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PURBiochar, 2022AustraliaGeneral Methodologyv2.0

Carbonchip Mobile Carboniser #1

PUR-291133 ↗

#24of 44 in Biochar#6of 10 in Australia#49of 109 in Puro.earth (PUR)

4.6/ 10
Integrity
4.0
Transparency
5.0
Claim Safety
4.5
Documentation
5.5

Audit Analysis

The Carbonchip Mobile Carboniser project is a Puro-registered biochar project in Australia with VVB-confirmed additionality, but the verification report identifies six material findings including LCA calculation errors, a laboratory lacking specific biochar-matrix accreditation, and an emissions monitoring process that overestimates certain emissions. The absence of a stated buffer pool, leakage treatment, and FNRB methodology, combined with a project-specific baseline, leaves significant gaps in the integrity and claim-safety profile. Corrective actions are required before the project can be considered fully robust.

Red Flags

  • Six material findings in the verification report, including errors in LCA calculations and the additionality model due to misstated invoice data
  • The laboratory used for biochar elemental analysis is not NATA ISO 17025 accredited specifically for the biochar matrix, undermining the validity of biochar quality data
  • The verification report states the current emissions monitoring process overestimates certain emissions, raising over-crediting risk
  • No buffer pool percentage is stated in any available document, leaving permanence risk unaddressed
  • No leakage deduction or justification is found in the extracted record

Credit Vintages Exhausted

IssuedRetiredAvailable
2025
5795790
Total5795790

Risk Indicators

Additionality

VVB-confirmed but model errors found

Permanence

No buffer pool stated; biochar inherently stable

Leakage

Not addressed in available documents

Baseline

Project-specific; no reassessment stated

Safeguards

FPIC, grievance mechanism, safeguards documented

Double-claim

CORSIA and CCP status not stated

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Analysis ProvenanceScored2026-08-19General Methodology v2.0

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