Civil Engineer Needed
INTERRA Honored With 2017 IRTBA Green Industry Achievement Award For Green Initiatives
INTERRA To Host Ribbon Cutting With Bolingbrook Mayor Celebrating Going Green
U.S. Route 34 at the Canadian National (CN) Railroad Bridge Construction: “Thanks very much for a job well done throughout this entire project. Congratulations to you and your staff!” David A. Cuthbertson, PE, Senior Project Manager, Alfred Benesch & Company
Construction Quality Assurance (CQA) Services, including:
√ Laboratory testing services
√ Field density testing
√ Construction monitoring
√ System evaluation
INTERRA provided comprehensive Construction Quality Assurance (CQA) Services to the North Shore Sanitary District during construction of its Zion Landfill in Zion, IL. Specifically, under a tight construction schedule, INTERRA provided laboratory services for the construction of approximately 4 acres of landfill cell, 4 acres of leachate holding pond, 10 acres of landfill final cover, and a pad pond. Field density testing of the clay liner and nondestructive testing of the synthetic liner was performed.
With significant coordination required during construction, INTERRA’s fast-track laboratory services included flexwall permeability, soil index, and proctor tests. Field services encompassed construction monitoring of the test pad, clay liner placement, synthetic placement, protective geotextile placement, drainage material placement, surveying, and pressure testing of leachate pipes. INTERRA was also retained to complete a system evaluation of leachate extraction and submersible pump station pumps.