Teichert minng prepares to dig deeper | SierraSun.com

Teichert minng prepares to dig deeper

Christina Nelson

After recently choosing a consultant, Truckee will begin to evaluate an application that will allow the Teichert Aggregates Martis Valley mine to begin digging deeper for its mineral extraction operation.

Answering questions about possible environmental impacts at the Jan. 2 Truckee Town Council meeting, Teichert project manager Jeff Thatcher assured the council that certain environmental impacts were addressed in the first environmental impact report prepared before the mine began its operations.

“We will not disturb anything that hasn’t already been disturbed,” Thatcher said.

If approved, Teichert would be allowed to run a wet mining operation, and would be authorized to go to a depth of no more than 40 feet below the groundwater table.

The current Nevada County Planning Commission conditions require that the mine not dig deeper than two feet above the average groundwater level.

The project would not increase the surface area of the mine, and would actually reduce problems with dust, Thatcher said.

Using a backfill technique, the mine would refill the portions of land that have already been mined to keep open water at a minimum.

Thatcher said the practice will keep the mine from needing to discharge the water, which can cause more environmental impacts than wet mining.

At the Jan. 2 meeting, the town council approved a contract with Greystone Environmental Consultants to prepare an environmental impact report.

The mine currently operates under a conditional use permit that needs to be re-approved by the planning commission every five years.