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Reviewed 26 October 2026. Original publication date retained: 2023-08-22.
An improvement claim needs a clear boundary, a reliable starting point and consistent measurements. A percentage reduction should not be attributed to certification without supporting evidence.
Questions to follow in an audit
- Which activities and sites are included in the measurement?
- How are data sources checked and changes explained?
- Who reviews progress against the environmental objective?
Connect the records with practice
Compare the objective, baseline calculation, recent readings and management's response to an unexpected change in results.
These are illustrative audit trails, not findings about a named organisation, technical instructions or a guarantee of a particular result. The appropriate evidence depends on the activities, risks and agreed scope. The organisation remains responsible for its operations and legal obligations.
AAA provides independent certification audits. Confirm the applicable standard edition, scope and customer requirements before agreeing a programme. Request an indicative price or discuss your proposed audit.
Further reading: ISO environmental management.