Contact us Our hours of operation are Monday-Friday from 8:00AM to 5:00PM. Phone: 972-790-1910 Toll Free: 1-866-932-0935 Fax: 972-790-0967 Please select from the links below for general information: Geotechnical, Engineering or Environmental questions Concrete Material Testing & Inspection questions Sam Engineering & Testing, LP 1115 Luke St., Suite #100 | Irving, TX 75061 Phone: 972-790-1910  |  Email: