Prevent the dispersal of alien species

Groups: 
  • Design-Build Contracts
Category: 
  • Ecology and Surface Water

Basic

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

Activities linked to the operation and maintenance of infrastructure and construction works are challenging with regard to preventing the further dispersal of harmful alien species. To prevent such dispersal, you can combat the occurrence (with the goal of eradicating), limit the occurrence or carry out no treatment.

Alien species often displace local biodiversity and therefore pose a major threat to Norwegian nature. Species that are considered to pose a high or very high ecological threat to Norwegian natural diversity are registered in the Black List. Many alien species which must be combated are often dispersed to new areas during the relocation of materials.

By stipulating requirements regarding the registration, assessment and possible removal of alien species, you will prevent the unwanted dispersal of alien species, and thereby also safeguard valuable natural diversity. Appropriate procedures for the handling of materials and the cleaning of equipment will reduce the risk of introducing alien species.

Requirement Specification: 

The construction work must be carried out in a way which minimises the impact on biodiversity. The dispersal of alien species must be prevented by avoiding the dispersal of soil and plant material. The supplier must investigate whether alien species are present in the area and prepare a report which is completed well in advance of the completion of the planning of the facility, so that the developer has the opportunity to address the recommendations in the report.

  • The supplier must treat materials which could contain seeds or other dispersible parts of alien species, to prevent them from being dispersed.
  • The supplier must document that materials that have been brought into the area covered by the plan are clean, to ensure that alien species are not brought into the area.
  • Measures must be implemented to prevent the dispersal of aggregates during transport.
  • Machinery and equipment must be clean upon arrival at the construction site.
  • The cleaning of materials that have come into contact with materials which could contain seeds from alien species or plant/soil diseases must be carried out in locations where the wastewater is treated. The cleaning of materials that have come into contact with unwanted species must be carried out prior to transportation to other parts of the area.
  • Implement measures to prevent alien species from becoming established and/or dispersed from compound areas during the construction period.

Any harmful alien species (such as Japanese knotweed, giant hogweed, large-leaved lupines, Canada goldenrod, bunias orientalis, Himalayan balsam, etc.) that are observed during the construction works must be registered in the non-conformity system, and measures implemented immediately.

The supplier must document the removal of alien species:

  • Through photographs
  • A description of transportation and destruction, e.g. through a receipt from an approved landfill facility

Documentation of the Requirement Specification: 

The report on alien species must include at least the following:

  • Registration (SOSI) of individual species with associated map coordinates
  • Table containing the names and brief descriptions of the species
  • Confirmation that the species are registered in the species database
  • Plan concerning the species which should be combatted and proposals as to how to remove them
  • Species must be registered in species observations 

Information about the Requirement Specification: 

Although the legislation regulates alien species, experience indicates that compliance with this legislation is poor. The requirement clarifies the measures that the supplier must implement and what you as the client should follow up.

In the case of alien species, the requirement is particularly relevant as regards construction projects close to valuable habitats and vulnerable natural environments, and less relevant in dense urban areas. Inspections should therefore be carried out as close to the start of development as possible. In order to identify as many species as possible, at least two inspections should be carried out between May and September. A search in the Norwegian Environment Agency's nature database map service for valuable habitats in the surrounding area may show which species are indigenous at the site. A few years after the end of the construction work, the area should be checked for alien species, and consideration given to whether measures to remove such species should be implemented.

You should also consider whether there are any local action plans which provide guidance as regards the preservation of natural diversity in the area.

Advanced

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

Activities linked to the operation and maintenance of infrastructure and construction works are challenging with regard to preventing the further dispersal of harmful alien species. To prevent such dispersal, you can combat the occurrence (with the goal of eradicating), limit the occurrence or carry out no treatment.

Alien species often displace local biodiversity and therefore pose a major threat to Norwegian nature. Species that are considered to pose a high or very high ecological threat to Norwegian natural diversity are registered in the Black List. Many alien species which must be combated are often dispersed to new areas during the relocation of materials.

By stipulating requirements regarding the registration, assessment and possible removal of alien species, you will prevent the unwanted dispersal of alien species, and thereby also safeguard valuable natural diversity. Appropriate procedures for the handling of materials and the cleaning of equipment will reduce the risk of introducing alien species.

Requirement Specification: 

The construction work must be carried out in a way which minimises the impact on biodiversity. The dispersal of alien species must be prevented by avoiding the dispersal of soil and plant material. The supplier must investigate whether alien species are present in the area and prepare a report which is completed well in advance of the completion of the planning of the facility, so that the developer has the opportunity to address the recommendations in the report.

  • The supplier must treat materials which could contain seeds or other dispersible parts of alien species, to prevent them from being dispersed.
  • The supplier must document that materials that have been brought into the area covered by the plan are clean, to ensure that alien species are not brought into the area.
  • Measures must be implemented to prevent the dispersal of aggregates during transport.
  • Machinery and equipment must be clean upon arrival at the construction site.
  • The cleaning of materials that have come into contact with materials which could contain seeds from alien species or plant/soil diseases must be carried out in locations where the wastewater is treated. The cleaning of materials that have come into contact with unwanted species must be carried out prior to transportation to other parts of the area.
  • Implement measures to prevent alien species from becoming established and/or dispersed from compound areas during the construction period
  • Measures must be considered to replace lost natural values near the facility.

Any harmful alien species (e.g. Japanese knotweed, giant hogweed, large-leaved lupines, Canada goldenrod, bunias orientalis, Himalayan balsam, etc.) observed during the construction works must be registered in the relevant non-conformity system, and measures implemented.

The report from the supplier must be completed well in advance of completion of the project plan, so that the developer has the opportunity to address the recommendations in the report.

The supplier must document the removal of alien species:

  • Through photographs
  • A description of transportation and destruction, e.g. through a receipt from an approved landfill facility

Documentation of the Requirement Specification: 

The report on alien species must include at least the following:

  • Registration (SOSI) of individual species with associated map coordinates
  • Table containing the names and brief descriptions of the species
  • Confirmation that the species are registered in the Species Map
  • Plan concerning the species which should be combatted and proposals as to how to remove them
  • Species must be registered in species observations

Information about the Requirement Specification: 

Although the legislation regulates alien species, experience indicates that compliance with this legislation is poor. The requirement clarifies the measures that the supplier must implement and what you as the client should follow up.

In the case of alien species, the requirement is particularly relevant as regards construction projects close to valuable habitats and vulnerable natural environments, and less relevant in dense urban areas. Inspections should therefore be carried out as close to the start of development as possible. In order to identify as many species as possible, at least two inspections should be carried out between May and September. A search in the Norwegian Environment Agency's nature database map service for valuable habitats in the surrounding area may show which species are indigenous at the site. A few years after the end of the construction work, the area should be checked for alien species, and consideration given to whether measures to remove such species should be implemented.

You should also consider whether there are any local action plans which provide guidance as regards the preservation of natural diversity in the area.

Related links: 

Published: 25. Nov 2020, Last modified: 26. Nov 2020