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PURremovalUnited StatesVintage 2023General Methodologyv2.1

Oregon Biochar Solutions

PUR-753518 ↗

#23of 61 in Biochar#207of 345 in United States#50of 111 in Puro.earth (PUR)

4.8/ 10
Integrity
4.3
Transparency
5.5
Claim Safety
4.5
Documentation
5.5

Audit Analysis

Oregon Biochar Solutions is a Puro-registered biochar removal project with a named VVB and a recent verification report, but it carries several material concerns: over-calculation of credits identified in the verification report, a very low 2.5% buffer pool, storage that was not independently verified, a significant permanence-claim contradiction (100 vs 1,000 years), and no quantified leakage treatment. The project's additionality rests on a combined test that was not explicitly confirmed by the VVB, and the baseline is project-specific with no reassessment date on record.

Red Flags

  • Verification report identifies over-calculation of 75 CORCs (transportation/sales data) and 22 CORCs (natural gas invoices, listed twice), totalling 119 excess credits, with five corrective actions still required.
  • Permanence claim contradicts itself across documents: the PDD (2023) states 100 years while the issuance record (2021) states 1,000 years, yet the buffer pool is only 2.5% and storage was not independently verified.
  • No leakage deduction or justification is stated in any available document, despite biochar end-use displacement being a plausible leakage pathway.
  • Additionality test type is recorded as 'combined' but explicit VVB confirmation of the additionality assessment is not found in the extracted record.

Credit Vintages Exhausted

IssuedRetiredAvailable
2021
4,3234,3230
2022
1,6021,6020
2023
5,2095,2090
2024
3,6913,6910
2025
6,9266,9260
Total21,75121,7510

Risk Indicators

Additionality

Combined test present but VVB confirmation not explicitly stated

Permanence

2.5% buffer, storage not independently verified, permanence claim contradicted

Leakage

No deduction or justification stated in any document

Baseline

Project-specific baseline, no reassessment date on record

Safeguards

Safeguards mentioned but FPIC and grievance mechanism not confirmed

Double-claim

CORSIA and CCP status not stated in available documents

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Analysis ProvenanceScored2026-09-03General Methodology v2.1

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