Oak Ridge National Laboratory Oak Ridge, Tennessee Back to Project List Real Time Monitoring High mobility grout is placed at radioactive waste site. Project Overview: Layne GeoConstruction was contracted to perform in-situ high mobility grouting of Trenches 5 and 7 at the Oak Ridge National Laboratory. Trenches 5 (300-feet long by 15 feet deep) and 7 (200 feet long by 15 feet deep) were constructed in the 1960s for disposal of approximately 20 million gallons of liquid low-level radioactive waste. Layne GeoConstruction grouted the trenches filled with gravel and achieved a final hydraulic conductivity of 10-5 cm/sec and substantially reduced the overall water infiltration volume. High mobility grout was mixed on site using a fully-automated batch plant capable of producing up to 40 cy/hour. A total of 1,100 cy of balanced, stable multi-component grout was placed. CAGES computerized/wireless/grouting system was used for monitoring and recording of the grouting parameters.     Value of Work Performed: $660,000 Project Duration: 3 months Project Completion Date: March 2006 Project Reference: Grout Technology Specialists ECO Grouting Specialists Ltd. Alex Naudts, P.E. (519) 928-5949