ECC methane capture and combustion from AWMS at dairy farms in Mexico – I

Audit Analysis

This CDM methane-avoidance project at Mexican dairy farms has VVB-confirmed additionality but suffers from significant data gaps: no monitoring-period emissions data, a 100-fold discrepancy in claimed ERR between the PDD and validation report, and a contradiction in how leakage was treated. The project-specific modeled baseline, absence of any stated buffer pool, and low extraction confidence across 12 documents limit confidence in the credit's integrity and verifiability.

Project Description

Red Flags

• ⚠100-fold discrepancy in total ERR between the PDD (457.565) and the validation report (45,757) — the PDD figure may be a per-year value or a typographical error, but the inconsistency undermines data reliability
• ⚠No monitoring-period emissions data or verified ERR figures found in any available document, making it impossible to confirm actual delivery against the ex-ante estimate
• ⚠Leakage justification contradicts between documents: the validation report states leakage was 'deemed negligible' while the PDD indicates it was 'quantified', with a 0% deduction applied
• ⚠Low extraction confidence across the document set, with one document of unknown type, reducing confidence in the completeness of the evidence base

Credit Vintages

No issuances recorded on the registry.