Hasars Landfill Gas Project

Audit Analysis

The Hasars Landfill Gas Project (CDM-1240, Mexico) has VVB-confirmed additionality via a combined test and a reasonable 0% leakage deduction for a landfill gas capture project, but suffers from the absence of a buffer pool, several open corrective actions, and material contradictions in baseline characterization and grid emission factor across documents. The project delivered only about 27% of its pro-rata expected emissions reductions for the elapsed monitoring period, which is conservative but raises questions about baseline calibration. Overall, the project is moderately robust with notable data gaps and unresolved monitoring issues.

Project Description

Red Flags

• ⚠No buffer pool or permanence mechanism is stated in any available document, leaving reversal risk unaddressed for a 7-year crediting period
• ⚠Three corrective actions remain open (biogas meter specifications, management/emergency plans, local environmental regularization plan) as of the 2011 monitoring report
• ⚠The project delivered only ~27% of the pro-rata expected ERR for the elapsed monitoring period (74,704 vs ~275,469 expected), suggesting the PDD baseline may be overestimated
• ⚠Grid emission factor contradicts between the monitoring report (0.5036) and an appendix (0.6803), a 35% discrepancy that affects baseline calculations
• ⚠Baseline is characterized as 'modeled' in the validation report but 'measured' in the PDD, creating ambiguity about the robustness of the baseline

Credit Vintages