• The E-Quest Corporation is a NEHA listed radon testing laboratory, (Certification No. 101090 AL1)
  • State of Colorado Certified Asbestos Consulting Firm (No. ACF-14783)
  • State of Colorado Petroleum Storage Tank Committee Consultant Registration (No. C-153)
  • Hallman is a Colorado Registered Professional Engineer, (No. 18023)
  • Colorado AHERA Certified Asbestos Inspector and Management Planner (No. 4288)
  • NEHA Listed Radon Measurement Provider (No. 100136 RT)
  • State of Colorado Petroleum Storage Tank Committee Individual Registration (No. 5259).
  • Mr. Hallman holds a Masters Degree in Mechanical Engineering from Colorado State University.
  • E-Quest contracts with licensed geologists and registered environmental professionals.

Professional Memberships

  • American Society of Testing and Materials (ASTM), committee E-50 on environmental assessments (since 1989)
  • Colorado Hazardous Waste Management Society (since 1989)
  • National Society of Professional Engineers (since 1989)


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