Site operational noise levels, frequencies and regulatory-exceedance incidents
Measurement answer
What this metric measures
Reports site noise conditions before and during operations, including measurements at nearby noise-sensitive habitat and incidents exceeding applicable regulatory requirements.
Specification
Metric specification
- Result format
- Multi-field profile
- Unit
- dB; Hz; number of incidents — source-defined reporting unit
- Reporting basis
- Baseline period before site operations and operational phase
- Aggregation
- Average noise level or frequency by measurement period, daily period and location; count of regulatory-exceedance incidents
- Pillar
- Environmental
- Topic
- Pollution
- Controlled domain
- Pollution
- Entity type
- Metric
Reporting boundary
Site operations and the nearest noise-sensitive habitat
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Page 70, Additional sector metrics table, Impact driver > Pollution/pollution removal, CM.A2.2
- Adopting DisclosureCM.A2.2
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, January 2025
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 70, Additional sector metrics table, Impact driver > Pollution/pollution removal, CM.A2.2
Value structure
Dimensions and units
- Unit
- dB; Hz; number of incidents — source-defined reporting unit
- Reporting basis
- Baseline period before site operations and operational phase
Unit meaning: Values use dB; Hz; number of incidents under the disclosed TNFD sector-guidance method, reporting period and boundary.
Table fields and units
- measurement phase
- measurement location
- daily measurement period
- reported measure type
- average noise level or frequency
- unit
- applicable regulatory requirement
- number of exceedance incidents
Published dimensions
- measurement phase: baseline or operational
- measurement location: on-site or nearest noise-sensitive habitat
- daily measurement period
- noise level
- noise frequency
- applicable local or international regulatory requirement
- regulatory-exceedance incident
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. CM.A2.2 is a standalone structured additional-sector metric family with explicit baseline-to-operation comparison, location qualifiers and an independently reportable exceedance-incident count. Its operational-phase boundary differs from the construction-specific EH.A2.1 construct.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Page 70, Additional sector metrics table, Impact driver > Pollution/pollution removal, CM.A2.2
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Site operational noise levels, frequencies and regulatory-exceedance incidents”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- State whether average noise level, noise frequency, or both are reported.
- Identify baseline and operational measurement periods, including the specified daily periods such as sunrise, sunset, daytime or the noisiest period.
- Identify on-site and nearest noise-sensitive-habitat measurement locations.
- Disclose the local or international regulatory requirement used to identify exceedance incidents.
Record-specific limitations
- The metric compares baseline and operational conditions and therefore does not independently represent other lifecycle phases.
- The source allows average noise levels or frequencies and requires retention of the selected measure and measurement approach.
- Applicable regulatory thresholds can vary by location; the threshold used must be disclosed.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.