Travis McGuire to Present on Remediation Performance and Costs at Texas Association of Environmental Professionals February Meeting

Travis McGuire will provide a presentation entitled “Data Mining 235 Chlorinated Solvent Sites to Evaluate Remediation Performance and Costs” at the Texas Association of Environmental Professionals’ February luncheon meeting, to be held on Thursday, February 15, 2018, at 12 pm.  Meeting details can be found here:

Presentation Abstract:  A massive data mining effort was undertaken to extract meaningful remediation performance and cost information from a large number of chlorinated solvent sites.  The study focused on in-situ groundwater treatment by the following technologies: enhanced bioremediation (n=117); chemical oxidation (n=70); thermal treatment (n=23); chemical reduction (n=21); surfactant flushing (n=4). Data from 45 monitored natural attenuation sites were also compiled. The methodology for assessing performance involved calculating geometric mean and maximum concentrations from before and after treatment. From these before and after treatment concentrations, the Order of Magnitude (OoM) reduction achieved by the remedial technology was calculated, providing a single performance metric for each site. Costs associated with remediation projects were extracted from the site information when available. The final database includes nearly 50,000 concentration data points from 711 wells at 235 sites.

The project has resulted in the most comprehensive dataset of remediation performance data ever compiled, filling a critical need identified by recent USEPA and National Research Council publications. Results indicate that remediation technologies typically achieved between 0.5 and 2 OoMs reduction in the geometric mean concentration of the parent compound. The reduction achieved drops to between 0.2 and 1.5 OoMs when maximum concentrations are considered. The unit cost for a typical project ranged between $100 and $200 per cubic yard, but with some projects below $10 and some over $1,000 per cubic yard.  Data will also be presented on the occurrence of rebound, sustained treatment, and sites that achieved MCLs.

For more information on this meeting or remediation performance and costs, please contact Travis McGuire at This email address is being protected from spambots. You need JavaScript enabled to view it. or call 713-522-6300.