Case Studies
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"
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
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
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
KB-1® Plus | 1,1,1-TCA/TCE Remediation Using KB-1® Plus
Project Highlights
- Effective bioremediation of a comingled 1,1,1-TCA/TCE plume
- All chlorinated VOCs were below or near ROD specified limits within 18 months
- KB-1® Plus and electron donor applied in a single mobilization into an aerobic aquifer using anaerobic chase water
- Successful pilot study led to two full scale KB-1® Plus bioaugmentation implementations at the Site