13. (15) Where it is established that actual wildlife harvest loss or future harvest loss was caused by development , the liability of the developer shall be absolute and he shall be liable without proof of fault or negligence for compensation to the Inuvialuit and for the cost of mitigative and remedial measures as follows:

(a) where the loss was caused by one developer , that developer shall be liable;

(b) where the loss was caused by more than one developer , those developer s shall be jointly and severally liable; and