INTERRA Selected As Finalist To Receive The 2018 Illinois Sustainability Award
IRTBA Announces INTERRA President To Serve On Green Council Board Of Directors
INTERRA AWARDED IDOT PTB 187, ITEM 4 PROJECT
Chicago O’Hare Airport, Terminal 6 Project: “We would like to extend our appreciation to you and all of your employees who worked on the Terminal 6 Project. All work was performed professionally, accurately and thoroughly. Your commitment to quality and …
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.