Summary
Details
- Mexico
Mandatory for establishments within scope per the RETC framework and relevant regulations.
Exceptions occur for facilities outside scope, below threshold triggers, or not engaged in covered activities. Facilities should document non-applicability determinations to reduce inspection risk.
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What’s Required
For covered facilities, COA/RETC compliance requires disciplined annual reporting, consistent boundaries, and auditable records:
Applicability determination: Facilities must determine whether they are subject to COA/RETC reporting based on scope triggers defined in applicable regulations and agreements. This includes establishment type, activity, and potentially pollutant handling thresholds under the RETC framework.
Annual submission of COA format: Facilities must complete the official COA format and submit it within the established reporting window, following the instructions and official format.
Pollutant accounting and methodology: COA requires compiling releases and transfers by medium (air, water, soil, waste), using defined methods and maintaining underlying calculations, sampling data, and activity records. Facilities must ensure internal consistency, especially where data overlaps with other reporting regimes.
Document retention and audit readiness: Facilities should maintain records supporting each reported figure, including monitoring results, waste manifests, treatment/disposal contracts, and process data. This is necessary for inspections and for resolving discrepancies.
Coordination with environmental permits: COA/RETC reporting typically interacts with air and water permits and hazardous waste obligations. Reported data should reconcile with permit monitoring records and third-party waste documentation.
Important Deadlines
Agreement basis: DOF agreements establish the COA instruction and reporting format and have been updated historically through modifications and additions.
Annual reporting cadence: COA is an annual report; companies must align internal data closure calendars with submission windows set by SEMARNAT/competent authorities.
Current Status
In force as the operational system for pollutant release and transfer reporting, with official resources maintained by SEMARNAT channels.
Penalties for Non-Compliance
Non-compliance risk includes:
administrative sanctions for late, incomplete, or false reporting,
heightened inspection attention,
corrective actions and potential permit-related consequences if COA data suggests permit breaches.
Examples of Known Violations
missing or incomplete pollutant inventories (particularly for fugitive air emissions or wastewater discharges),
inconsistent waste transfer reporting (mismatched manifests vs reported totals),
poor boundary definition across multiple sites,
inadequate documentation supporting emission estimates (use of unsupported factors).
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