• John Youngdahl, P.E.
  President
  916.933.0633 Ext. 3006
  Contact
  
  
• Diana Alegria
  Human Resources
  916.933.0633 Ext. 3002
  Contact
  
  
• John Youngdahl, P.E.
  Geotechnical Department Head
  916.933.0633 Ext. 3006
  Contact
  
  
• Martha McDonnell, P.E.
  Materials Testing Department Head
  916.933.0633 Ext. 3005
  Contact
  
  
• Brian McCormick
  Laboratory Manager
  916.933.0633 Ext. 3011
  Contact
  
  
• Roy Kroll, C.E.G., R.E.A.
  Geoscience Department Head
  916.933.0633 Ext. 3007
  Contact
  
  
• Scott Youngdahl
  Graphics Department Head
  916.933.0633 Ext. 3039
  Contact

El Dorado Hills
1234 Glenhaven Court
El Dorado Hills, CA 95762
PH 916.933.0633
FX 916.933.6482

Roseville
502 Giuseppe Court, Suite 2
Roseville, CA 95678
PH 916.773.7633
FX 916.773.7833