Water Management

We recognize the critical importance of water as a shared resource for our stakeholders as well as global society. This is because water scarcity and stress are key global challenges and mining companies can play a significant role in helping to solve them, both individually and collectively. As a result, we view water management and stewardship as one of our most important sustainability issues.

Our operations interact with water in a variety of ways. All of our operations use water as a key input in processing activities. Our Puna Operations requires pit dewatering and we manage water runoff from our surface waste rock facilities. The Seabee Gold Operation requires dewatering of underground workings. The Marigold mine and Puna Operations require water for dust suppression around pits and on haul roads.

At the Marigold mine, the primary source of water we use is from groundwater with no surface water consumption. At the Seabee Gold Operation, we use only surface water and do not consume groundwater. At Puna Operations, most of the water we use is drawn from local pumping wells.

We develop comprehensive water management plans as part of our environmental impact studies and assessments. The plans are tailored for each operation. As part of the plans, we maintain comprehensive water quality monitoring programs to help ensure that we meet all applicable regulatory requirements related to water. The plans include baseline water conditions and provisions for ongoing water sampling and testing.

Our site-level environment teams maintain primary responsibility for water management. The teams are responsible for implementing the water management plans and for meeting applicable regulatory requirements related to water.

We recycle water wherever possible. At all of our operations, we reuse water for processing.

We sometimes may need to discharge excess process water. Before doing so, we make sure water quality meets site- and applicable jurisdictional-specific discharge requirements. In 2018, there were no incidents of water discharge where water quality exceeded applicable regulatory requirements. The Marigold mine is a zero discharge site.

Throughout 2019, we will review the adoption of the MAC Water Management Protocol. We will also further develop mactive water balance models at all of our sites and conduct further watershed-level assessments.

The tables below present key metrics related to water on a consolidated and site-level basis.

Table 6. Water Metrics, Consolidated

Metric
Water consumption
Surface water (m3) 1,530,146
Groundwater (m3) 1,619,555
Water recycled (m3) 1,834,344
Water recycled as % of consumption 58%
Water discharged (m3) 777,254

Table 7. Water Metrics, Marigold Mine

Metric
Water consumption
Surface water (m3) -
Groundwater (m3) 1,619,555
Water recycled (m3) 553,594
Water recycled as % of consumption 34%
Water discharged (m3) -

Table 8. Water Metrics, Seabee Gold Operation

Metric
Water consumption
Surface water (m3) 70,876
Groundwater (m3) -
Water recycled (m3) 54,350
Water recycled as % of consumption 77%
Water discharged (m3) 744,404

Table 9. Water Metrics, Puna Operations

Metric
Water consumption
Surface water (m3) 1,459,270
Groundwater (m3) -
Water recycled (m3) 1,226,400
Water recycled as % of consumption 84%
Water discharged (m3) 32,850