An Incredibly Toxic Lake Will Become One of the US’s First Lithium Mines
An anonymous reader quotes a report from Motherboard: One of the United States’ first major forays into lithium mining seems like it’s going to be in the Salton Sea — one of the most polluted places in the country — after General Motors struck a deal with a mining company called Controlled Thermal Resources. This is a big, and potentially very complicated, deal for anyone who cares about the planet. Many experts believe that in order to have any hope of staving off climate change, we have to electrify cars and essentially everything else as soon as possible (ideally, yesterday). Lithium-ion batteries are key to this process, and global demand is expected to increase between 5 and 18 times over the next several years. Put simply, we will need a lot of lithium, and the overwhelming majority of lithium in today’s batteries comes from Australia, Chile, China, and Argentina. But the American southwest has huge stores of lithium as well.

General Motors is hoping that a CTR mine in the Salton Sea can supply “a significant portion” of the lithium needed for its electric cars. It’s a step toward GM’s first-in-the-nation commitment to phasing gasoline-powered cars out of its production line by 2035 — CTR is slated to start delivering lithium to the company by 2024, at which point the company will be well-poised to achieve this goal.

This is, potentially, a very good thing. But it’s also complicated: Mining, broadly speaking, is environmentally destructive. Lithium mining is usually — but not always — less destructive than, say, strip mining. And the Salton Sea, an accidental reservoir near California vacation mainstays like Joshua Tree and Palm Springs, is one of the most polluted places on the planet due to decades of agricultural runoff. Environmentalists there worry that if the lake continues to dry up, toxic dust on its floor could go airborne and pollute the air between Phoenix and Los Angeles. The lake is understood to hold one of the nation’s largest lithium brine stores, capable of supplying up to 40 percent of global demand for the mineral, according to the California Energy Commission (CEC). CTR claims its production process is self-contained and environmentally sound, as it plans to use renewable energy to extract the mineral.

“But to community members around the proposed mines, ramping up lithium extraction feels complicated,” reports Motherboard. “Chemicals like arsenic, selenium, and pesticides are rampant in the lake’s waters, and their particles have been released into the atmosphere as it dries, which is happening at an increasing rate as drought grips the west coast. […] So, ramping up mining in one of the state’s most polluted counties — where 85 percent of residents are Hispanic or Latino and 22 percent live under the poverty line — feels risky to environmental justice organizers like Miguel Hernandez, communications coordinator at Comite Civico del Valle. Hernandez hopes to see producers and local legislators make an effort to inform residents about the possible, yet-mostly-unknown health effects of lithium mining, which is water-intensive and produces a fair amount of mineral waste.”

Read more of this story at Slashdot.

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