The 6th guide of the National Environmental Remediation Program provides methodological assistance for the planning, implementation and documentation of the site investigations of polluted areas, as well as for the planning, operation and control of the monitoring systems in the different phases of remediation.
Pieces of legislation providing relevant regulations are Government Decree 33/2000. (III. 17.) Korm. on activities affecting the quality of groundwater (hereinafter referred to as “GD”) and the closely related Joint-decree 10/2000. (VI. 2.) KöM-EüM-FVM-KHVM on limit values established for the protection of groundwater and the geological medium (hereinafter referred to as “JD”).
The GD provides for regulations on the prevention of pollution of groundwater and the geological medium, on the reduction and elimination of contamination and damage in cases of pollutant-concentrations exceeding limit values.
Acc. to Paragraph (1) of Article 18 of GD remediation consists of the following phases
- a) site investigation, which may comprise preliminary site investigation and detailed site investigation,
- b) technical intervention,
- c) monitoring.
Out of the above mentioned phases this guide deals with site investigation and monitoring.
Regulations on site investigation are specified in Articles 19-22 of GD, Article 26 prescribes the rules on monitoring.
The background concentration value (A), the pollution limit value (B) and the intervention pollution limit value (Ci) – the definitions of which are specified in Article 3 of GD and Annex 1 of JD - determined per groups of substances are indicated in Annex 2 of JD for soil and geological medium, and Annex 3 for groundwater. Beyond the above mentioned tables of limit values the GD specifies the remediation pollution limit value (D): it means the concentration prescribed in an official ruling to be achieved by remediation with the aim of preventing any damage to human health and ecosystems. This value is to be determined on the basis of a complex assessment carried out as part of the remediation procedure, including measurements of pollutant distribution in environmental elements, its behaviour, transport and extent as well as modelling and site specific quantitative risk assessment carried out with regard to the land uses. The requirements to be considered while determining the remediation pollution limit value (D) are specified in Article 21 of GD.
Site investigation may only be performed by qualified and entitled persons. Experts need
- the license for the conduction of environmental audits (granted by the Ministry for Environment and Water authorised by the Ministerial Decree 12/1996. (VII.4.) KTM);
- accreditation for sampling (issued by the Hungarian Accrediting Body authorised by Act XXIX of 1995).
Chemical analyses in connection with site investigation may be performed by accredited laboratories.
If planning activities are part of the site investigation the following further entitlements are recommended:
- Designer category “A” (leading designer) entitling for the construction of hydraulic structures in the field of hydrogeology (granted by the competent Chamber of Engineers authorised by the Government Decree 157/1997. (IX.26.) Korm. and the Ministerial Decree 3/1998. (II.11.) KHVM);
- Leading designer entitlement for geotechnics in the fields of environmental geotechnics and geology, engineering geology (granted by the competent Chamber of Engineers authorised by the Government Decree 157/1997. (IX.26.) Korm. and the Ministerial Decree 3/1998. (II.11.) KHVM);
- Environmental expert’s entitlement in the fields of rock- and soil protection, water quality protection and environmental state assessment (issued by the Ministry for Environment and Water authorised by the Decree 6/1985. (XII. 28.) OKTH).
Geological data gained in the course of field investigations should be handled acc. to Annex 1 of the Joint Decree 4/1997. (III.. 5.) IKIM-KTM-KHVM on the range and delivery of geological research data to the Hungarian Geological Survey.