Avoided-input credits for marine plastic, ghost-gear and agricultural-runoff prevention, quantified by mass of pollutant prevented from entering the marine environment with chain-of-custody verification.
Methodology overview
Recovery and prevention of lost/abandoned fishing gear. Credit basis per founder direction 2026-08-24 (position A, pending board ratification D6): Marine Conservation Units on a mass/area basis — kilograms of gear verifiably recovered or prevented, with hectares of seabed cleared reported separately. No carbon or climate claim forms part of the credit; avoided emissions may be documented as separately quantified informational disclosure only (umbrella methodology §11.12).
[FD-2026-08-24, sak D6: kredittgrunnlag posisjon A — MCC-MCU på masse/areal uten klimapåstand; 1 MCU = 100 kg verifisert masse; usikkerhetsbuffer 10 % til første verifikasjon. Styreratifisering utestående.]
Eligibility criteria
●Activity prevents pollutant entry to the marine environment — collection downstream of marine entry is excluded except for ghost gear in active fishing zones.
●Mass-balance accounting from source to interception point with documented chain of custody.
●Pollutant types limited to: macro / micro plastics, abandoned / lost fishing gear, and quantifiable agricultural nutrient runoff (N, P).
●Project activity is not legally mandated or already remunerated under EPR or polluter-pays schemes.
●End-of-life processing is verified — landfill or incineration without energy recovery does not qualify; accredited recycling or material recovery required.
●Permanence Option C: buffer pool drawdown to cover misclassification and double-count risk.
●Contribution-first claims; no neutralisation of any party's pollution footprint.
Quantification approach
Carbon pools and crediting metrics
●Avoided plastic-degradation methane / CO2 (very small, reported only)
●Avoided processing emissions (where recycled material displaces virgin production — verified, not assumed)
Equations (in plain language)
1.Prevented mass = (mass intercepted, kg) × (counterfactual escape probability) — counterfactual is regional and conservative.
2.Function gain = (prevented mass, kg) × (gear-class or polymer-class mortality / impact coefficient).
3.Avoided-emission side claim = (mass recycled, t) × (lifecycle delta vs virgin production, kg CO2e / t) where the recycler provides chain-of-custody documentation.
4.Double counting check: serialised manifest, GPS-tagged collection waypoints and intake-weighbridge records all required before issuance.
Reference methodology — starting point
Reference points include UNEA-resolved guidance on plastic pollution monitoring, the GESAMP marine litter assessment frameworks and FAO ghost-gear marking guidelines. These are starting references being improved upon — MCC F04 adds mandatory chain-of-custody and EPR-overlap testing.
Where MCC improves on the reference
✓Hard EPR / polluter-pays overlap test at PDD stage and re-tested annually.
✓Serialised, GPS-tagged manifest required from collection waypoint to recycler intake.
✓Counterfactual escape probabilities are regional, not global averages.
✓Function-equivalent claims (avoided mortality from plastic / ghost gear) are crediting unit; carbon side claim is reported but secondary.
Buffer pool
10%
Fixed by FD-2026-08-24 item D6 (1 MCU = 100 kg verified mass, 10% buffer).
Crediting period
5 years
5-year crediting period given regulatory environment evolution (EPR, plastics treaty). Re-application required — no automatic renewal.
Monitoring requirements
Required data sources
●Weighbridge intake records — every consignment, signed by accredited operator
●GPS-tagged collection waypoints — every collection event
●Drone or satellite verification of collection sites — quarterly
●Polymer / gear-class characterisation samples — every 1,000 kg or quarterly
●Recycler material-flow report — quarterly, with mass-balance reconciliation
Independent verification annually. Mass-balance discrepancy of more than 3% triggers immediate audit.
KPIs that must be tracked
Mass intercepted (kg) by classMass recycled / recovered (kg)Counterfactual escape probability (regional)Function-equivalent units (avoided mortality)Chain-of-custody integrity score (% complete manifests)Mass-balance variance (%)
Eligible co-benefits — SDG mapping
F-family F04 contributes to the following Sustainable Development Goals. Indicators flagged as required must be reported at every verification; optional indicators may be claimed where the project chooses to report them.
RequiredSDG 14Life Below Water
RequiredSDG 12Responsible Consumption
OptionalSDG 6Clean Water & Sanitation
OptionalSDG 11Sustainable Cities
OptionalSDG 8Decent Work & Growth
Public consultation and community engagement
30-day public consultation. Where collection involves informal-sector workers, a documented just-transition / decent-work plan is required and re-confirmed at every verification. EPR-overlap audit results are published with the consultation.
Adopted documents and version history
The binding text for this family is the adopted guidance published at /transparency/documents, together with the register entry above. Version history is carried by those documents, not by this page.
Projects using this methodology
Registry projects will appear here once registered