Project Serra da Mantiqueira

Audit Analysis

Project Serra da Mantiqueira is an enhanced weathering carbon removal project verified by 350Solutions under the Isometric standard. The VVB demonstrated rigor by excluding 44% of the application area and reducing the verified removal figure from 235.53 to 153.89 t CO2e, and the 1,000-year permanence claim is underpinned by ocean bicarbonate chemistry with no known reversal mechanism. However, the absence of a stated buffer pool, a project-specific baseline without a reassessment schedule, a 0% leakage deduction justified only as 'deemed negligible,' and the non-conduct of FPIC create meaningful gaps in the project's robustness.

Project Description

Red Flags

• ⚠No buffer pool or permanence risk mechanism is stated despite a 1,000-year permanence claim
• ⚠FPIC was not conducted with affected communities despite the project being deployed on agricultural land
• ⚠Leakage deduction of 0% is justified only as 'deemed negligible' without a quantitative assessment, which is thin for an agricultural deployment
• ⚠44% of the original application area was excluded from the CDR claim due to non-resolvable post-weathering signals, indicating significant measurement uncertainty in the methodology
• ⚠Project-specific baseline with no stated reassessment timing or schedule

Credit Vintages

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