Official monitoring stations and contextual locations
The primary layer displays active English AURN monitoring stations used in the 30-day review. The context layer retains the supplementary context locations for navigation only. Proximity is not evidence of contribution.
Urban/background monitoringRoadside monitoringRural monitoringContext location
Location evidence map
Location network fallback. The interactive OpenStreetMap layer replaces this view when available.
Map points provide navigation to location context and evidence dossiers. They are not environmental-health findings and are not source-attribution findings.
Browse locations
No post-discovery context locations were activated.
Interpretation boundary
This is a navigation and provenance map. It is not a dispersion model, exposure assessment, permit-compliance finding, health-risk map or causal source-attribution determination.
Scientific evidence and software assurance are different
Scientific evidence
Measurements, station and regional coverage, descriptive calculations, source records and stated limitations are the evidence available for review.
Engineering assurance
Automated checks confirm that the pipeline followed its declared rules. They do not constitute peer review, accreditation, regulatory approval or institutional endorsement.