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Abstract

Since its introduction at TRCR in 2024, Evaplant technology has advanced as a nature-based, zerodischarge solution for treating contact water using hybrid willow evapotranspiration. New feasibility studies in Quebec and across British Columbia have confirmed the applicability of Evaplant in diverse geoclimatic conditions. Feasibility studies in BC in particular span from the BC South Interior to the North-Central plateau, indicating broad viability. This paper presents a year’s worth of growth and evolution of the Evaplant system, from its description and introduction to TRCR attendees in 2024. Updated modeling for the BC Central Coast, Cariboo, and Omineca-Peace regions, incorporating climate and evapotranspiration factors, indicates suitability with similar or better water management rates than sites in Northern Quebec. It also details how willow biomass is being used for soil priming, peat moss replacement, and nursery input in reclamation supply chains. Preliminary cultural feedback from Indigenous collaborators has identified the willow as a culturally resonant, carbon-sequestering tree, reinforcing social license potential. The development model has been codified as a four-step process. The paper reviews new data, climate-based irrigation modeling, feasibility progression pathways, and emerging implementation models, all positioning Evaplant as a scalable solution for remote and active mine water challenges.