they have already done radioactive water testing in the region. They put radioactive pills in the groundwater and it has traveled more than 20 miles....they have found that the whole groundwater system in the region travels back and forth for many miles....these studies were done while they were actively trying to get some traction moving Pebble Forward. the footprint of the mine and containment reservoirs removes 50 miles of salmon producing streams and a whole lake gets removed ( Frying Pan Lake ) healthy silver run here.