Subsurface Constructors More SERVICES RESOURCES CASE STUDIES ABOUT CONTACT CONTACT US Offices serving each region: Corporate HQ Office Northeast Region Office North Central Region Office Great Lakes Region Office Corporate Headquarters Contact: Lyle Simonton, PE – Director of Business Development 101 Angelica Street St. Louis, MO 63147 Toll free: 866-421-2460 Fax: 314-421-2479 Email: lsimonton@subsurfaceconstructors.com Northeast Region Contact: Kyle Plaza, PE – Region Manager 8919 New Falls Rd, Suite 15 Levittown, PA 19054 Phone: (609) 577-2724 Email: Kyle.plaza@subsurfaceconstructors.com North Central Region Contact: Gary Hahn, PE – Region Manager 120 Broadway Avenue South Suite #100 Wayzata, MN 55391 Phone: (612) 280-8940 Email: gary.hahn@subsurfaceconstructors.com Great Lakes Region Contact: Lyle Simonton, PE – Director of Business Development 1114 N. Court St. #146 Medina, OH 44256 Phone: (866) 421-2460 Email: lsimonton@subsurfaceconstructors.com For more information on ground improvement or other services, please provide the following information. First Name* Last Name* Email Address* Phone Number Company Name* Comments SERVING THE CONSTRUCTION INDUSTRY FOR MORE THAN 110 YEARS ADSC AGC ASCE DFI COPYRIGHT © 2021. ALL RIGHTS RESERVED. PRIVACY POLICY. ST. LOUIS: 866-421-2460 PHILADELPHIA: 609-577-2724 CLEVELAND: 866-421-2460 MINNEAPOLIS: 612-280-8940 Facebook LinkedIn Youtube Newsletter Signup

Subsurface Constructors More SERVICES RESOURCES CASE STUDIES ABOUT CONTACT WHERE WE’VE WORKED As one of the nation’s leading ground improvement and deep foundation contractors, we’ve delivered foundation construction projects from coast to coast for some of the biggest names in industry and construction. Project Location Project With Case Study SERVING THE CONSTRUCTION INDUSTRY FOR MORE THAN 110 YEARS ADSC AGC ASCE DFI COPYRIGHT © 2021. ALL RIGHTS RESERVED. PRIVACY POLICY. ST. LOUIS: 866-421-2460 PHILADELPHIA: 609-577-2724 CLEVELAND: 866-421-2460 MINNEAPOLIS: 612-280-8940 Facebook LinkedIn Youtube Newsletter Signup