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Case Studies

Site Closure using Combined Remedies including KB-1® Bioaugmentation

Project Highlights

  • Bioremediation following steam injection decreased TCE concentrations to less than 2 µg/L in all source area wells
  • Biobarrier successful in preventing TCE mass from migrating off-site
  • Site Closure achieved

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KB-1® | KB-1® Bioaugmentation Using Hydraulic Fracturing at a Low Permeability TCE Site

Project Highlights

  • Effective bioremediation remedy implemented in a low permeability unit
  • TCE MCLs reached in half the expected time-frame
  • Remedy-In-Place designation by Wyoming DEQ and EPA within 2 years
  • Project won Assoc. of Consulting and Engineering Companies, Engineering Excellence Award for Colorado with submission "Empowering Nature, Delivering Results"

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Treatability Studies | Technology Evaluation Bench-Scale Treatability Testing for a 1,1,1-TCA/TCE Site

Project Highlights

  • The study results were used by the client to select the most appropriate remedy for field implementation
  • Study demonstrated that KB-1® Plus bioaugmentation promoted 1,1,1-TCA dechlorination and TCE dechlorination to ethene
  • Study demonstrated that alkaline-activated persulfate promoted the complete destruction of TCE and partial destruction of 1,1,1-TCA

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KB-1® | Full Scale KB-1® Biobarrier for TCE Plume Containment

Project Highlights

  • Implementation of a 1,250 foot wide KB-1® bioaugmented barrier
  • Treatment of VOCs under high groundwater velocity conditions
  • Conversion of high TCE concentrations to non-toxic ethene

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KB-1® | Full Scale KB-1® Bioaugmentation for TCE DNAPL Source Area Treatment

Project Highlights

  • DNAPL-associated TCE concentrations decreased below federal MCLs within 6 months
  • 98% of estimated TCE mass was removed within 6 months
  • Enhanced TCE DNAPL dissolution observed

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