BOULDER — Xcel Energy ceased burning coal at its Valmont Power Station in 2017, leaving behind 1.6 million tons of toxic coal ash that is now seeping hazardous metals into groundwater, posing a threat to nearby drinking-water wells.
Xcel’s plan involves removing most of the coal ash from a landfill at the site and repurposing it as an ingredient in concrete to be sold in the Denver area. The project is pending approval from the Colorado Department of Public Health and Environment.
The utility company anticipates spending $24 million over the next decade to extract the ash and treat contaminated groundwater, as stated by Michelle Aguayo, an Xcel spokeswoman.
Officials at Boulder County Public Health are in support of the coal-ash cleanup project, emphasizing the benefits of recycling hazardous waste into a useful product. This approach would eliminate a toxic substance from the site and prevent the need to transport it to another community.
Bill Hayes, the county health department’s air quality program director, highlighted the positive environmental impact of the project, emphasizing the reduction in greenhouse gas emissions and the local utilization of the recycled coal ash.
Xcel will be the first utility company in Colorado to embark on such a large-scale coal-ash cleanup following incidents of lithium and selenium contamination in groundwater near the Valmont site.
While Xcel is taking proactive measures to address the coal-ash issue at Valmont, there are numerous coal-ash waste sites across Colorado that continue to leak pollutants into groundwater, underscoring the broader environmental challenge posed by coal ash disposal.
In recent years, efforts to address coal-ash contamination have been hampered by inconsistent reporting and limited regulation. The lack of comprehensive oversight has allowed utility companies to manage coal ash disposal without stringent accountability.
Environmental organizations have identified multiple coal-ash waste sites in Colorado, with some ranking among the most contaminated in the country due to the presence of multiple pollutants exceeding EPA standards.
Despite Xcel’s initiative at Valmont, environmentalists caution that many utility companies may not prioritize comprehensive cleanup efforts unless compelled by regulatory enforcement or legal action. Compliance with existing regulations has been criticized as minimal, with companies seeking to meet the minimum requirements without investing in thorough cleanup efforts.
The Trump administration’s stance on coal-ash regulation has raised concerns about the enforcement of existing rules and the prioritization of coal as an energy source in the country.
As Colorado transitions away from coal-fired power plants towards renewable energy sources, the legacy of coal ash disposal continues to pose environmental and public health risks. Efforts to address coal-ash contamination are essential to safeguard groundwater quality and mitigate the long-term impacts of coal ash disposal.
Overall, the cleanup project at Valmont represents a significant step towards addressing the environmental challenges associated with coal ash disposal in Colorado. By repurposing toxic waste into a useful product, Xcel is demonstrating a commitment to environmental stewardship and responsible waste management.
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