CDM has been honored with the 2009 Outstanding Ground Water Project Award in the Ground Water Remediation category from the National Ground Water Association (NGWA). The award recognizes the development of a unique groundwater cleanup solution using enhanced anaerobic bioremediation (EAB) for Rockwell Automation.
CDM and Rockwell collaborated on an effective remediation solution for groundwater contamination at a 9-acre site in Orlando, Florida, that previously housed a computer circuit board manufacturing facility. In conjunction with a unique groundwater recirculation technique, EAB using potassium lactate is addressing the problem of high-concentration, mixed chlorinated solvents that had leached into the groundwater prior to Rockwell’s acquisition of the site.
In addition to leveraging the power of naturally occurring bacteria, CDM designed an innovative well system—comprised of horizontal recovery and vertical injection wells—used to inject lactate and continuously recirculate groundwater, ensuring that lactate, bacteria, and contaminants are in constant contact. This approach creates an environment unmatched using typical injection techniques.
Within the first 6 months of full-scale operation, volatile organic compound (VOC) mass was reduced by more than 90 percent. According to March 2009 measurements, the estimated total VOC mass had been reduced from 2,897 pounds to 240 pounds. CDM is conducting ongoing site monitoring and the results indicate that the self-sustaining system continues to remediate groundwater contamination at an impressive rate.
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