Burma Road Borrow Pit 2 soil investigation.

A Soils investigation was performed on the Burma Road Borrow Pit II area. The investigation was targeted at finding structural fill material. Structural fill material is sandy grained material which has a fines content of less that 15 percent. The material will be needed initially for the construction of the Glass Waste Storage Facility 2. Various sampling techniques and tests were performed to determine the material found at BR2. A total of 13 locations were selected throughout the area to obtain material data. Cone penetrometer (CPTu) soundings, direct push samples, wire-line samples, and hand augers were done at various locations to determine the material content of BR2. Tests were done to average depths of 15 to 30 feet, depending on topography.

Soil samples were taken from seven of the locations for further testing in the soil lab. A total of 75 tests were done to quantify the material properties of BR2. Maps, cross-sections, and 3-D models were created to aid in analysis. Volumetric models and estimates were also created to analyze the amount of material available. After lab testing and data analysis was complete, it was determined that the BR2 area was a possible structural fill candidate. The area was also determined to contain common fill, sandy material with a fines content of less than twenty-five percent. It also may contain material suitable for meeting low permeability requirements. Based on volumetric estimates a possible total of around 550,800 cubic yards of structural fill material, and around 328,300 cubic yards of common fill and low permeability material could be available.