Quality, Service & Commitment

INTERRA NEWS

  • 19 Sep 2018

    INTERRA Selected As Finalist To Receive The 2018 Illinois Sustainability Award

  • 08 May 2018

    IRTBA Announces INTERRA President To Serve On Green Council Board Of Directors

  • 28 Apr 2018

    INTERRA AWARDED IDOT PTB 187, ITEM 4 PROJECT

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Certified

Laboratory Certifications

  • IL & WI State DOTs
  • ASTM
  • AASHTO
  • USACE

 

Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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Testimonials

LPV111, New Orleans East Back Levee, Louisiana: “Management was attentive to our needs, provided the advice needed to make cost effective decisions, and followed through with action in the field. ¬†This was a very high profile project with a one …

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NIPSCO R.M. Schahfer Landfill, Wheatfield, Indiana

INTERRA Services

Phase V

Construction Quality Assurance (CQA) Services were provided including related laboratory services for the construction of approximately 20 acres of landfill bottom liner. Work involved field density testing of the clay liner and nondestructive testing of the synthetic liner. Laboratory services include flexwall permeability, soil index and proctor tests.  Field services include construction monitoring during clay liner placement & synthetics placement.

Phase IV

Provided observation, field, laboratory testing and documentation during the construction of subgrade preparation, compacted soil liner installation, HDPE geomembrane liner installation, granular drainage layer installation, and protective soil layer installation.

Phase III Closure, Segment 2

Provided observation, field, laboratory testing and documentation during the construction of subgrade preparation, compacted soil liner installation, HDPE geomembrane liner installation, granular drainage layer installation, and protective soil layer installation