The Society of American Military Engineers (SAME) Denver Post and Philadelphia Post along with the US Environmental Protection Agency (EPA) are hosting a series of webinars based on talks given at recent Design and Construction Issues at Hazardous Waste Sites (DCHWS) Symposiums. The mission of the DCHWS symposiums is to facilitate an interactive engagement between professionals from government and the private sector related to relevant and topical issues affecting applications of engineering and science associated with cleaning up hazardous waste sites. The symposiums also serve as a platform to facilitate the exchange of information, encourage dialogue, share experiences, and build and enhance communication among design and construction professionals.
Fractures have enabled or enhanced remediation of soil, groundwater, and bedrock for decades. Advanced hydraulic fracturing methods can predictably deliver remediation amendments to low-permeability formations where amendment delivery via Darcy Flow is unreliable or ineffective. Here we present multiple case studies demonstrating the successful application of hydraulic fracturing to deliver remediation amendments to low permeability sites impacted with chlorinated solvents, which would otherwise require more expensive remedial approaches. These case studies include a range of in situ remediation approaches, with emphasis on chemical oxidation and chemical reduction. Implementation costs and performance monitoring results will be presented to demonstrate the potential for hydraulic fracturing to limit project costs and drive remediation outcomes during treatment of these challenging sites. To view this archive online or download the slides associated with this seminar, please visit http://www.clu-in.org/conf/tio/DCHWS18_071421/