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Miljøprojekt, 1147 – Håndbog - Byggetekniske foranstaltninger i forbindelse med byggeri på forurenede lokaliteter
Summary
Environmental authorities
often need to assess which methods of remediation are most technically,
economically, and environmentally suited to protect either existing buildings or
future buildings against unacceptable impacts from soil pollution on the indoor
climate.
The overall objective in
this project has been to develop a tool (handbook) that can help the
environmental authorities with the above- assessments concerning establishment
of technical methods for the protection of the indoor climate.
Effective remediation of
unacceptable spreading of pollution in the indoor climate in buildings is
dependent on a thorough knowledge of the potential distribution mechanisms of
the pollutants. Therefore, the handbook contains a general explanation of
relevant mechanisms and transport paths for volatile pollutants from soil
pollution to the indoor climate in buildings.
The pollution impact on
the indoor climate in a building is determined by the type of building
construction, the general state of the building, and the physical and chemical
properties of the pollutants. Furthermore, the spreading potential is dependent
on the magnitude of the pollution and its location under the building.
Decisions on the technical
methods of remediation to be established in existing buildings require a
thorough knowledge of the structural conditions as these are essential to
determine the pollutant distribution in the building. This knowledge is
primarily achieved by technical examinations and registration of the potential
transport paths. Therefore, the handbook contains a general description of the
scope of a technical examination.
The handbook also contains
a general classification of buildings according to remedial actions necessary.
Remediation category 1 comprises old buildings in poor condition, remediation
category 2 comprises buildings in acceptable condition, and remediation category
3 comprises new buildings.
This classification and
the technical examination of the individual property, together with the
pollution investigations (not described in this project), make up the basis on
which to choose the most advantageous remedial solutions.
The handbook gives a
general presentation of the following selected technical methods for remediation
of existing buildings:
·
Sealing of
constructions
·
New floor
construction
·
Ventilation
under floors
·
Ventilation of
basement/crawl space
·
Other
remediation activities
Furthermore, the handbook
gives a general presentation of the following selected technical methods of
remediation for new buildings:
·
Sealing of
constructions
·
New floor
construction
·
Ventilation
under floors
The selected technical
remedial measures are considered the most commonly applied techniques. The
remedial measures are described in relation to the remediation principle, the
required construction work, and the necessary control measures before and during
establishment. In the appendix to the handbook, suggestions for checklists for
the technical examination and test/control before and during the establishment
of the remedial measures are given.
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Version 1.0 Januar 2007, © Miljøstyrelsen.
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