Our range of services includes:

  • Hydrogeological studies for Environmental Impact Assessment and Environmental Impact Statements
  • Design and installation of boreholes for water supply or monitoring purposes
  • Dewatering assessments
  • Wetland studies
  • Well and aquifer hydraulic testing
  • Well rehabilitation
  • Aquifer vulnerability assessments
  • Aquifer and contaminant transport computer modelling
  • Geological and groundwater investigations: site investigation, hydraulic conductivity testing (falling/rising head tests, pumping tests and percolation tests), groundwater quality assessments
  • Groundwater assessment: flow and transport, rates and mechanisms, availability and vulnerability of groundwater, recharge rates, surface and groundwater interactions, groundwater flooding and rebound
  • Condition assessments of geological Sites of Special Scientific Interest (SSSIs).

Our Projects

Blarney-BogCork Northern Ring Road – Blarney Bog Hydrogeological Assessment

Client: Cork City Council and Cork County Council

Location: Cork, Ireland

Capital Value: c. €175 M

Key Facts: A hydrogeological assessment of the Blarney Bog to assess potential impacts on the habitat resulting from the construction of the Cork Northern Ring Road.

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The scheme is approximately 20km in length and is divided into two sections (northern and western).  FT undertook a route selection report, environmental impact assessment, ground investigations and preliminary design for the project

This area of natural bogland provides a popular recreational area and an important ecological habitat close to Cork City.  FT was asked to investigate the interaction between the groundwater systems with the surface water regimes in the area.  A conceptual model was built in order to interpret and understand the various groundwater/surface water regimes which operate and interact in this region.

FT’s responsibilities for the Blarney Bog study included:

  • Scoping and procurement of site investigation
  • Preparation of contract documents
  • Tender assessment and appointment of contractors
  • On-site supervision and quality assurance
  • Certification of payments
  • Preparation of a hydrogeological Report which gave an interpretation of the interaction between the local/regional groundwater and surface water regimes in the area
  • Conclusions were drawn which showed that the Blarney Bog is most likely not recharged from a groundwater system.

kinsale-rdKinsale Road Landfill – Hydrogeological Assessment

Client: Cork City Council

Location: Cork, Ireland

Capital Value: €200,000

Key Facts: Hydrogeological assessment to determine the impacts on groundwater quality from the dilute and dispense landfill.

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The site was licensed to accept 405,000 tonnes of municipal waste per annum and ceased accepting waste in 2009. FT was retained by the opreators to undertake a hydrogeological assessment of the site.

Significant variations between the modelled water balance for the landfill and the actual values for treated run-off and collected leachate at the landfill site, led to a requirement for a comprehensive re-assessment of the local hydrogeological environment to be carried out.

FT was retained to carry out this study which was achieved by:

•    Field mapping of the landfill to assess varying infiltration rates of different areas •    Utilisation of the HELP (Hydrological Evaluation of Landfill Performance) model to determine estimates of leachate production based on field infiltration observations •    Validation of the model, through comparison of modelled and measured flows.

A site investigation was undertaken to determine the vertical gradients between bedrock groundwater and leachate, and to determine the head of leachate at the site.  This identified significant heads of leachate within the landfill body, which allowed more accurate representation of water balance figures.  This information was then used to assess the adequacy of the existing leachate collection system and conditioning infrastructure on-site, and significant gains in the understanding of the hydrogeology of the site were achieved.  Recommendations for further investigations were also made.

Jeddah-Environmental-Assessment-HydrogeologyJeddah Environmental Assessment – Hydrogeology

Client:  AECOM

Location: Jeddah, Kingdom of Saudi Arabia

Capital Value: N/A

Key Facts: Hydrogeological assessment of the city of Jeddah.

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The overall objective of this assessment being the evaluation of the current state of the environment in Jeddah, the identification of emission sources that had the greatest influence, and the development of achievable and measurable improvement measures that will advance Jeddah from its current state to that of its vision to be a “world class sustainable city”. FT in partnership with Ramboll Middle East was retained to conduct the Jeddah Environmental Assessment (JEA) and develop the Jeddah Environmental and Social Master Plan (JESMP) for the Governorate of Jeddah. As part of this commission FT carried out hydrogeological investigations, analysis and reporting in the unique geology of the Red Sea coast and inland within the wadiis of the Hijaz foothills. These varied conditions comprise soft alluvial sands and clays with high ground water levels, through to highly weathered and faulted granite.

FT’s hydrogeological responsibilities included:

  • A detailed desk study of the hydrogeological regime of the Jeddah province
  • Design, procurement, appointment, management, and supervision of a groundwater drilling programme
  • Design, management, and implementation of a groundwater sampling plan and groundwater quality testing regime
  •  Interpretation and reporting of results in the JESMP report
  • Recommendations for the improvement of groundwater levels and quality for the Jeddah province.


Eamon TimoneyEamon Timoney – Managing Director

Telephone: +353 21 4964133

Email: eamon.timoney@nullftco.ie

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Fehily Timoney Fehily Timoney