Chia Tai AWMS GHG Mitigation Project in Guangdong Province

Audit Analysis

The Chia Tai AWMS project is a registered VCS anaerobic digestion project with confirmed additionality and closed corrective actions, but suffers from significant data gaps in permanence, leakage quantification, and ERR reconciliation. The identical claimed and verified ERR figures, combined with a major PDD revision (from ~1.5M to ~162K tCO2e), raise over-crediting concerns that cannot be fully resolved with available documentation.

Project Description

Red Flags

• ⚠Total ERR claimed (161,963 tCO2e, PDD 2023-10-16) is identical to total ERR verified for a single 16-month monitoring period, implying the project delivered 750% of its pro-rata lifetime expectation in 16 months — a ratio that is either a data extraction error or a serious over-crediting signal
• ⚠PDD ERR figure dropped from 1,503,110 tCO2e (PDD 2022-08-22) to 161,963 tCO2e (PDD 2023-10-16), a ~90% reduction, with no documented explanation for the revision
• ⚠Reversal events are listed as 'not addressed' in the verification report; no buffer pool percentage is stated
• ⚠Leakage is described as 'quantified' but the actual deduction percentage is not stated in any available document
• ⚠CORSIA eligibility and CCP status are not stated in any available document, leaving dual-channel risk unassessed

Credit Vintages