Phase 2 initial borehole drilling and testing, Ignace area: WP4b data report - geomechanical testing of core for IG_BH03

The Initial Borehole Drilling and Testing project in the Wabigoon and Ignace Area, Ontario is part of Phase 2 Geoscientific Preliminary Field Investigations of the NWMO's Adaptive Phased Management (APM) Site Selection Phase. This project involves the drilling and testing of the first of three deep boreholes within the northern portion of the Revell batholith. The second drilled borehole, IG_BH03, is located a direct distance of approximately 21 km southeast of the Wabigoon Lake Ojibway Nation and a direct distance of 43 km northwest of the Town of Ignace. Access to the IG_BH03 drill site is via Highway 17 and primary logging roads, as shown on Figure 1. The project was carried out by a team led by Golder Associates Ltd. (Golder) on behalf of the NWMO. The overall program is described in the Initial Borehole Characterization Plan (Golder 2018). This report describes the testing methodology and results for Work Package 4B (WP4B): Geomechanical Testing of Core for IG_BH03, which includes Uniaxial Compressive Strength tests (w/ elastic constants), Indirect Tensile (Brazilian) Strength tests, P-wave and S-wave ultrasonic pulse velocity, acoustic emissions (AE) measurements (on UCS tests) and Thermal testing comprising Thermal Conductivity, Thermal Diffusivity, Volumetric Heat Capacity, and Thermal Expansion. Wet and dry density and water content were measured for all tested samples. (author)