Is your feature request related to a problem? Please describe:

Tissue or sediment based criteria may require a different unit for a characteristic/fraction/speciation combination which currently assumes the media is WATER. Currently, users cannot select a different unit for a given characteristic/fraction/speciation combination with media WATER vs. SEDIMENT vs. TISSUE.

Describe the solution you'd like:

TADA_ConvertResultUnits should allow for users/TADA team to OPTIONALLY include media when generating unique combinations in the reference table. The TADA team should also consider adding default units for specific, common combinations of characteristic/fraction/speciation/MEDIA that are different from the current defaults which assume media = WATER for each priority characteristic.

https://usepa.github.io/EPATADA/reference/TADA_ConvertResultUnits.html