Dak Lak Wastewater Treatment with Biogas System and Methane Recovery

Audit Analysis

A VCS-registered wastewater-to-biogas project in Vietnam with a solid additionality assessment (combined test, VVB-verified) and inherently low permanence risk, but undermined by four contradictions between the PDD and validation report, a project-specific modeled baseline, absence of FPIC, and low extraction confidence across the document set. The ERR figures are internally consistent, and the 0% leakage deduction is reasonable for a biogas capture project, though the original PDD did not address leakage at all.

Project Description

Red Flags

• ⚠Four contradictions between the PDD (2021) and validation report (2023) on baseline type, additionality test, leakage treatment, and crediting period length — the PDD originally proposed a 21-year crediting period (2022–2043) while the registered period is only 7 years (2023–2030)
• ⚠Free, Prior and Informed Consent (FPIC) was not conducted, despite the project treating community wastewater in Dak Lak province
• ⚠Minimum extraction confidence is rated low, and one of the eight source documents is of unknown type, reducing reliability of the extracted record
• ⚠Eight Corrective Action Requests were raised during validation (all closed), indicating the initial submission had notable gaps

Credit Vintages

No issuances recorded on the registry.