactive ore body. Qualifications and Affiliations Qualifications / professional Awarding body Year accreditations & memberships BSc Geoolgy University of Bristol 1988 MSc Hydrogeology University of Birmingham 1989 CGeol Chartered Geologist The Geological Society 1996 Employment History Dates Company Role 2010 – date Piers Sadler Consulting Director 2000 - 2010 Mouchel Principal Hydrogeologist to Technical Director 1993 - 2000 Steffen, Robertson & Kirsten (UK) Principal/Senior Hydrogeologist Limited (SRK) 2002 - 2003 Wimpey Environmental Limited Hydrogeologist

Version 1.1 April 2014 Steven Colebrook Hydrogeologist

Proposed position on contract: Project Manager / Hydrogeologist Areas of expertise: Water Resources Low Flow Assessments Groundwater Exploration

Synopsis

The proposed Project Manager is Steve Colebrook. Steve is currently Project Manager for the Wheal Jane, Michael and Silverdale projects for the Coal Authority, also providing technical input on hydrogeology, hydrology and water chemistry. He has 12 years experience in hydrogeology and hydrology as a consultant and for the Environment Agency, where he worked in the groundwater and contaminated land teams, providing technical and regulatory support on planning, permitting, groundwater level and water quality matters. Steve has a very good understanding and knowledge of the relevant legal background and regulatory environment.

Steve’s experience on the Wheal Jane project has given an insight into complex metal mine water chemistry and hydrology as well as some of the problems involved in the operational phases of mine water treatment projects.

Relevant Project Experience Client: Coal Authority 2014 Project: Silverdale VFR Trial Role: Project Manager / hydrogeologist

Project managing the feasibility and outline design for the trial of a new mine water treatment method. Undertaking the geo-environmental desk studies for the proposed site as well as liaising with teams across various disciplines to assess the feasibility of the trial at the proposed location. Client: Coal Authority 2014 Project: Wheal Jane Adit Scoping Role: Project Manager / hydrogeologist

Review of available mine water level, quality and abstraction data and liaison with other engineering disciplines to scope the possibility of using an existing mine adit, plug and pipework, to transmit mine water directly to a river following extreme rainfall events when the existing mine water treatment facility is unable to cope with the volume of mine water that has to be abstracted. Client: Coal Authority 2013- Project: Michael Feasibility Study 2014 Role: Project Manager / hydrogeologist

Assessing the feasibility of various options to deal with rising mine water levels in the East Fife coalfield. Reviewed existing reports and data to identify potential options for mine water treatment and discharge schemes as well as identifying site constraints and risks. A pumping test specification has been developed, designed to establish mine water quality and flow parameters to help identify a preferred option.

CV Steven Colebrook

Client: Environment Agency 2005- Project: Technical & Regulatory Support 2013 Role: Hydrogeologist

Over various periods Steve provided general technical support to the Wessex and Devon & Cornwall regions EA groundwater and contaminated land teams on planning consultations, permitting and Section 32 consenting. Typical work included assessing planning consents/reports for Phase I, II and III site investigation and risk assessment for the potential impacts to controlled waters. Recommendations made on the suitability of risk assessment undertaken by environmental consultants and identification of further works to fulfil Environment Agency and planning requirements. Client: Environment Agency 2012- Project: Water Framework Directive – Groundwater Body Assessment QA 2013 Role: Hydrogeologist

Desk based quality review of the risks posed to groundwater dependent ecosystem (wetland) sites in the Wessex and Devon and Cornwall regions due to deteriorating groundwater quality and/or quantity. The results were used as one of the tests to determine the status of Groundwater Bodies. Reviewed the results of the other tests undertaken within the Environment Agency’s database assessment tool to ensure that the appropriate data had been used. Updated results based on the findings of any local investigations that had not previously been considered. Client: Severn Trent Water 2009 Project: Low Flow Options Appraisal Role: Project Manager / hydrogeologist

Project managed and provided hydrogeological support to identify potential options to mitigate against groundwater abstraction impacted water features (river flow, pool levels) and ecology, working with Severn Trent Water, the Environment Agency and Natural England. The options were taken forward for cost benefit appraisal to compare the options from an economic perspective relative to the environmental and social benefits they would provide. Results used to identify the preferred choices.

Qualifications and Affiliations Qualifications / professional Awarding body Year accreditations & memberships MSc. (Distinction) Applied Environmental The University of Wales, Cardiff 2002 Geology BSc (Hons.) Geology The University of Birmingham 2000 Fellow of the Geological Society The Geological Society

Employment History Dates Company Role 2013 to date Mouchel Hydrogeologist 2012 - 2013 Hyder Consulting Hydrogeologist, contractor 2011 - 2012 RPS Aquaterra Field hydrogeologist, contractor 2003 - 2011 Hyder Consulting Graduate Hydrogeologist / Hydrogeologist

Version 1.1 April 2012 Jonathan Ingsley Principal Engineer

Proposed position on contract: Civil Engineering Areas of expertise: Infrastructure Design (Drainage) Sustainable Drainage Systems (SuDS)

Synopsis

Jonathan has over 25 years experience in infrastructure design (highways and drainage). He specialises in drainage infrastructure and SUDS design utilizing 3D modelling techniques for hydraulic and earthworks design. His experience also includes hydrology and flooding risk assessment and highway design. He has been involved in numerous earthworks design projects for the Coal Authority including the completed Mouse Water scheme, Michael scheme Feasibility Study, Silverdale Scheme VFR Outline Design and a range of scoping and feasibility studies in Wales and Scotland. The requirements in terms of civil engineering are likely to be very similar for these sites as for metal mines eg the arrangement for a vertical flow pond is the same as that for the VFR scheme being designed for Silverdale.

Relevant Project Experience

Client: Redrow Homes Ltd. 2011- MON BANK Project: Present Role: Infrastructure Team Leader Technical team leader providing design of S.38 highways and S.104 sewers for 575 plot residential development. Design included complex surface water sewer system which included two on-line ‘Stormcell’ below ground attenuation tanks with controlled surface flooding within Public Open Space areas in extreme events, and an ‘end-of-pipe’ attenuation pond (both designed in 3D).

Client: Dorset County Council 2006- Project: QUEEN ELIZABETH’S SCHOOL 2012 Role: Infrastructure Team Leader Technical team leader providing foul and sustainable surface water drainage scheme (including Flood Risk Assessment) for £26M Building Schools for the Future project. Surface water system included a 3D designed multi-stage SuDS attenuation and water quality improvement (sand filter) basin/pond feature.

Client: South Gloucestershire Council 2009- Project: A4174 DRAINAGE 2011 Role: Internal Project Manager Technical team leader for detailed drainage design on Greater Bristol Bus Network highway widening scheme. Scheme included developing the 3D design of a new earthwork detention basin for construction within an existing floodplain.

CV Jonathan Ingsley

Client: The Coal Authority 2003- Project: VARIOUS 2008 Role: Infrastructure Team Leader Technical team leader providing 3D infrastructure and earthworks design for various minewater treatment schemes. Projects included: • Mousewater (initial feasibility and outline/planning design through to construction of settlement pond, reed bed, associated earthworks, infrastructure and structural features, and public access trails. The project was awarded with an Environmental Commendation from the Saltire Society in association with the Institution of Civil Engineers). • Abergarwed, Cym Gors, Abersychan, Craig-y-Aber, Michael and Silverdale (earthworks modelling and infrastructure design for feasibility and preliminary design stages).

Client: Arlington Business Parks Ltd 2005- Project: GLOUCESTER BUSINESS PARK INFRASTRUCTURE K 2006 Role: Drainage Team Leader Technical team leader for planning and 3D detailed design stages of 20,000m3 balancing pond, for inclusion as part of S.104 surface water sewer system. Promoted use of sustainable willow spilling construction method to provide combined soil retention and landscaping works.

Qualifications and Affiliations

Qualifications / professional Awarding body Year accreditations & memberships BTEC Civil Engineering Brunel Technical College, Bristol 1990 HNC Civil Engineering Brunel Technical College, Bristol 1992 Eng Tech Institution of Civil Engineers 1993 IEng Institution of Civil Engineers 1997

Employment History

Dates Company 1988– Present Mouchel 1988-1988 M J Rees and Company

Iain Turkington Team Leader - Geotechnics & Environment

Proposed position on contract: Geo-environmental Areas of expertise: Geotechnics Engineering Geology Geomorphology Business Development

Synopsis

Iain Turkington is a Chartered Engineering Geologist with 20 years experience in all aspects of Engineering Geology, Geotechnical Engineering and Environmental Engineering specialising in providing practical solutions to a wide variety of ground related issues. Iain’s Consultancy experience has ranged from the undertaking of comprehensive geotechnical/geological assessments throughout South East Asia, the UK and Ireland, management and administration of large ground investigation Contracts, geotechnical design and management of infrastructure development, supervision of earthworks and foundation construction and more recently management of landfill design and construction. Iain has gained his experience within a wide range of market sectors from small private developments through to major infrastructure, waste, energy and the oil & gas industry. On the commercial side, Iain has found a passion for business development across a wide range of disciplines and has taken new ideas to key clients, successfully gaining their ‘buy in’ and winning work in new areas of business. Key Skills • Ground Investigation design and interpretation for both land and marine environments including logging to Eurocode 7 (previously BS5930) • Soil and rock slope stability analysis and design using SlopeW, SLIDE and DIPS • Bearing capacity/foundation analysis and design to Eurocode 7 • Major earthworks and reclamation design and supervision • Route alignment appraisal for large road and rail projects (Familiar with AutoCAD 3D Civils) • Familiar with various tunnelling design methods and undertaking Blast Risk assessments • Analysis of complex ground issues including adverse hydrogeology, soft ground, voids and contaminated land. • Project management of large multidisciplinary projects throughout the UK, Ireland and Asia • Experienced in working and communicating effectively with Clients, marketing and tender negotiation

Relevant Project Experience Client: McLaughlin & Harvey 2013 - present Project: A82 Pulpit Rock Road Improvement – Cat III Design Checkers Role: Lead Geotechnical Engineer Lead Geotechnical Engineer for the Geotechnics design team responsible for coordinating the Category III Design Checking for the A82 Road Improvement. The road widening scheme consists of approximately 200m of elevated decking around a prominent headland next to Loch Lomond. The geotechnical design is complex with several structural and load interactions to consider. The scheme also includes checking of both rock and soil slope stabilisation designs.

Client: Confidential 2012 - present Project: Deep Geothermal Energy Role: Project Manager Successfully marketed a deep geothermal district heating scheme to a Council. Responsible for the technical lead across several disciplines including hydrogeology, Geotech, water consulting and M&E. Managed the production of a Desk Study and formulated a cost model for input into the Final Business Case. CV Iain Turkington

Client: Coal Authority May 2013 - Project: Framework – Minewater Engineering present Role: Framework Manager Successfully tendered for admission to the Framework on three Lots; Minewater treatment, Hydrogeology and Archaeology. Responsible for liaison with the Coal Authority procurement manager. Mouchel has partnered with Cardiff University in order to provide innovative treatment options and engineering solutions especially where conventional engineering solutions are constrained by space.

Client: Geological Survey Ireland 2012

Project: Landslide Susceptibility GIS Project Role: Engineering Geologist Responsible for the creation of a GIS database for landslide susceptibility for the coastline of Ireland. The inland database had already been created in GIS. The work involves classifying the coastal sections in terms of susceptibility and linking it with the inland data to provide whole coverage.

Client: Roads Service NI / Jons Civil Engineering 2012 Project: A2 Shore Road – Design & Build Role: Lead Geotechnical Engineer Geotechnical Team Leader for the D&B Tender design for a 4.4km dual carriageway widening scheme. Scheme involves widening of on-line sections and design of off-line portion and associated accommodation works including retaining walls up to 3m in height, a secant bored pile wall and an overbridge.

Qualifications and Affiliations Qualifications / professional Awarding body Year accreditations & memberships BSc(Hons) Geology University of Liverpool 1993 MSc Applied Geosciences University of Hong Kong 2000 FGS Fellow Geological Society of London 2012 CGeol Chartership Geological Society of London 2013 FIHE Fellow Institute of Highways Engineers 2014

Employment History Dates Company Role 2011 - Present Mouchel Team Leader – Geotechnics and Environment 2011 Hydrock Ltd Principal Geotechnical Engineer (Contract based) 2007 – 2010 RPS Planning & Development Principal Geotechnical Consultant 2004 – 2007 Mouchel Parkman plc Senior Geotechnical Engineer 2001 – 2003 Chung Shun Boring Project Manager Engineering Company Limited (Hong Kong)

Keith Bowden Senior Engineer

Proposed position on contract: Pipeline Engineering Areas of expertise: Sewerage and wastewater treatment Highway drainage Water supply

Synopsis

Keith Bowden is a Senior Engineer responsible for the civil and mechanical engineering involved in capturing and transferring flows to treatment sites, and in discharging the treated effluent back into the receiving watercourse. Keith has a background in the water industry and is currently working on the Coal Authority's Wheal Jane and Silverdale schemes.

Keith has experience in supplying drainage expertise to project teams, including highway projects and minewater treatment schemes. This entails investigating and reporting on problems, feasibility studies and the outline and detailed design of solutions. Previous experience includes sewerage, wastewater treatment and water distribution projects in the water industry, both in the design office and out on site.

Relevant Project Experience Client: Coal Authority 2014 Project: Silverdale VFR Trial Role: Design Engineer

Design engineer on hydraulic design of spur off existing minewater pumping main to deliver controlled flow to a trial treatment scheme.

Client: Coal Authority 2014 Project: Wheal Jane Adit Scoping Role: Design Engineer

Design engineer on investigation of existing mine adit plug and pipework, and hydraulic design of proposed works to enable increased rate of discharge from the adit.

Client: Area 1 MAC 2014 Project: Pond Study and Drainage Improvements Role: Design Engineer

Design engineer reporting to Project Manager on two projects:- - Investigation and written report on the performance of an existing highway drainage system incorporating treatment & infiltration ponds, including hydraulic modelling and pollution impact assessments. - Identification of areas of inadequate drainage on a section of trunk road, and detailed design of remedial works.

CV Keith Bowden

Client: Wessex Water 2011 Project: Old Wareham Road Booster Pumping Station Role: Civil Design Engineer

Design engineer on the refurbishment of an existing clean water booster pumping station and distribution pipework. Responsible for civil works at the pumping station, with close liaison with the M&E designers, and the civil and hydraulic design of pipework to bypass an existing water tower, together with completion of all Client and statutory procedures.

Client: Wessex Water 2010 Project: Frampton Cotterell Sewerage Requisition Role: Civil Design Engineer

Lead engineer for the detailed design of a sewer to connect a new housing development to the existing sewer. As well as the structural and hydraulic design of the pipeline, this also included liaison with the Client, the housing developer and other affected parties, and completion of various procedures necessary to enable the scheme to proceed.

Client: Yorkshire Water 2009 Project: Seamer WwTW Refurbishment Role: Civil Design Engineer

Civil & hydraulic design engineer on several projects to improve a wastewater treatment works in East Yorkshire, with a new inlet works (screens, grit removal and pumps), tertiary filters for phosphorous removal, sludge storage and storm tank refurbishment. Project successfully completed and entered for ICE award.

Qualifications and Affiliations Qualifications / professional Awarding body Year accreditations & memberships B.Eng. (Hons.) Sheffield University 1982 Civil & Structural Engineering

Employment History Dates Company Role 2005 to date Mouchel Engineer / Senior Engineer 1995 - 2005 Haswell Assistant Engineer / Engineer 1992 – 1993 Babcock Water Engineering Ltd Assistant Resident Engineer 1991 - 1992 National Rivers Authority Assistant Engineer 1987 - 1991 Southern Water Ltd Assistant Engineer 1984 – 1987 Fylde Borough Council Graduate Engineer 1983 – 1984 Environmental Design Services Ltd Surveyor

Version 1.1 April 2012 Rachel McEvan BSc Principal Consultant

Position Environmental Assessment and Permitting Areas of expertise Environmental Impact Assessment. Strategic Environmental Assessment. Application of UK and EC environmental legislation. European Protected Species and Appropriate Assessment advice. Consents. Project Management, Consultations and Exhibitions. Public Inquiry.

Synopsis

Rachel is an experienced environmental manager who has worked in the consultancy sector for over 15 years. She leads the Environmental Assessment and Planning team in Mouchel’s Glasgow Office and is currently responsible for environmental service provision in Scotland. Her role covers all aspects of environmental consultancy, including project management of large environmental commissions, including EIA, SEA, HRA and environmental management/supervision; the provision of advice and technical support to a range of clients; business development; and staff mentoring/training.

Rachel has been involved in all aspects of major Environmental Impact Assessment for roads and bridges, water and wastewater treatment schemes, mine water treatment schemes, flood prevention projects, coastal realignment, overhead transmission lines and wind farms. She has specific expertise and experience of stakeholder liaison and consultation, engineering design development and environmental mitigation strategies. Rachel has previously managed the Scottish office of a consultancy specialising in ecological survey, assessment and advice. Here, she was a member of the senior management team with responsibility for a team of professional ecologists undertaking a wide range of environmental consultancy and monitoring activities.

Rachel regularly manages commissions involving teams of environmental specialists and provides technical direction. She has delivered a large number of environmental surveys and assessments, including feasibility studies, screening and scoping studies and has prepared many Environmental Statements. Rachel has a track record of delivering to programme/budget and is able to respond pro- actively to the processes of scheme design, development and implementation. She has been instrumental in the successful delivery and approval of schemes of varying scope and complexity, actively involved in the engineering design process to ensure that environmental sensitivities and constraints are properly reflected in the developing scheme design.

Relevant Project Experience Client The Coal Authority 2014 - Project Michael Colliery date Role Environmental Manager Responsible for managing the environmental aspects of a study to identify the options to capture, transfer, treat and discharge mine water at the former Michael colliery in East Wemyss, Fife. The project involves a feasibility study, consents for a pump test and completion of an outline design. Environmental input includes a marine ecology assessment, provision of a draft Environmental Impact Assessment screening letter and obtaining appropriate consents (SEPA discharge licence, Marine Licence, Marine Works Licence (for Crown Estate owned land)). As the foreshore adjacent to the site is a designated area (SPA, Ramsar, SSSI) the need for Habitats Regulations Appraisal is being determined through consultation with Scottish Natural Heritage.

Rachel McEvan

Client Scotland Excel 2013 - Project Engineering & Technical Consultancy Framework date Role Framework Co-ordinator / Environmental Engineering Lead 2-year term commission for the provision of consulting services for Scottish Local Authorities in respect of the following disciplines: roads and structures, environmental engineering, land surveying, drainage and flooding, geotechnical and project management. Responsible for co-ordinating the scoping and delivery of projects awarded under the commission and also Lot Lead for environmental engineering.

Client Stirling, Falkirk and Clackmannanshire Councils 2008 - Project Various date Role Term Commission Environmental Manager Provision of environmental services for Stirling, Falkirk and Clackmannanshire Councils under a joint venture between Mouchel and Balfour Beatty. A range of disciplines and specialist areas are covered by the commission. Recent projects have included environmental appraisal for Stirling and Tayside flood alleviation studies, Natural Flood Management, Bo’ness footpath repairs (adjacent to Firth of Forth SPA/SSSI/RAMSAR), a number of bridge works projects (several over designated watercourses) and road stabilisation works.

Client Scottish & Southern Energy 2010 - Project Beauly to Denny - Rationalisation Schemes 2013 Role Environmental Manager 3-year term commission for services relating to EIA for overhead, underground and marine transmission lines and associated substations. Responsible for managing the commission and delivering environmental assessments and Management Plans for four schemes, involving the undergrounding/lowering of existing overhead lines (33kV, 132kV and 275kV) in the north of Scotland (required as mitigation for construction of the Beauly to Denny 400kV line currently being installed). Also acted as Site Environmental Advisor for two schemes, one of which has now been successfully constructed. Worked closely with the client programme managers and site contractors, liaising with stakeholders as necessary, to ensure successfully delivery.

Qualifications and Affiliations Qualifications / professional Awarding body Year accreditations & memberships HNC Applied Biology Leeds University 1992 BSc Environmental Studies University of Sunderland 1995 MSc Environmental Rehabilitation University of Aberystwyth 2005 Affiliate IEMA Institute of Environmental Management and Assessment 2014

Employment History Dates Company Role 2008 – date Mouchel Principal Consultant 2007 – 2008 AMEC Earth and Environmental (acquired Young Principal Consultant Associates in 2007) 2006 - 2007 Young Associates (Environmental Consultants) Ltd Principal Consultant 2003 - 2006 Young Associates (Environmental Consultants) Ltd Senior Consultant 1999 - 2003 Babtie Group Environmental Consultant 1997-1999 Mott Macdonald Environmental Monitoring Officer

Curriculum Vitae

Paul Lavender Paul Lavender BSc (Hons), CSci, CEnv, MCIWEM Business Development Manager

Email: [email protected]

Education and Qualifications BSc (Hons) Environmental Science (Chemistry) Affiliate member of the Institute of Chemical Engineers Member of the Chartered Institution of Water and Environmental Management (MCIWEM) Chartered Scientist status (CSci) Chartered Environmentalist status (CEnv) Received Highly Commended for the IChemE Water Award Associate Member of the Chartered Institute of Waste Management (Assoc MCIWM)

Employment History Present Appointment 2006 –Present Business Development Manager/ Technical Specialist, Aqua Enviro Ltd

Previous Appointments 2002 –2006 Project Manager, Aqua Enviro Ltd., Wakefield, UK 2000 – 2002 Process Scientist, Aqua Enviro Ltd., Wakefield, UK 1999 - 2000 Research Scientist, Croda Applications Ltd, Doncaster

Key skills

Paul Lavender has over 14 years consultancy experience specialising in the treatment of water, wastewater, bio-solids and organic waste. His key experiences include:

• Nuclear Energy Company - Technical assessment of engineered solutions to remediate storage lagoons containing low level radioactive material, including mitigation measures to minimise the risks associated with methane emissions from the degradation of organic materials • Environment Agency – Development and delivery of treatability trials to design a treatment plant to treat groundwater contaminated with leachate and mecoprop to enable a hydraulic barrier to be implemented to protect groundwater reserves • Engineering Contractor – Review of passive, semi-passive and active treatment technology options to treat acid mine water drainage from a slate mine in North Wales. Included a risk register, CAPEX, OPEX and whole life costs for each option. • Mining Company – Development of a novel ion exchange technology for ammonia removal and recovery from a calcium stearate production facility at a limestone processing plant • Engineering Contractor – Treatability testing using jar testing to design a treatment facility to remove and recover phosphorus from a chemical production facility in France. • Review of physico-chemical treatment methods to remediate mine water lagoons contaminated with metals and petrochemical compounds, including precipitation and catalytic oxidation. • Yorkshire Water - Use of a recycled material from aluminium processing as an ion exchange resin to remove zinc, cadmium, nickel and lead from discharges to watercourse • Development of a collaborative research consortium including 5 UK water companies to develop a novel technology for the recovery of energy and nutrients from sewage screenings with the aim of securing diversion from landfill and developing sustainable recovery and recycling routes • Liaison with the UK regulator on behalf on a number of major chemical manufacturers to understand the EA’s position on the EU BREF document on BAT in the chemical sector, the potential impacts upon current water use and treatment practices and requirements to comply with the pending legislation • Technical input on UKWIR and WRAP research projects including CL12 Impacts of Climate Change on Wastewater Treatment and OIN002 Plant Pathogens in AD • Development of a novel ion change media for the removal of metals from water and wastewater • Review of the chemical addition control philosophy of a WTW’s to optimise chemical usage and lamella performance based upon incoming water quality in order to provide a baseline upon which capital investment decisions for expansion can be made for PR14 • Process audits to tackle odour including the implementation of control strategies to maintain regulatory compliance and achieve £250k per annum of operational savings at a 1.1million PE treatment works • Member of the tender assessment panel for the WRAP Environmental Transformation Fund (ETF) anaerobic Digestion demonstration program • Dewaterability trials to assess polymer types and doses required to efficiently dewater digestate from AD facilities treating source segregated food waste • Knowledge transfer of experiences gained through both internal team meetings and external conferences/events including the CIWEM National Conference, IWEX, Foaming and Bulking of Activated Sludge Conferences and instructor/speaker at Activated Sludge Microscopy courses. • Troubleshooting and optimisation of UASB, EGSB, IC and hybrid anaerobic digestion systems for industrial effluent treatment • Approved trainer for CIWEM accredited courses including sludge treatment processes and anaerobic digestion modules • Project management of WwTW’s audits and headroom assessments for over 25 sites in Northern Ireland and Scotland. • Troubleshooting of industrial wastewater treatment works for a range of industries including paper mills, food processing and chemical manufacturing. • Development of a filtration process using clinoptilolite ion-exchange resin for the treatment for tertiary treatment and nitrogen recovery

Selected Publications

Refereed Contributions to Journals

Lavender, P. Cowley, E. and Horan, N.J. (2004) A survey of filamentous bulking problems in activated sludge plants in the UK. Journal of the Chartered Institution of Water and Environmental Management (In press)

Un-refereed Contributions to Journals

1. Lavender, P.K. (2008) The Importance of Flow and Load Surveys Water and Wastewater Treatment, 49, 51-52. 2. Lavender, P.K. (2008) Tertiary Treatment of Chemical Wastewaters Filtration and Separation, 45, Vol 4. 3. Lavender, P.K. (2008) Troubleshooting of Anaerobic Digestion Problems Water and Wastewater Treatment, 51, 30-32.