AWMS Methane Recovery Project MX06-S-96, Mexico and Puebla, México

Audit Analysis

A CDM methane-avoidance project (AMS-III.D) in Mexico with VVB-confirmed additionality via a barrier test, but significant gaps in leakage treatment, verified ERR figures, and safeguards documentation. Eight material findings were identified and corrected during monitoring, indicating initial documentation weaknesses that were subsequently resolved. The project is mid-crediting-period with no reversal events reported, but the absence of a quantified leakage assessment and a project-specific modeled baseline limit confidence in the credit claims.

Project Description

Red Flags

• ⚠Leakage treatment is inconsistent across documents: the validation report (2007) deems leakage negligible, while the monitoring report (2011) states it was not addressed, leaving no quantified deduction in the record
• ⚠Total verified ERR figure is not found in any available document, preventing an independent cross-check of the 8,189 tCO2e claimed in the 2011 monitoring report
• ⚠Eight material findings in the 2011 monitoring report, including outdated electricity emission factors, missing biodigester design documents, and initially omitted CO2 emissions from facility electricity use, all subsequently corrected
• ⚠Baseline is project-specific and modeled with no reassessment date recorded in the available documents

Credit Vintages

No issuances recorded on the registry.