Tel:  (520)573-2045
Fax: (520)573-0528

Managing Partner:
John Silvia, S.E.T.

Materials Testing/Laboratory Services:
John Christensen, E.T.

Geotechnical:
Clyde Pretti, P.E.

Environmental:
Gerry Yarab, R.G.

Accounting:
Kathryn Chwalek

Laboratory

Accreditations