NTMWD 121 Regional Disposal Facility - Landfill in Melissa, Texas, USA

NTMWD 121 Regional Disposal Facility is a landfill located at 3820 Sam Rayburn Highway in Melissa, Collin County, Texas. Owned by the North Texas Municipal Water District, it has been operational since 2004 and is projected to close in 2062. As a regional disposal facility, it serves the growing population of North Texas, managing municipal solid waste from multiple communities. The facility operates under the regulatory framework of the US EPA, including RCRA Subtitle D for municipal solid waste landfills and Clean Air Act landfill gas regulations. Texas Commission on Environmental Quality (TCEQ) oversees state-level permitting and compliance. The landfill likely employs modern liner and leachate collection systems to protect groundwater, and may have landfill gas collection for energy recovery or flaring, common for large-scale landfills in the region. This facility plays a critical role in the solid waste management infrastructure of Collin County and the Dallas-Fort Worth metroplex. Its long operational lifespan through 2062 indicates significant capacity and planning. Proper management of landfill gas and leachate is essential to minimize environmental impacts, given the facility's proximity to residential areas and the sensitive ecology of the Blackland Prairie region.

The facility is located in the Blackland Prairie region of Texas, characterized by clay-rich soils that can influence leachate management. Landfill gas, primarily methane, is a key environmental concern; collection systems are typically required to reduce greenhouse gas emissions and odor. Proximity to residential areas in Melissa and nearby communities necessitates careful traffic management and dust control. Groundwater protection is critical, with liners and monitoring wells required under RCRA Subtitle D to prevent contamination of the shallow aquifer.