The overarching goal of this work is to explore how programmatic constraints may affect estimates of biofuel CIs for emerging feedstock-to-fuel pathways and to highlight the potential benefits of implementing field-specific LCAs of biofuels. To illustrate the importance of sound policy provisions and highlight the potential utility of field-to-fuel GHG monitoring technology, the carbon intensity of SAF produced from miscanthus via the alcohol-to-jet (ATJ) pathway was calculated according to specifications from three low carbon fuel policies (the RFS, CFR, and LCFS) and the 45Z tax credit and compared against spatially explicit modeling results tailored to the feedstock-to-fuel pathway. The CI for the spatially explicit analysis was compared to policyspecific CIs to illustrate how policy guidelines and current flexibility affect fuel characterization for this potential pathway. In addition to more accurately representing true environmental outcomes of biofuel production, policies that enable field-specific CI calculations could better incentivize compliance and impactful carbon mitigation measures by producers.