If inquire officials of the Ministry of Public Health what is the basis for the Ministry to determine the "acceptable daily intake" (ADI) of glyphosate"?

The WTO's only report so far on glyphosate, i. e. the 1994 "Glyphosate - Environmental Health Criteria 159" report, appears to have such a character!

With continuously upwards changing glyphosate tolerance levels, the final body load of glyphosate from daily food intake will be anybody's guess. It will increase progressively over time.