Interwaste Landfill gas Grouped Project
#68of 189 in Methane#14of 59 in South Africa#718of 1339 in Verra (VCS)#64of 159 in ACM0001
Audit Analysis
The Interwaste Landfill Gas project in South Africa is a registered VCS project with VVB-confirmed additionality and no reversal events, but it is weighed down by a long history of recurring MRV deficiencies (delayed calibrations, default flare efficiencies, documentation inconsistencies) and a baseline characterization contradiction between its verification and monitoring reports. The absence of a buffer pool, a project-specific baseline, and a thin leakage justification limit confidence in the integrity of the credit claims.
Red Flags
- Baseline characterization is contradictory: the 2019 verification report describes the baseline as 'measured' while the 2023 monitoring report describes it as 'modeled', raising data-reliability concerns about the baseline calculation.
- Recurring material findings across multiple verification cycles (2019, 2023) for delayed calibration of flow meters and thermocouples, use of default 80% flare efficiency instead of bi-annual measurements, and late installation of the electricity meter indicate persistent MRV quality weaknesses.
- Minimum extraction confidence is rated 'low', meaning at least one key document was poorly readable, reducing confidence in the completeness of the extracted record.
- CORSIA eligibility and CCP status are not stated in any available document, leaving dual-channel risk unassessed.
Credit Vintages
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2016 | 76,438 | 76,438 | 0 | |
| 2018 | 49,569 | 49,569 | 0 | |
| 2020 | 3,821 | 3,821 | 0 | |
| 2021 | 9,187 | 7,898 | 1,289 | |
| 2022 | 8,109 | 8,109 | 0 | |
| Total | 147,124 | 145,835 | 1,289 |
Risk Indicators
VVB-confirmed combined test
mixed evidence / unresolved risk
0% deduction, thin justification
Project-specific, measured vs modeled contradiction
Grievance mechanism present, FPIC not stated
CORSIA and CCP status not stated
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