Leeds Production Facility
#6of 9 in United Kingdom#66of 111 in Puro.earth (PUR)
Audit Analysis
The O.C.O Leeds carbonated materials project has confirmed additionality and no reversal events, but is undermined by a 0% buffer pool, unaddressed leakage, and a long list of material findings including underreporting of feedstock and incorrect transportation calculations. The requirement for a marketing disclaimer on 'carbon negative' claims and a significant discrepancy between two verified ERR figures (2,852.6 vs 1,706) raise meaningful over-crediting and greenwashing concerns.
Red Flags
- Underreporting of Darring 0/4MM Sand delivery volumes identified as a material finding in the verification report
- Leakage explicitly not addressed and no leakage deduction stated in any available document
- Corrective action requires a disclaimer on all marketing materials stating credits are managed in Puro.Earth's registry — indicating prior 'carbon negative' claims lacked proper attribution
- Verified ERR of 2,852.6 tCO₂ (2026 report) vs 1,706 tCO₂ (2025 report) — a 67% discrepancy between two verification reports
Credit Vintages Exhausted
| Issued | Retired | Available | ||
|---|---|---|---|---|
| 2023 | 9,195 | 9,195 | 0 | |
| 2024 | 24,570 | 24,570 | 0 | |
| 2025 | 8,321 | 8,321 | 0 | |
| Total | 42,086 | 42,086 | 0 |
Risk Indicators
VVB-confirmed investment test
mixed evidence / unresolved risk
Not addressed, no deduction stated
Project-specific, reassessment timing not stated
Mentioned but no FPIC or grievance mechanism
Not CORSIA-eligible, CCP status not stated
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