What is the range of damages for loss of future earning opportunity for a plaintiff who was sexually assaulted by a private security company?

In Blackwater v. Plint, supra, (paras. 93-96), McLachlin C.J.C., for the court, stated that an award of a "conventional" amount for loss of future earning opportunity was appropriate where the plaintiff was disabled from his occupation of logging for reasons other than the sexual assaults, and he lacked the "intellectual capacity to pursue vocational or retraining programs ‘save for the briefest and most practically oriented.'"