Subsurface injection of remediation substrates is commonly performed with a direct push rig driving vertical injection points. While this method is common, it doesn’t provide a solution for the injection of substrate under obstructions such as roadways or building foundations. Following months of collaboration between Ellingson-DTD and Innovative Environmental Technologies, Inc. (IET), we have designed tooling and methodology for un-screened, direct injection of substrates utilizing horizontal directional drilling methods. Ellingson-DTD/IET crews drilled and injected substrate into 24 horizontal directionally drilled borings under active multi-lane roadways. The total footage was about 3,855’ for an average length of 161’ per bore. Once a boring was completed, the guidance tooling was removed and the direction injection tooling inserted. The injection tooling seals against the horizontal bore hole walls and substrate was injected under pressure into the injection zones. Approximately 1,000,000 pounds of modified permanganate solution for the purpose of mass removal and flux reduction were placed in the subsurface. #horizontalenvironmental #contamination #groundwater
very cool!
Congrats David. I’m excited to use this somewhere. Where can I see the tooling?
Remediation Engineer at Jacobs
6moFun project 😉