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Developer says Hermosa project will use far less fresh water, offers voluntary well-protection plan

5841461 · September 4, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

South32/Grama representatives told the Nogales City Council the Hermosa project is 40% into construction, will deploy new water- and air-monitoring programs, and is offering voluntary agreements to ensure local private wells keep supply if mining affects them.

Pat Reisner, president of Grama, updated the Nogales City Council on the Hermosa mining project on Sept. 3, saying construction is about 40% complete and the company expects to use significantly less fresh water in operations than traditional mines.

The company presented what it called a voluntary well-protection program for private well owners within a five-mile radius of the mine, baseline and ongoing air monitoring, and a workforce-training plan that the company said is intended to prioritize local hires.

The voluntary well-protection plan will monitor private wells and, if mine activity were ever shown to reduce a property’s supply, the company said it would pay to deepen or relocate wells so residents retain continuous water service. “We voluntarily offered to monitor wells within…

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