Environmental, Resource, and

Sustainability Consulting and Contracting

Since 1990

Clearwater Group 1990-2017 Copyright

​​​​​Clearwater Group

East Bay Office: (Main Office)
229 Tewksbury Avenue
Point Richmond, CA 94801 USA

North Bay Office:

777 Grand Avenue; Suite 205

San Rafael, CA 94901 USA


Main Number: +1.510-307-9943

Fax: 510-232-2823

Olivia P. Jacobs

Mobile:     +1.510-590-1099

James A. Jacobs

Mobile: +1.510-590-1098 


Clearwater Group has evaluated mine properties for resource potential, tax value for estate purposes, as well as for environmental issues.  The firm has performed valuations of property with gold and silver resources as well as coal properties.  The company has worked on mitigation measures to minimize acid mine drainage potential of sulfur-rich deposits.

Principal Geologist James A. Jacobs co-authored Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils (2014, Wiley).

The author is shown at the Richmond Portal of Iron Mountain Mine, a U.S. EPA Superfund Site with a documented -3.6 pH. Photos below show Iron Mountain Mine, with passive mitigation measures to treat acid mine drainage in the eastern U.S.

Water treatment at Iron Mountain Mine relies on lime treatment as well as stormwater diversion.

Passive constructed wetlands have been used for acid mine drainage treatment.

Cold mix asphalt (CMA) can also be used to incorporate mining wastes into a recycled product.