Isometric Project Cycle and MRV
Parent hub: Isometric Biochar Protocol
Permanence: Isometric Permanence Pathways 200y and 1000y
Modules: Isometric Modules Soil Built Burial
Generic: MRV Stack
Compare: Puro Project Cycle and MRV · Verra VM0044 Project Cycle and MRV
Primary sources: Biochar Production and Storage v1.3; Soil Environments v1.3.
End-to-end cycle
PDD (protocol + modules + ESS + additionality)
↓
Validation (Isometric-approved VVB; site visits)
↓
Produce → characterize (Method A/B) → store
↓
Reporting Period GHG Statement
↓
Verification (ex-post after durable storage)
↓
Credit issuance on Isometric Registry / Certify
↓
Transfer / retirement (± buffer contribution if applicable)
Critical rule: Credits issued only after CO₂ is durably stored — not at factory gate alone (protocol).
Documentation & validation
| Artifact | Role |
|---|---|
| PDD | Locations (biomass, pyrolysis, storage); feedstock counterfactual; reactor design diagrams; characterization plan; models; ESS |
| GHG Statement | Net removal quantification for Reporting Period |
| VVB | Validate feedstock module; verify storage module; verify quantification; ESS; Isometric Standard compliance |
| Materiality | 5% threshold (protocol) |
| Uncertainty | Sensitivity analysis; parameters <1% impact may be omitted from uncertainty analysis |
Site visits
Minimum: site visits during first Validation/Verification to biomass pyrolysis site and biochar application site (ISO 14064-3 framing). Representative sampling of multiple application sites allowed (protocol).
Batches and sampling
| Concept | Rule |
|---|---|
| Production batch | Project-defined but ≤ 1 month; consistent feedstock/process |
| Storage batch | One or multiple production batches blended before storage |
| Method A | Sample every batch (≥3 samples preferred) until statistical basis for Method B |
| Method B | After ≥ 30 samples (example: 3×10 batches), conservative mean − SEM for unsampled; refresh every ≤10 batches; 6-month sample eligibility window |
| Outliers (Method B) | Winsorize beyond ±3σ after ≥30 measurements |
Mass: preferred weighbridge at delivery; alternative documentation only with Isometric pre-approval. Retain carbon analyses and scale tickets ≥ 5 years after monitoring period.
Pyrolysis emissions MRV
Two quantification options (protocol §10):
- Direct continuous measurement of flow + composition (CH₄, N₂O, CO, CO₂) upstream of emission point — preferred
- Accredited periodic emissions testing (≥ annually) when continuous not feasible
Permissible gas end-uses: venting; venting after control system; combustion for process energy; provision to third party (allocation rules). N₂O concern elevated for low C/N feedstocks (manure, biosolids, seaweed) — justify if not monitoring.
Reactor design diagrams, materials, pressure-vessel standards (e.g., 2014/68/EU), and maintenance plans required in PDD.
Production variants: mobile / distributed / combustion co-product modules referenced in protocol §9.
End-use proof & chain of custody (soil)
From soil module §8:
Direct soil application
- Geotagged photos/videos: stockpile, spreading, incorporation
- GIS / maps of application boundaries + dated quantity logs
Mixing with organic matrices (crediting at mix + transfer)
- Biochar < 50% v/v of final product; product unsuitable as fuel
- Defined eligible end-use pathway
- Verified transfer of custody to third party
- Burden of proof that product goes to land (not incineration-dominant jurisdictions without soil proof)
Third-party sales
- Purchaser affidavit (intended use, geography for soil-T conservatism, evidence retention)
- Invoices / BOLs / delivery proof
- Mixing process evidence
CoC hygiene
- Unique batch IDs
- Documentation at every handoff
- Retain records ≥ 5 years
- Stockpile ≤ 12 months unless agreed; store wet/covered; keep away from waterways
Fuel-diversion risk: if material picking risk is non-negligible, ≥95% by weight ≤ 10 mm particle size (module).
Additionality dynamics
- Project-specific baseline/counterfactual per Isometric Standard
- Reassess when regulations or financials change (tipping fees, farmer payments, cheaper capital, co-product revenue)
- Finding of non-additionality stops future crediting only — does not claw back past/current periods (protocol)
Contrast Verra v1.2 VT0008 investment analysis + activity method (Verra VM0044 Project Cycle and MRV); Puro facility/output audits (Puro Project Cycle and MRV).
Data transparency
Evidence for quantification and ESS generally public on Isometric’s platform (PDD, GHG Statement, measurements, EFs, literature, permits). Limited confidential carve-outs (e.g., licensed EF databases) with buyer/registry/VVB access (protocol Data Sharing).
Buffer contributions (by module)
| Module | Typical buffer framing |
|---|---|
| Soil Environments | 0% (No Observable Risk; discount in (F_{durable})) |
| Low Oxygen Burial | 0% (same framing) |
| Built Environment | 2% (Very Low Risk) |
Confirm live project pages for actual buffer pool contributions (e.g., Charm registry counters).
Example projects (MRV archetypes)
| Archetype | Project | MRV flavor | Source |
|---|---|---|---|
| Soil / land application | Charm Range & Plains | Biochar trucked to land application sites | registry |
| Landfill burial | Carba Burnsville | Daily cover → low-oxygen burial; Microsoft offtake | registry; Carba |
US producer practical path
- Choose storage module early (soil vs burial vs built) — locks lab suite (Ro or not)
- Define production batch ≤ 1 month; write Method A→B sampling plan into PDD
- Contract ISO 17025 labs; if pursuing 1000y, secure petrography (≥500 R₀ points) + TGA
- Instrument pyrolysis emissions (continuous or accredited annual)
- Build geotag / GIS / affidavit CoC before first offtake season
- Allocate credit ownership contractually across feedstock, pyrolyzer, applicator
- Budget VVB site visits to both plant and fields/landfill
Ag adjacency: Soil and Agriculture · Application Rates and Methods · NRCS soil carbon amendment in US ag (policy, not Isometric MRV).