MF microfiltration
MGD million gallons per day
MLE Modified Ludzack-Ettinger
MOS margin of safety
MOU memorandum of understanding
NGO nongovernmental organization
NNC numeric nutrient criteria
NOI notice of intent
NPDES National Pollutant Discharge Elimination System
NRC National Research Council
NRCS Natural Resources Conservation Service
OIG Office of Inspector General
O&M operation and maintenance
OSTDS onsite sewage treatment and disposal system
PRB permeable reactive barrier
RO reverse osmosis
SCM stormwater control measure
SIC Standard Industrial Classification
SSAC site-specific alternative criteria
SW surface water
SWIM Surface Water Improvement and Management Act
TMDL Total Maximum Daily Load
TN total nitrogen
TP total phosphorus
TRAP Technical Review Advisory Panel
UCT University of Cape Town
USDA U.S. Department of Agriculture
WBID Waterbody Identification Number1
WLA waste load allocation
WQBEL water quality-based effluent limit
WQS water quality standards
WWTP wastewater treatment plants


1 WBID is used colloquially to refer to certain impaired waters, but technically the term also includes the surrounding drainage basin.

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