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The geology and fresh ground water lens development in a typical Pacific atoll are described together with a method for hydrogeological investigation. The fresh water resources of such lenses are investigated using Tarawa as an example. It is shown that simple steady state solutions cannot be realistically applied, and that despite the paucity of hydrogeological data, which is considered typical of such islands, practical nonsteady state solutions allow resource assessments. The susceptability of lens resources to drought conditions is demonstrated.

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Purpose -The paper proposes addressing the design and implementation of a web-based risk assessment system that enables remote project team members to assess the risks at the conceptual design stage. Design/methodology/approach -The prototype system is based on a client/server architecture and uses fuzzy logic and web-based technology. A risk assessment scenario is used to demonstrate the operation and benefits of the prototype system. Findings -The research found that the use of a web-based risk assessment system for distributed project team members has major benefits in terms of use of linguistic terms to express risk assessment, ease of communication, ease of maintenance, and greater consistency, among others. Research limitations/implications -There is scope for enhancing the system through the development of a risk management module, improving the user interface and making specific provisions for different project types. Practical implications -The move in industry towards collaborative working practices is supported by systems such as this. Risk assessment is an important area that requires the input of all team members, if evenly distributed. Originality/value -This paper has presented an innovative approach to risk assessment for distributed project teams. It will be of interest to all parties involved in construction projects, particularly those involved in risk assessment.

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