Hello all - my question is in regards to my favorite area of wine production - Paso Robles, CA. There are many abandoned mercury mines in the Paso Robles area, especially in the Adelaida area where there are many vineyards. Is there a risk of mercury uptake in the growing of grapes? Is there any testing to see if this may be a problem? Nearby Lake Nacimiento had an issue with contaminated fish, so I am curious if this might also be a concern for grapes?