AWMS Methane Recovery Project MX06-S-20, Yucatan, México

Audit Analysis

A CDM methane-avoidance project in Yucatán, Mexico, with VVB-confirmed additionality but a project-specific modeled baseline that triggered five material findings and twelve corrective actions during validation. The monitoring report shows the project delivered only about 31% of the pro-rata expected emissions reductions for the elapsed period, which is protective against over-crediting but raises questions about baseline accuracy. Leakage treatment is inconsistent across documents and several key MRV parameters remain unreported.

Project Description

Red Flags

• ⚠Twelve corrective actions were required during validation, including corrections to the AWMS description, animal inventories, construction dates, and emission factors — indicating the initial PDD contained material inaccuracies.
• ⚠Leakage justification is contradictory: the validation report (2007) states leakage was 'deemed negligible' while the monitoring report (2010) records it as 'not addressed', with a 0% deduction in both cases.
• ⚠The verified ERR figure for the monitoring period is not stated in the extracted record, making independent verification of actual performance impossible from available documents.
• ⚠Baseline was initially inconsistent with actual manure handling practices (concrete basins described as lagoons) and animal inventories were outdated, undermining confidence in the modeled baseline.

Credit Vintages

No issuances recorded on the registry.