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CDMMethane avoidanceChinaAMS-III.H

Henan Suixian Longyuan Methane Recovery Project

CDM-8658 ↗

#754of 1084 in China#993of 1459 in CDM (UNFCCC)#29of 55 in AMS-III.H

4.8/ 10
Integrity
5.5
Transparency
4.5
Claim Safety
5.0
Documentation
3.5

Audit Analysis

A CDM methane avoidance project in China with VVB-confirmed additionality via an investment test, but undermined by a project-specific baseline, a thin 0% leakage justification, and an unusually large number of material findings (15) and corrective actions (17) at validation. The low extraction confidence and several missing data points limit the depth of assessment, though the verified ERR aligns almost exactly with the pro-rata expectation for a single monitoring year.

Red Flags

  • 15 material findings and 17 corrective actions were raised during validation, indicating the initial PDD was substantially deficient in technical detail, baseline alignment, and monitoring design
  • Leakage deduction of 0% is justified only as 'deemed negligible' with no quantified analysis or methodological reference in the extracted record
  • Low extraction confidence across the document set means key parameters (FNRB, usage rates, monitoring period, buffer/reversal data) could not be independently verified
  • Baseline characterization is contradictory: the validation report describes it as 'mixed' (measured and modeled) while the PDD states 'modeled' only

Credit Vintages

No issuances recorded on the registry.

Risk Indicators

Additionality

VVB-confirmed investment test; capture not legally required

Permanence

Avoidance project; no carbon storage or reversal risk

Leakage

0% deduction, 'deemed negligible' only, no quantified analys

Baseline

Project-specific baseline; mixed measured/modeled; no reasse

Safeguards

Safeguards mentioned and benefit sharing described; FPIC and

Double-claim

CORSIA and CCP status not stated in available documents

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Analysis ProvenanceScored2026-08-31AMS-III.H, AMS-I.C

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