Let me know if this issue has been brought up before. There appears to be a huge disconnect between how flows have been defined in many of the US LCI unit processes. There are many flows (I have mostly been looking at energy resource flows) that are not in the impact methods database. The result is that if, for example, the crude oil resource flow in the unit process is not in the CML impact assessment method, the impact method will report a ZERO value for depletion of fossil fuels. In fact, this happens a lot. This is very dangerous. I would guess that this is more related to VERY inconsistent data creation in the US LCI datasets. Nevertheless, it is a huge problem, rendering the use of impact assessment virtually useless for this database. I have seen the same thing for GWP100 numbers.
My quick fix has been to go through the inventory for a given system, and individually look for missing flows in the impact method, and enter them myself.
Are there plans for addressing this problem? Indeed, I teach two LCA related courses and could put some student-power to work on this issue, but would like thoughts from the community about how best to do this. My intuition is that the problem needs to be fixed by renaming flows in the US LCI database. But the issues may go both ways.
I really like OpenLCA and the idea of free, transport data such as US LCI. And I would love to help address these issues.