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ACRForest CarbonMAINE, USGeneral Methodologyv2.1

Anew - 100-Mile Wilderness Forestry Project

ACR-566 ↗

#22of 99 in REDD+#102of 345 in United States#41of 147 in American Carbon Registry (ACR)

5.6/ 10
Integrity
5.5
Transparency
6.0
Claim Safety
5.5
Documentation
5.5

Audit Analysis

The 100-Mile Wilderness IFM project in Maine demonstrates solid structural safeguards including a VVB-verified combined additionality test, a 40% quantified leakage deduction, and an 18% buffer pool. However, eight material findings—including a 0.15-acre overlap with a CARB-registered project, incorrect site-index equations, and shelterwood harvest triggers not implemented as described—raise meaningful concerns about baseline accuracy and operational compliance. The project over-delivered relative to its pro-rata expectation, but the project-specific modeled baseline and absence of FPIC limit confidence in the integrity of the claims.

Red Flags

  • 0.15 acres of project area overlap with CARB IFM project CAFR5304, creating a potential double-counting risk that required a corrective action to remove the overlap from boundary and RMZ files
  • Eight material findings in the verification report, including use of incorrect Lake States site-index curves instead of Northern Maine curves, shelterwood harvest triggers not always implemented as described in the GHG Plan, and discrepancies in acre values and decay-class definitions
  • Free, Prior, and Informed Consent (FPIC) was not conducted, and no grievance mechanism is documented in the available records
  • Reversal events are explicitly noted as 'not addressed' in the verification report, despite the 40-year permanence claim

Credit Vintages

IssuedRetiredAvailable
2020
30,50818,32312,185
2021
51,43029,66921,761
2022
21,16513,7267,439
Total103,10361,71841,385

Risk Indicators

Additionality

Combined test, VVB-verified

Permanence

Buffer pool present; reversal events not addressed

Leakage

40% quantified deduction

Baseline

Project-specific, modeled, no reassessment date

Safeguards

Safeguards mentioned; FPIC not conducted, no grievance mechanism

Double-claim

CORSIA/CCP status not stated; CARB overlap noted

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Analysis ProvenanceScored2026-09-12General Methodology v2.1

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