Bioaugmentation and Biostimulation Create Conditions for Successful Site Remediation

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Courtesy of REGENESIS

CASE SUMMARY

Dry Cleaning Operations, Coral Springs, FL

A subsurface chlorinated solvent plume formed as the result of dry cleaning operations and migrated beneath an onsite
structure. Over a 6-month period, the concentration of chlorinated solvents increased from 6,000 to 15,000 parts
per billion (ppb). A low-cost, in-situ remedial strategy was sought to treat the problematic and increasing chlorinated
solvent contamination. Despite little or no evidence of reductive dechlorination, an in-situ biological degradation
approach coupled with bioaugmentation was selected to accomplish the remediation goals. Hydrogen Release
Compound (HRC®) was selected as the electron donor and Bio-Dechlor Inoculum (BDI®) as the bioaugmentation
culture. The biostimulation/bioaugmentation treatment was designed to establish and sustain subsurface conditions
suitable for the chlorinated solvent degraders (BDI) to flourish and degrade the chlorinated compounds.

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