Yuqing Rural Methane Digesters Project in Guizhou Province.

Integrity

The monitoring report (2021) covers the 2017–2019 monitoring period and reports no material findings and no corrective actions, which supports procedural integrity. However, the extracted record does not include the baseline method or any baseline reassessment timing, and the additionality test type and whether the VVB confirmed additionality were not found. Leakage is a key weakness: the monitoring report (2021) indicates leakage was not addressed, and no leakage deduction value was found.

Transparency

The monitoring report (2021) provides both claimed and verified totals (150,207 claimed vs 136,582 verified) and specifies the usage monitoring method as an annual survey. At the same time, the VVB name was not found in the extracted record, and several quantification elements (baseline method, leakage deduction) are missing, reducing auditability from the extracted dataset. Public eligibility markers (CORSIA/CCP) were also not stated in available documents.

Claim Safety

Because verified ERs are lower than claimed (monitoring report, 2021), the issuance outcome appears to have been tightened through verification, which reduces over-crediting risk relative to self-reported claims. Nonetheless, leakage handling is unclear and contradictory across documents, and the extracted record does not show a leakage deduction or justification in the monitoring report (2021). CORSIA eligibility and CCP status were not stated in available documents, so downstream claims risk cannot be screened out.

Documentation

Three key document types are available (PDD, validation report, monitoring report) and the minimum extraction confidence is high, supporting a solid documentation score. The monitoring report is relatively recent (dated 2021-12-11) and clearly states the monitoring period (2017–2019). However, important identifiers and decision-critical content were not found in the extracted record (e.g., VVB name, baseline method, additionality test type), indicating completeness gaps in the extracted facts.

Overall

Overall quality is moderate: documentation coverage is good and verification reduced ERs versus the claim, but integrity and claim safety are constrained by missing baseline/additionality details and leakage ambiguity. Contradiction addressed: the PDD (2015) indicates leakage was quantified, while the monitoring report (2021) states leakage was not addressed; for scoring, the monitoring report was privileged because it is later and should reflect implemented monitoring and applied deductions during the credited period. This inconsistency signals data reliability/implementation risk and was penalized in integrity and claim safety. Gate rules note: documentation is above 3.0 and integrity is above 4.0, so no caps would be triggered.