HYGEIA HYbrid GEophysical technology for the evaluation of Insidious contaminated Areas

Country: EU Projects
Start Date:   1/12/2001         Duration: 36 months         Project Type: RTD
Contract Number: EVK4-CT-2001-00046
Organisation Type:  EC Project
Contaminated land-->Site investigation-->Methods
Project objectives:
Rehabilitation of brownfields, contaminated sites and waste disposal sites is a crucial issue in the perspective of sustainable development and is a costly 
task, which affects the planning of urban and infrastructure development. With the present assessment techniques, the estimate of the budget required for
rehabilitation is often very rough and the risk of an unexpected remarkable growth of the costs during operations strongly discourages the private investments
on brownfields. Thus, for effective rehabilitation planning and engineering safety and efficiency, it is extremely important that sub-surface is accurately
imaged prior to the commencement of remediation. Currently, however, there is no dedicated technology that can provide reliable and consistent high resolution
sub-surface information for the wide variety of ground conditions met in this field. Geophysical methods have a tremendous potential for the 3-D evaluation
of used/contaminated ground but current techniques are unfit to satisfy end-user's requirements. There is an urgent need for a reliable non-intrusive technology
for subsurface characterisation of contaminated land based on an integrated approach.
Project Summary:
Scientific objectives and approach    
The project is designed to address this problem for the most important brownfield typologies by development of a combination of geophysical techniques 
(seismics, GPR, resistivity) capable of mapping heterogeneities in the 0-50 m space without disturbing the medium by means of highly cost-effective and rapid
acquisition, processing and inversion/interpretation of data. The proposed system shall provide * full 3-D imaging of brownfields and contaminated sites to the depth of interest for rehabilitation purposes * identification of pollution sources, contaminants flow paths and accumulation and * evaluation of connections between brownfields and aquifers. Advancement of the state-of-the-art will be pursued through * development of dedicated acquisition tools to enhance performances of Ground Penetrating Radar (GPR) and multi-component seismic prospecting * development of novel dedicated procedures based on the integration of the geophysical methods applicable to the different typologies of brownfields
and contaminated sites (seismics, GPR, resistivity) and * implementation of algorithms to obtain enhanced information from brownfields and contaminated sites, with particular reference to processing, inversion
and modelling software dedicated to integrate seismic and GPR data analysis. Further objective of the project is the definition of guidelines, applicability,
limits and costs of correct and effective use of proposed technology.
Achieved Objectives:
Expected impacts    
HYGEIA will provide    
* classification of brownfield and contaminated sites of use to plan management and rehabilitation based on information about past use of land    
* survey technologies based on the integration of seismics, resistivity and GPR. Among them, surface waves and Same Wavelength Electromagnetic and Elastic 
Prospecting (SWEEP) to overcome present limits of the individual geophysical methods * innovative seismic and GPR data acquisition tools for enhanced shallow high resolution prospecting * original software for data processing, modelling, inversion and interpretation, which is instrumental to obtain enhanced subsurface information and
push the proposed geophysical methods to their limits * databases of physical properties and geophysical data from laboratory and field experiments that will help selection of useful techniques in future studies
* Theoretical models and simulation algorithms which allow quantitative validation of survey results * Decision support system and end-users guidelines which will serve as reference forrehabilitation industry and allow safe and cost-effective exploitation
of the proposed technology. * In synthesis, end-users may expect to obtain from the project databases and technology for rapid and cost-effective high-resolution non-invasive evaluation
of used/contaminated land to minimise costs and risks of rehabilitation actions
Product Descriptions:
The decision support tool developed is GeoPASS  
GeoPASS is a PC-based decision support system for the selection of an optimal geophysical technique for subsurface reconnaissance on land.   
GeoPASS includes modules for:   
electrical resistivity method   
electrical resistivity tomography (bore hole to bore hole)   
time domain electromagnetic methods   
electromagnetic induction method (conductivity meters)   
ground penetrating radar (50 MHz and a user selected frequency)   
induced polarisation   
metallic object detection (includes magnetic method and metal detectors)   
seismic reflection techniques   
spectral analysis of surface waves   
The geophysical methods can be assessed on the detection chance on four target categories:   
layers (including LNAPL's)   
pollution plumes   
DNAPL's/solid waste/objects/cavities   
Its home page is: http://www.nitg.tno.nl/eng/projects/geop ... 
Additional Information:
Web site http://www.hygeia-eu.org appears to be non-functional 
Project Resources:

GeoPASS Use the optimal geophysical technique for your subsurface investigations
Funding Programme(s): 
EC Framework Programme 5
Link to Organisations:

The Netherlands Organization for Applied Scientific Research TNO
Submitted by: EUGRIS Team Professor Paul Bardos  Who does what?  09/10/2006 10:18:00
Updated by: EUGRIS Team Professor Paul Bardos  Who does what?  09/10/2006 10:19:00