Jim Studer, Technical Consultant, InfraSUR LLC

BiRD in situ chemical reduction is now a trusted method for treating difficult groundwater contamination. This approach uses both biotic and abiotic reactions. These reactions create ferrous monosulfides, which are very reactive and break down tough contaminants. BiRD works well on chlorinated solvents, but it also treats perchlorate, nitrate, and other halogenated compounds. In addition, it helps stabilize certain metals and metalloids that react with sulfides. Because of this wide range, engineers often compare BiRD to other treatment options. These include bioremediation, ISCO, natural attenuation, and similar ISCR methods. BiRD works alongside these methods when a combined remedy is best. So far, teams have used it at Superfund sites, military bases, factories, and local businesses. Notably, several of these projects are in the Denver Basin.

During this talk, InfraSUR will share what they’ve learned from using BiRD in both labs and real field sites. First, they will explain how to tell when BiRD in situ chemical reduction is the right choice. Then, they will show how site conditions—like soil, groundwater speed, and contaminant type—affect design and results. Next, they will walk through common steps for setting up a BiRD project. These include choosing the right materials, setting up injection tools, and checking the site during and after treatment. They will also talk about how to use high-resolution site data to build strong site models. This helps improve both planning and long-term outcomes.

Finally, InfraSUR will talk about performance and cost. They will share data from past projects that show how fast and how well BiRD works. Some sites showed big drops in contamination in just a few months. Over time, BiRD keeps working with very little energy input. The team will also compare costs with other methods like pump-and-treat or ISCO. In many cases, BiRD costs less and takes less time. By the end, attendees will understand how to apply BiRD effectively and with confidence.
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