CORONADO GENERATING PLANT Landfill - St Johns, Arizona Solid Waste Management

CORONADO GENERATING PLANT is a landfill facility located in St Johns, Apache County, Arizona, United States. As an operational landfill, it plays a key role in the region's solid waste management infrastructure, handling municipal solid waste disposal for the surrounding area. The facility is situated approximately 6 miles northeast of St Johns along Highway 191. The facility operates under the regulatory framework of the US EPA, specifically RCRA Subtitle D for municipal solid waste landfills, which governs design, operation, and closure standards. Additionally, Clean Air Act regulations apply to landfill gas management, requiring gas collection and control systems for larger landfills. The NAICS codes 221112 (Fossil Fuel Electric Power Generation) and 562212 (Solid Waste Landfill) suggest the facility may also generate energy from landfill gas. Landfills in arid regions like Arizona face unique environmental considerations, particularly regarding groundwater protection and leachate management. The facility's location in Apache County, with its dry climate and proximity to sensitive ecosystems, underscores the importance of proper liner systems and monitoring to prevent contamination. The landfill contributes to community waste disposal while managing methane emissions through gas collection infrastructure.

In the arid environment of Apache County, Arizona, landfill operations must prioritize groundwater protection due to limited water resources. Leachate generation is minimal in dry climates but requires careful management to prevent contamination of underlying aquifers. Landfill gas collection systems are critical to mitigate methane emissions, a potent greenhouse gas, and may be used for energy recovery. The facility's proximity to rural communities necessitates effective odor and traffic management to minimize local impacts.