PROMETHEUS MATERIALS INC Cement Plant in Longmont, Colorado | Industrial Utilities

PROMETHEUS MATERIALS INC is a cement plant located at 1822 SUNSET PL UNIT B in Longmont, Colorado, within Boulder County. The facility is operational and falls under NAICS code 327310, which covers cement manufacturing. As a cement plant, it is part of the industrial utilities sector, producing cement for construction and infrastructure projects. The plant operates under the regulatory framework of the United States Environmental Protection Agency (EPA), which includes the Clean Air Act (CAA), Clean Water Act (CWA), Resource Conservation and Recovery Act (RCRA), and Toxics Release Inventory (TRI) Section 313 reporting. Cement plants are subject to specific emissions standards for particulate matter, nitrogen oxides, and sulfur dioxide, and must comply with National Emission Standards for Hazardous Air Pollutants (NESHAP) for the cement manufacturing industry. Cement production is energy-intensive and generates significant CO2 emissions from both fuel combustion and the calcination process. The plant's location in Longmont, a city in the Front Range urban corridor, places it in a region with growing population and construction demand. The facility's environmental significance lies in its contribution to local air quality and greenhouse gas emissions, which are regulated under state and federal programs.

The cement plant is situated in Longmont, Colorado, within the Front Range region known for its rapid urban development and occasional air quality challenges, particularly ozone. Cement manufacturing involves high-temperature kilns that emit criteria pollutants and greenhouse gases. The facility's proximity to residential areas may raise community concerns about dust, noise, and air emissions. Colorado's regulatory framework includes the Colorado Air Pollution Control Division, which implements EPA standards and may impose additional state-specific requirements for cement plants.