Integrating hydrogeology and geomechanics, this study determines the favourability of disposing wastewater into the Belloy and Debolt formations in the Montney fairway in NEBC. Reservoir characterization of both zones includes pressure vs elevation graphs, head, pressure depth gradient, salinity and theoretical pressure at formation top maps. Added value is found in a review of drilling experience in the two zones in addition to analysis of the geomechanical setting, rock properties, modelling and characterization of stress, faults and natural fracturing.