We are pleased to announce the “Tools and Equipment Necessary for Successful Bedrock Remediation” webinar based on a recent presentation at the NGWA Conference on Fractured Rock and Groundwater.
The synergy of proper characterization and effective remediation using the Trap and Treat® technologies has resulted in achieving site-specific clean-up standards and/or full site closure for five sites within the past 3 years.
Borehole geophysics were applied using optical or acoustical imaging, fluid temperature, fluid conductivity, and caliper logs to identify zones of transmissivity and potential contaminant migration. A custom designed straddle packer was used to acquire discrete samples to determine the vertical distribution of the contaminant mass. It is with knowledge of the vertical chemistry changes that a properly designed injection plan could be devised to place the right amount of treatment at depths of known contaminant mass and concentration, thus reducing the risk of either underdosing or overdosing. Treatment injections were performed using another custom short-interval straddle packer. The packers allowed for the surgical placement of the proper volume and density of the treatment slurry to match the contaminant concentration at a given depth. Injections were performed using a custom injection system with a maximum injection pressure of 2,000 psi and an injection flow rate range of 8 to 300 gpm. The injection rates and pressures were tailored to the formation lithology to achieve maximum distribution and delivery of the treatment.
All five sites that were closed achieved non-detect levels of the contaminants of concern. The equipment referenced above will be presented and described in detail.
Please register for Tools and Equipment Necessary for Successful Bedrock Remediation on Nov 7, 2017 10:00 AM MST at: