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Tons Per Day (TPD) is used as a measurement of the solid waste disposal rate at a landfill, incinerator or materials recovery facility.


Transportation Management Associations (TMA) is a formal organization of businesses and local governments dedicated to solving local transportation concerns.


Transportation Analysis Zone (TAZ) is the unit of geography most commonly used in conventional transportation planning models.


The Storage tank emissions management (STEM) require emission reduction from storage tanks at exploration and production operations, well production facilities, compressor stations, and processing plants.


Sparse Matrix Operator Kernel Emissions (SMOKE) is primarily an emissions processing system designed to create gridded, speciated, hourly emissions for input into a variety of air quality models.


Supplemental Environmental Project (SEPs) are a means by which penalties for environmental violations may be mitigated by directing funds toward environmentally beneficial projects.