T2 Utility Engineers (T2ue) completed a GPR investigation in the project area for AECOM Canada. The primary focus was to determine the location and depths of utility crossings without the excavation of test holes.
The project area is along the Stouffville Rail Corridor from St. Clair Ave East Bridge to 14th Avenue. Selected locations with utility crossings were investigated.
T2ue completed Phase I of the field investigation in May 2015, and Phase II in August 2015. The investigations were successful in verifying the alignment and depth of the underground utilities within the project area, however many of the verifications were done using EM, inverts and chamber depths, as GPR proved to have limited effectiveness.