TPD

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

TMA

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

TAZ

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

STEM

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.

SMOKE

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.

SEP

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