Tongxu Biogas Recovery and Utilization Project

Audit Analysis

The Tongxu Biogas project is a VCS-registered biogas recovery project with a VVB-confirmed investment additionality test, but the verification record reveals 11 material findings, two corrective action requests, and an inconsistency in the additionality test type across validation reports. Leakage is described as quantified but no deduction figure is stated, and operational monitoring details (usage tracking, storage verification) are absent from the extracted record. The project is functional and registered, but documentation quality and data completeness are moderate concerns.

Project Description

Red Flags

• ⚠Two Corrective Action Requests were raised during validation — one on project activity description and one on methodology applicability and standardized baseline — indicating the project description and baseline setup required correction before approval.
• ⚠The additionality test type is inconsistent across two validation reports: the August 2022 report references a combined test while the October 2022 report states an investment test, and a material finding notes that the application of CDM TOOL27 (a combined-test tool) was not clearly confirmed.
• ⚠Leakage is described as 'quantified' in the verification report, yet no deduction percentage or absolute figure appears anywhere in the extracted record, leaving the actual leakage treatment unverifiable.
• ⚠Free, Prior and Informed Consent (FPIC) was not conducted, and benefit-sharing is not described in the most recent monitoring report (June 2024), despite being described in the earlier January 2023 report.

Credit Vintages