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Bioaugmentation System Implementation to Remediate Chlorinated Solvents and 1,4-Dioxane

Posted January 23, 2020 By Ashley Csaszar

Penn E&R was contracted to perform and evaluate the in-situ biodegradation of chlorinated volatile organic compounds in ground water at a former manufacturing facility in southeastern Pennsylvania.  A pump-and-treat system and two-phase vapor extraction system were installed at the site in 1982 and 1999, respectively; however, Penn E&R has witnessed cutting-edge results since the implementation of a bioaugmentation/ biostimulation program in 2014.  This program has proven to be particularly innovative due to the use of emulsified vegetable oil (EVO) and nutrients (EOSĀ® Pro), Dehalococcoides mccartyi and enzymes BAC-9, and more recently the use of a specific bio-manufactured microbe, called Pseudonocardia dioxanivorans CB1190, to remediate chlorinated solvents and  1,4-Dioxane.

KEY PROJECT FEATURES:

  • Soil screening using a Membrane Interface Probe
  • Hydrogeologic investigation including pumping tests
  • Well installation and sampling for two contaminant plumes
  • Geochemical and biological parameter characterization sampling
  • Injection of EVO and nutrients (EOSĀ® Pro)
  • Bioaugmentation with Dehalococcoides mccartyi and BAC-9
  • Biostimulation with Pseudonocardia dioxanivorans CB1190
  • Project management
  • Data analysis and reporting
  • Report development

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