Arq, Inc. is an environmental technology company that manufactures and sells activated carbon and other chemical treatment solutions for capturing and removing contaminants such as mercury and per- and polyfluoroalkyl substances ("PFAS") from air, water, and soil. The company serves coal-fired power generation, industrial, water treatment, and remediation markets, producing powdered and granular activated carbon from raw materials sourced from its own mining operations, and generates revenue through consumable product sales and fixed minimum purchase contracts with utilities, industrial facilities, and water treatment plants. The company's business is driven by regulatory demand for environmental compliance, coal consumption levels in power generation, natural gas pricing relative to coal, and the acceptance of its proprietary purification technologies in water and air treatment applications.