CDR Verification Framework Documentation
Docs: Component
Leakage
Uncertainty
For terrestrial geologic storage, leakage can be directly monitored during and after the injection period, though this is more challenging for subseafloor reservoirs. If geologic storage results in a functionally stable form on a short timescale — for example, via subsurface mineralization — fugitive emissions associated with the full lifetime of storage may be estimated based on direct observations of the storage reservoir. If instead the integrity of geologic storage requires ongoing monitoring and maintenance — for example with the injection of supercritical CO₂ — the potential for future fugitive emissions must be modeled. For alternative storage systems, like mineralization in concrete, it is possible to directly measure the conversion of input CO₂ into a functionally stable form and therefore the total leakage from the storage system.
Applicable pathways
Pathway
VCL
Biomass Carbon Removal and Storage
3-5
Revision history

Apr 10 2023
Modifying component to include both leakage from the injection process, and potential future leakage. Updating upper uncertainty bound from low to medium to reflect this change.

Sep 19 2022
First release.
Leakage
Uncertainty
For terrestrial geologic storage, leakage can be directly monitored during and after the injection period, though this is more challenging for subseafloor reservoirs. If geologic storage results in a functionally stable form on a short timescale — for example, via subsurface mineralization — fugitive emissions associated with the full lifetime of storage may be estimated based on direct observations of the storage reservoir. If instead the integrity of geologic storage requires ongoing monitoring and maintenance — for example with the injection of supercritical CO₂ — the potential for future fugitive emissions must be modeled. For alternative storage systems, like mineralization in concrete, it is possible to directly measure the conversion of input CO₂ into a functionally stable form and therefore the total leakage from the storage system.
Revision history

Apr 10 2023
Modifying component to include both leakage from the injection process, and potential future leakage. Updating upper uncertainty bound from low to medium to reflect this change.

Sep 19 2022
First release.