​R. Mark Workman, RCE 68557

  • ​​President/Principal Engineer
  • (805) 302-9381
  • markw@workmangeotechnical.com

Mikey Espinosa​

  • ​​Soils Technician

Our Team


Tristan Brenner

  • ​Laboratory Technician

Matt Cahill

  • Senior Field Technician
  • (805) 302-6486

Jake Reeves

  • ​Soils Technician

Travis J Volaski, EIT 152525

  • ​Staff Engineer
  • ​(805) 836-9288
  • travisv@workmangeotechnical.com

​John C. Rubenacker, CEG 2200

  • ​Engineering Geologist/Consultant

Joe E. Reeves, ACI Certified

  • ​Senior Technical/Supervisor
  • (805) 836-9286
  • joer@workmangeotechnical.com