Remediation / Site Cleanup / Closure


controls photoFor sites with significant impacts to ground water, soil, and/or indoor air, remediation may be necessary. ECM specializes in cost-effective solutions that fit the problem and address the issues of concern. We believe that the approach, methods, timeframe, and costs need to match the site conditions. We recognize that each site is unique, with its own technical characterization and its own non-technical considerations. Non-technical factors can include cleanup funding, neighborhood perceptions, visibility issues, project duration, and oversight agency concerns.


We have experience with conventional methods, such as corrective action excavations, soil vapor extraction, and ground water pump and treat systems. We have also implemented less common cleanup technologies, such as bioventing and biosparging, UV oxidation, in-situ chemical oxidation, and ozone injection for polishing. We have designed and implemented a large phytoremediation cleanup project, using trees for uptakRemediation graphice and storage of contaminated ground water. The trees provide mitigation of the contaminant source in soil and ground water, and provide habitat for the Swanson’s Hawk, a local endangered species.


We have designed and managed cleanups for above- and below-ground storage tank sites, facility demolition and abandonment, bulk fuel facilities, tanneries, landfills, and airports. ECM staff have worked at DOD facilities and military bases, secure airport operations areas, and other restricted access sites.


This is the end goal of our work. Successful completion of site characterization, risk assessment and mitigation of potential issues will lead to agency case closure. We have closed dozens of cases, working with State and local agencies throughout northern California. Our toolkit for closure includes risk assessment, computer modeling, remediation and mitigation measures, deed restrictions and legal instruments, and negotiations with agencies and other involved parties.