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Completed Projects

DARFUR URBAN WATER SUPPLY REHABILITATION PROJECT, SUDAN
For: United Nations Office for Project Services (UNOPS) - 2012
DFID is funding a major programme of urban water supply rehabilitation in the Darfur States, implemented by UNOPS. A key element of the programme is to develop the technical and administrative capacities of the regional Urban Water Administrations, requiring a comprehensive long-term capacity building framework. The Consultant undertook technical and management capacity assessments, reviewed water resource management practices, and developed a comprehensive institutional strengthening and capacity building plan incorporating the development and monitoring of Key Performance Indicators.

HEREFORDSHIRE COUNCIL WATER CYCLE STUDY
For: Herefordshire Council - 2009
WCSs will assist in implementing the Water Framework Directive in the UK and require detailed investigation and strategic planning of all aspects of the water cycle within local planning areas, from water resource availability and abstraction, treatment and water supply constraints through to sewerage network and sewage treatment constraints, and long-term compliance issues with WFD Environmental Quality Standards set by the River Basin District Authority. The Consultant was engaged by the client to advise on all aspects of the Water Cycle Strategy and to develop a 25 year strategy for the Local Planning Authority.

SUSTAINABLE URBAN DRAINAGE SYSTEM MASTERPLAN, GLOWETH, CORNWALL
For: Cass Associates, Liverpool - 2001
A 13 ha. housing development was considered a risk to historically flooded downstream properties at Calenick.  The client was keen to promote a minimal runoff storm drainage system through the use of ecologically enhancing, sustainable flood control measures.  The consultant devised and modelled a system incorporating source control measures such as the OSMA GarastorTM and AquaCellTM systems, infiltration trenches, channel reed bed filters, and three constructed wetlands providing flood detention.  Designs were submitted for the inflow and outflow control structures for each wetland.

ATTENUATION RESERVOIR DESIGN, GALMINGTON STREAM, TAUNTON, UK
For: TESCO Stores Ltd. and White Young Green - 1999
A follow-on commission required the feasibility assessment of constructing a 4000 m attenuation reservoir to provide compensatory floodplain storage lost to site development.  A RIBAMAN catchment and river flow routing model was developed and used to test various reservoir configurations.  Through innovative hydraulic design, the reservoir was also able to reduce downstream peak flows in the Galmington Stream, thereby also reducing flood risk from surcharging culverts to numerous properties.

RUNOFF IMPACT ASSESSMENT, SULLY BROOK, PENARTH, WALES
For: Welsh Development Authority & PB Kennedy & Donkin Ltd. - 1999
A major new housing development (35 ha.) is proposed for east Penarth.  Surface water disposal will be to the Sully Brook, with potential detrimental impact to downstream properties and bridges.  An urban runoff impact study was carried out, incorporating channel surveys, hydrological catchment modelling and hydraulic modelling of bridges.  The most cost-effective solution was the construction of a 4000 m storage open reservoir, which was designed to be ecologically beneficial to local wildlife.

RESERVOIR DESIGN AND DRAINAGE MASTER-PLANNING, EMERSONS GREEN, BRISTOL, UK Environment Agency (South Western), J.J. Gallagher, Parkman - 1994-Ongoing
The Emersons Green development is one of the largest residential and business schemes in the south of England.  Substantial problems were envisaged with the safe disposal of greatly increased run-off from the 395 ha. developable area.  The city of Bristol downstream was considered to be at risk from the development.  Major flood alleviation proposals had to be designed and incorporated into a strategic master-plan which formed the guide for all subsequent drainage works on the many separate sites.  Central to the master-plan was the design and testing of six linked major reservoirs to control flood runoff, amounting to a total of 100 000m of storage.  The consultant is permanently retained by the Environment Agency to advise on reservoir design and runoff management as the site progresses.

RUNOFF IMPACT ASSESSMENT, ALLEN'S BROOK, TAUNTON, UK
For: Bovis Homes & Parkman Ltd. - 1998
A small housing development (8 ha.) encountered problems with surface water disposal due to the location of a restrictive river siphon under the Bridgwater - Taunton canal immediately downstream.  The consultant was asked to investigate the hydraulics of the siphon, and prepare a suitable drainage disposal scheme for the site that would not compromise the performance of the siphon, but also minimise land take for flood storage on the site.

RIVER CHANNEL RE-DESIGN, GALMINGTON STREAM, TAUNTON, UK
For: TESCO Stores Ltd. and White Young Green - 1998
A food retail store is currently proposed for a site adjacent to the River Tone and Galmington Stream in Taunton.  The existing site is known to be susceptible to 1 in 100 year flooding.  An Environment Agency requirement was to show that flood storage could be replaced following development by means of an improved and enlarged river channel.  A 2 stage flood channel was designed using the HEC-RAS software, including a new access bridge.  The scheme design showed that flood level risk to upstream properties could also be significantly reduced by an improved channel.

INVESTIGATIONS OF FOUL POLLUTION OF SOUTH COAST BEACHES
For: Wessex Water (Engineering Services) - 1998
During 1997 there were isolated incidents of bathing standard failure on some of the prestigious beaches in the Wessex area.  The source of the pollution was not known, and required investigative studies in appropriate catchments.  This included overflow inspections, river water quality monitoring and modelling of the foul sewage treatment works overflows using existing WALLRUS models.  8 existing foul sewerage models were redesigned and amalgamated by the consultant into a 2000 pipe model incorporating 9 pumping stations.  The central Sewage Treatment Works was also modelled.  Time series rainfall was used to assess overflow and STW performance.

CREEKMOOR FOUL PUMPING STATION APPRAISAL
For: Wessex Water (Engineering Services) - 1997
Creekmoor FPS and associated sewers within the drainage area in Poole, Dorset has a long history of flooding.  Changes to the rising main outlet at the Sewage Treatment Works may result in worsening problems upstream of the FPS.  The study undertook an appraisal of tidally influenced flooding problems within the catchment using WALLRUS, and analysed in detail the pumping station and system performance, identifying the primary causes of station incapacity, and the most cost-effective means of providing various improved levels of service.

CONSULTANCY SECONDMENT ON CATCHMENT DEVELOPMENT CONTROL
For: UK Environment Agency (South Western Region) - 1996
Retained as a consultant on part-time basis to assist and advise the Development Control department on appropriate measures to mitigate the detrimental effects of new development on river management regimes. This includes catchment planning studies, river modelling, negotiations on behalf of the agency, and meetings with local planning authorities.

PAXCROFT BROOK FLOOD STUDY
For: J.J. Gallagher Ltd - 1996
The 95 ha. residential development of Paxcroft Mead near Trowbridge was expected to cause flooding problems in the receiving watercourse.  Use of a hydrological model in the study established that attenuation was not feasible.  A flood scheme had to be designed and tested to the Q100 standard using the HEC-RAS software to satisfy Environment Agency requirements. Sensitivity analysis was required to determine worst case conditions with respect to the backwater effects of the major river downstream and a known restrictive culvert.

SEWERAGE AND STORM WATER MANAGEMENT COURSE
For: University of Bristol, Department of Civil Engineering - 1996
Principal lecturer on the 5 day external course, funded by EPSRC.  The course covered a full range of subjects, including basic hydraulics, rainfall hydrology, sewerage design, through to rehabilitation options, drainage area planning strategies and water quality aspects of improved systems.

RUNOFF ASSESSMENT COURSE
For: Environment Agency (Anglian Region) - 1995
Invited by the Environment Agency to prepare and lecture on a customised course on 'best practice' with regard to the evaluation of flood impact from new development and highway schemes.  The course was run at the Ipswich and Lincoln offices.

CULVERT DESIGN AND ASSESSMENT
For: Construction T.A. Services Ltd - 1994
Principal lecturer on the advanced course dealing with all aspects of the evaluation, modelling and design of river culverts for flood avoidance purposes.  The course was attended by Environment Agency personnel.

NRA SHORT-TERM CONSULTANCY
For: National Rivers Authority (South Western) - 1994
Appointed by the Development Control Section for a 2 month period to provide technical support on catchment modelling studies and Land Drainage Consent applications.

POLLUTION CONTROL SYSTEM, COLUMB ST MAJOR
For: English Estates Ltd - 1994
Outline design and costing of an integrated surface water pollution control system for new industrial estate, including telemetry requirements, and automatic shutdown facility.

MERTHYR TYDFIL ASSET MANAGEMENT PLAN
For: Merthyr Tydfil Borough Council - 1993
Project Engineer co-ordinating all aspects of the Drainage Area Plan for Merthyr Tydfil town (population 40,000), including sewer records upgrading, flow survey planning, hydraulic model building and verification.  The study involved appraisal of over 50 Storm Water Overflows for water quality management purposes.

CATCHMENT DRAINAGE STRATEGIES FOR URBAN DEVELOPMENT CONTROL
For: The Chartered Institution of Water and Environmental Management (Welsh Branch) - 1992 Paper presented to the Institution by invitation.  Awarded the Morlais Owens trophy for the 'Best Paper of the Year', October 1992.

GWENT EASTERN VALLEY TRUNK SEWER MODEL
For: Welsh Water Authority - 1989
Project Engineer on the feasibility study which constructed a detailed 2000 node model of 35 km of the trunk sewer draining the towns of Abersychan, Pontypool and Cwmbran.  These connected areas were also modelled as part of the overall Drainage Area Plan.  The system incorporates some 65 Storm Sewer Overflows, each of which was analysed using Time Series Rainfall.  A 30 monitor Flow Survey was planned and managed as part of the study to calibrate trunk sewer flows.

CHRISTCHURCH DRAINAGE AREA PLAN
For: Wessex Water Authority - 1988
Project Engineer responsible for all aspects of the major drainage rehabilitation study for the urban area of Christchurch, pop. 100,000.  The study encompassed records upgrading, sewer flow surveys, drainage model building, overflow studies, and comprehensive evaluations of rehabilitation options to solve flooding and water quality problems.  As a coastal town, account also had to be taken of tidal interactions with drainage outfall performances.