Water is a resource of significant importance to the environment, our mines, our local communities and Aboriginal people. New Gold understands the importance of responsible water use. Our objective at every New Gold operation is to apply efficient designs and technologies to minimize water use through reuse and recycling wherever possible.
Almost all of the water used at our sites is associated with the processing of ore. We also require water for drilling and for dust control on mine haul roads, and use dust suppressants to minimize evaporative loss. All process water used at our mine sites is contained in a closed circuit, with only evaporation at tailings storage facilities or leach pads and entrainment in tailings and concentrates allowing water to leave the cycle of reuse. Our operating mines are zero discharge facilities, with no process water being released to the surrounding environment.
We make significant efforts to minimize water consumption. At Peak Mines, we use water-efficient “thickened tailings” – a method known for using less water than traditional lower density tailings deposition. At Mesquite and Cerro San Pedro, the process solution is recycled and reused on the heap leach pads. At New Afton and Peak Mines, water is recycled through the tailings facility and reused in processing.
Our operating mines are located in arid or semi-arid regions. We source water from groundwater wells or pipe water over long distances, with the exception of New Afton, which sources water from Kamloops Lake. All sites source and use water in compliance with the appropriate regulatory requirements; this provides safeguards so that other neighbouring water users are not negatively impacted. Our monitoring programs are designed to detect any changes in surface and groundwater and we vigilantly investigate variances in water quality that may be due to our operations.
In 2015, we implemented our Water Stewardship Standard based on the Alliance for Water Stewardship (AWS) Standard. The AWS Standard is a global standard that outlines what is expected of companies seeking to adopt responsible water stewardship practices. Part of the standard requires sites to adopt monitoring programs and guidelines appropriate to their regulatory context. This is annually audited and provides assurance that each site is measuring impacts against the appropriate guidelines. Our Water Stewardship Standard also requires a detailed water balance to be formulated by our sites. By working to understand where water is lost in our processes and on our sites, we can put our efforts into reducing these losses and improving our efficiency and recycling efforts. All sites completed an action plan based on a gap analysis against the New Gold Water Stewardship Standard and are working towards A-Level for all indicators.
Raw Water Consumption – Across Operations1 (million m3)
Includes all water extracted from surface, groundwater and water utilities at our operating mines only, for all purposes, including dust control and cleaning. Includes approximately 2.5 million m3 of surface water (37%), 3.6 million m3 of groundwater (54%) and 0.5 million m3 from water utilities (9%). Does not include rainwater or potable water provided at sites. Water consumption by site is available in the Appendix.
Raw Water1/Ore Processed Ratio2
Raw water does not include rainwater or potable water provided at sites. Includes operations only.2.
Ore processed was 28,699,000 tonnes in 2016. Includes ore mined and placed on leach pad at Cerro San Pedro and Mesquite, and ore processed at New Afton and Peak.