Corporate Office:

Colorado
12401 W. 49th Ave.
Wheat Ridge, CO 80033-1927
Phone: (303) 423-1212
Fax: (303) 423-6071

NDT Lead Contact:
Dennis Sack, P.E. 
Sr. VP & Principal Engineer
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Geophysics Lead Contact:
Phil Sirles
COO & Principal Geophysicist
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Contracting & Accounting Contact:
Evan Walston, CMA
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EMPLOYMENT OPPORTUNITIES

Northeast Region:

Virginia Office
3501 Woolman Dr.
Haymarket, VA 20169. USA
Phone: (571) 379-5334
Cell: (303) 883-2013
Fax:  (571) 379-5784

Office Manager & NDT Lead Contact:
Larry D. Olson, P.E.
President & Principal Engineer
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Metro Washington D.C. Office
7529 Standish Place
Suite 102
Rockville, MD 20855
Phone: (240) 477-7738b
Cell: (720) 271-9406
Fax: (240) 801-9951

Geophysics Lead Contact:
Austin Bistline
Project Geophysicist 
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