Opposition to a proposed medical marijuana dispensary is ramping up in the San Geronimo Valley, with dozens of residents lobbying the local planning group and the school board to write critical letters to the county. As of this week, the Community Development Agency had received about 200 letters opposing the single active proposal for the valley, in Forest Knolls.
School trustees approved a letter of protest, though one trustee, Denise Santa Cruz Bohman, abstained, saying…