…as an academic argument, when mated to the appropriate engine, is the pump really moving water at the rate of 400 GPM?

There are currently three controlling agencies or entities over suction dredging in California—and you can make that four if the state legislature decides to further muddy the waters with additional legislation to block suction gold dredging in the state.

There are a few questions you will need to ask yourself before you apply for a suction dredge permit from the State Water Resources Control Board.

I have seen many samples taken originally with an eye toward getting the highest grades possible, but later someone claims that those results represent an average grade of the whole gravel deposit.