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Case Studies

KB-1® Bioaugmentation at a Toronto Area Dry Cleaner Site

Project Highlights

  • Effective bioremediation achieved in low permeability soils at a retail dry cleaner in the Greater Toronto Area (GTA).
  • cDCE stall corrected within 8 months of bioaugmentation, with no vinyl chloride accumulation.
  • Ontario regulatory standards (Table 3) were achieved for all chlorinated volatile organic compounds (cVOCs) approximately 1.5 years after KB-1® bioaugmentation.

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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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