Map layer: Pollution
The Pollution category brings together layers for contaminated land and noise in one place. It is useful for a full environmental review of a property or a planning area, either as part of due diligence when buying or when preparing for a zoning plan process where environmental factors must be documented.
Layers in this category (5)
| Layer | Description | Source |
|---|---|---|
| Contaminated land | Properties with contaminated land and landfills | Miljødirektoratet |
| Rail/metro/tram noise | Calculated average noise from railways and light rail | Miljødirektoratet |
| Noise mapping (T-1442) | Noise warning map with yellow and red zones | Miljødirektoratet |
| Soil Contamination – Areas | The service covers properties with contaminated land as well as municipal and private/industrial landfills | Miljødirektoratet |
| Road noise | Average day-evening-night noise (Lden) from road traffic at 4 metres above ground | Miljødirektoratet |
Contaminated land
Shows properties registered with contaminated land in the Miljødirektoratet database, as well as municipal and private landfills. A property on the list does not necessarily mean that ground pollution has been confirmed at a harmful level, but that historical activity or suspicion has been registered and needs to be clarified. For development on or near such properties, the authorities normally require an environmental ground survey.
⚠️ The register is not complete: properties with historical industrial activity may be missing an entry, especially for older industry. A negative search is not a clean bill of health.
About the map layer
Properties with contaminated land and municipal/private/industrial landfills, based on mapping and reporting.
Update frequency: Real time.
Rail/metro/tram noise
Calculated average noise from railways and light rail. See Noise for the full description.
About the map layer
Average Lden noise from railways at 4 metres above ground. Modelled data; shows lines with at least 30,000 trains per year outside the cities (situation around 2016).
Update frequency: Updated manually.
Noise mapping (T-1442)
Noise warning map with yellow and red zones under the national guideline. See Noise for the full description.
About the map layer
Forecasts for red (Lden>65 dB) and yellow (Lden>55 dB) noise zones along national and county roads, calculated with NorStøy (Nord2000Road) based on traffic data from NVDB.
Update frequency: Weekly.
Sublayers (10)
| Sublayers | Description |
|---|---|
| Noise mapping – roads (T-1442) | Noise mapping of road traffic under guideline T-1442. |
| Rock unit (area) | Area layer for road noise mapping. |
| Noise zones – Avinor airports | Noise zones for airports operated by Avinor. |
| Rock unit (area) | Area layer for airport noise mapping. |
| Noise zones – Bane NOR railway network | Noise zones for the national railway network. |
| Rock unit (area) | Area layer for railway noise mapping. |
| Noise zones – Armed Forces airports | Noise zones for military airports. |
| Rock unit (area) | Area layer for military airport noise mapping. |
| Noise zones – Armed Forces shooting & training areas (T-1442) | Noise zones for military shooting and training areas under T-1442. |
| Rock unit (area) | Area layer for shooting/training area noise mapping. |
Soil Contamination – Areas
The service covers properties with contaminated land as well as municipal and private/industrial landfills. The dataset comes from mapping of sites with confirmed or suspected ground pollution and from reports made in connection with building and excavation cases, required surveys or voluntary submissions.
About the map layer
The service covers properties with contaminated land as well as municipal and private/industrial landfills. The dataset comes from mapping of sites with confirmed or suspected ground pollution and from reports made in connection with building and excavation cases, required surveys or voluntary submissions.
Road noise
Average day-evening-night noise (Lden) from road traffic at 4 metres above ground. Modelled values, not measurements.
About the map layer
Average day-evening-night noise (Lden) from road traffic at 4 metres above ground. Modelled values, not measurements.
Update frequency: Updated manually.
Tips
- Combine Contaminated land with Geology to see the types of superficial deposits that can affect the spread risk for pollution.
- Contaminated land and noise are two of the most common environmental factors in zoning plan processes. Turn on both layers early to avoid surprises late in the process.