Quality, Service & Commitment


  • 08 May 2018

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

  • 28 Apr 2018


  • 08 Dec 2017

    INTERRA Honored With 2017 IRTBA Green Industry Achievement Award For Green Initiatives

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Laboratory Certifications

  • IL & WI State DOTs
  • ASTM


Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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With this letter we provide our confidence in INTERRA in providing comprehensive field and laboratory testing for projects involving soils investigations, design and construction monitoring … Their services are consistently ontime and within budget…

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Indiana Harbor And Canal Confined Disposal Facility (CDF), East Chicago, IN

Project Summary

The Indiana Harbor & Canal Confined Disposal Facility (CDF) will become the future storage site of contaminated dredged material, capped with water, as part of the US Army Corps of Engineers (USACE) efforts to clean the adjacent waterways.

Interra provided borrow site investigation including geotechnical and environmental testing, quality control testing for soils, cast-in-place concrete and steel.  The dike encompassing the CDF is constructed of clay material meeting strict permeability standards, governed by the RCRA, IDEM, and EPA in conjunction with the US Army Corps on Engineers, to ensure that the outside environment is undisturbed by the dredged material. With nearly 200,000 CY of clay, Rausch constructed over 1300 LF of clay dike at the site exterior to close off the disposal area as well as 2900 LF of an interior dike dividing the site into two disposal cells.

This project was constructed on the former Sinclair refinery site, and contaminated soils, underground structures, and fuel storage tanks requiring adherence to strict hazardous site quality and safety standards.