Services

Soil & Groundwater Environmental Site Assessment - Due Diligence Studies

Environmental investigation of subsoil is mainly suggested to be performed at industrial and adjacent areas or other activities which may encumber the environment.

Environmental site assessment Phase I
If the investigation of the subsoil aims at obtaining a general environmental image of the examined site and the risk assessment estimation of the potential pollution, then Environmental site assessment Phase I should be chosen.

Environmental site assessment Phase I subsoil investigations include an initial examination by collecting and evaluating all the historic data concerning the site and the wider area.

This data concerns wastewater and solid waste management, type of air emissions, storage of raw materials, toxic and other chemicals, the past or current production process. Furthermore all geological, hydrogeological and hydrological data, concerning the site and the wider area are collected and assessed (eg aquifer system, geological formations, surface waters, land use, etc).

Environmental site assessment phase II

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bounding box Geological section in a representative occasion of groundwater contamination by a point source - leak bounding box
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bounding box Geological section in a representative occasion of groundwater contamination by a point source - leak bounding box
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In case that the scope of the environmental site assessment is the precise registration of the environmental condition of the subsoil, as well as the evaluation of the environmental risk of potential contamination and the cost of the necessary clean up measures, environmental assessment phase II is implemented.

Environmental site assessment phase II succeeds phase I and it includes detailed registration of subsoil status in the whole area of investigation.

This investigation is comprised by small diameter drilling operations and sampling of soil and groundwater. The depth of sampling drillings and the comprehensiveness of parameters which will then be analysed in soil, soil-gas and groundwater differ by occasion and are based on the results of phase I.

Furthermore there is also the possibility of on site measurements and analyses in the field, in order to reduce the number of laboratory analyses and the duration of result evaluation.

Subsequently, according to the results the environmental risk is defined and the remediation cost of subsoil and groundwater is evaluated (if considered necessary, according to the present environmental risk).

At the end a final report of environmental site assessment is prepared, which includes the detailed results, their evaluation, the calculated environmental risk and a first proposal for remediation (if necessary).

All the above actions and ESA results are confidential. INTERGEO will not use or publish the investigation results, without permission of the employer or the delegate environmental authorities.

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bounding box 3D display of underground soil contamination dispersion bounding box
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bounding box 3D display of underground soil contamination dispersion, based on the environmental assessment results (contamination of groundwater by a point-source - leak) bounding box
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Relative experience
INTERGEO group has successfully completed internationally over 30,000 environmental soil investigations and has successfully remediated more than 2,500 contaminated fields (subsoil or / and groundwater).

In Greece, INTERGEO Hellas has completed numerous environmental projects in the whole country and Cyprus. In total more than 1,200 environmental investigations in soil, water and air have been successfully accomplished, as well as a significant amount of remediation projects of soil and groundwater in Greece and Cyprus.

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bounding box Contamination by storage and transportation of oil products bounding box
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bounding box Contamination by storage and transportation of oil products bounding box
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bounding box Contamination by storage of hazardous waste bounding box
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bounding box Contamination by storage of hazardous waste bounding box
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Intergeo Hellas has applied numerous Environmental Site Assessments Phase I and Phase II in industrial sites and free plots in the frame of Due Diligence projects in Greece, Cyprus, Egypt and in the Balkans (Serbia, Bulgaria, Albania). In the last 5 years INTERGEO Hellas has completed successfully over 20 big Due Dilligence projects for various multinational clients (Industry, Environmental consultants, Real estate, financial investors etc)

Below as case study is presented the following project:

Hellenic Petroleum SA Acquisition of the business and assets of BP Pl’s Greece Ground Fuels Marketing Business (May – June 2009)