Maia C. Davis, Inc. Email: maiac.davis@gmail.com Phone: 530-559-1404  

Brandon Badeker

Engineering Geologist, County of El Dorado Phone: 530-621-5130 Email: b.badeker@gmail.com

Clyde Hebbron

Sonde Geological Services Website: https://sondegeo.com/ Phone:  (530) 677-3055

David Sederquist

Youngdahl Consulting Group, Inc. Email: dcs@youngdahl.net Website: http://www.youngdahl.net/ Phone: 916-933-0633  

William T. Mitchell

Wheeldon Geology Email: wheeldongeology@gmail.com Phone: 530-621-4482