Legacy Remediation recently completed a smooth and successful groundwater remediation project at a DOD facility using Enhanced Reductive Dechlorination (ERD) along with In Situ Chemical Reduction (ISCR).
The ERD & ISCR Injection selected remediation chemistries included Emulsified Lecithin Substrate (ELS), 10-micron Zero-Valent Iron (ZVI), and BAC-9 Microbial Culture, all provided by Evonik.
The ELS (Emulsified Lecithin Substrate) was delivered in 55-gallon drums, and stored within our Support Truck.
The 10-micron Zero-Valent Iron (ZVI) powder was delivered in 50-pound boxes.
It was carefully measured prior to adding it to our Mix Tank batch mixture.
Due to base requirements, an air gap was utilized when filling our water storage tanks from the nearby fire hydrant.
All of our mix water was made anaerobic in alternating batches in our 1,000-gallon storage tanks. Newman Zone OS was used to remove dissolved oxygen and create reducing conditions. The dissolved oxygen level was verified using a water quality meter.
The amendments mixture was injected into existing 4-inch Injection Wells.
Due to the poor placement of some of the well casings within the well boxes, we had to utilize a pneumatic packer for some of the Wells.
We injected into 3 Injection Wells simultaneously through our 10-point Injection Manifold.
The BAC-9 Microbial Culture dose was measured and injected in line for each respective Injection Well.
Legacy Remediation values include safety, quality, and service, all of which were reflected at this injection site. The Legacy Team strives to meet these standards every time they step foot on site. Always proud of our crew executing jobs with professionalism and attention to detail.
If you have any questions on this project, or if we can help support any of your current or upcoming projects, please contact us.
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