Method and rigour
Check how they design soil carbon sampling: stratification by soil type, bulk density correction, depth increments, lab methods (LOI versus dry combustion), and which MRV protocol governed the plan.
Evidence to listen for
- Follows and can justify an established methodology
- Understands contamination, bias, and chain of custody as they apply to the field
- Knows the limits of their techniques and says so
- Documents procedure so results are reproducible and defensible
Five-point scoring guide
Careless method; unaware of contamination, bias, or procedural integrity.
Knows procedures but applies them inconsistently; gaps in documentation.
Sound standard practice; less certain outside familiar techniques.
Rigorous and well documented; understands the limits of each method.
Names stratification logic, composite versus discrete cores, bulk density handling, and cites protocol requirements such as VM0042 or Climate Action Reserve.