Glossary (continued) 
ICE 
K. 
LaMP 
LC50 
MAHA 
MED 
NAWQA 
NCEA 
NED-H 
NEP 
NERL 
NHEERL 
NMDS 
NMFS 
NOAA 
NOAEL 
NPDES 
N/P 
NPS 
NRC 
NRDA 
NRMRL 
OEI 
OPP 
OPPTS 
ORD 
OST 
OW 
OWOW 
PAH 
PBTK/TD 
PBT 
PCB 
PCDD 
PCDF 
PHYTOTOX 
REMAP 
RFP 
SAV 
SI 
SOLEC 
SPARROW 
SPRC 
Interspecies Correlation Estimation 
Octonal-water Partition Coefficient 
Lakewide Management Plan 
Lethal Concentration (50%) 
Mid-Atlantic Highlands Assessment 
Mid-continent Ecology Division 
National Water Quality Assessment 
National Center for Environmental Assessment 
National Elevation Dataset (Hydrology) 
National Estuarine Program 
National Exposure Research Laboratory 
National Health and Environmental Effects Research Laboratory 
Nonmetric Dimensional Scaling 
National Marine Fisheries Service 
National Oceanographic and Atmospheric Administration 
No Observed Adverse Effect Level 
National Pollutant Discharge Elimination System 
Nitrogen/Phosphorus 
Nonpoint Source 
National Research Council 
Natural Resources Damage Assessment 
National Risk Management Research Laboratory 
Office of Environmental Information 
Office of Pesticide Programs 
Office of Prevention, Pesticides, and Toxic Substances 
Office of Research and Development 
Office of Science and Technology 
Office of Water 
Office of Wetlands, Oceans, and Watersheds 
Polycyclic Aromatic Hydrocarbon 
Physiologically-Based Toxicokinetic/Toxicodynamic 
Persistent Bioaccumulative Toxicant 
Polychorinated biphenyls 
Polychorinated dibenzo dioxins 
Polychorinated dibenzo furans 
Terrestrial Plant Toxicity Database 
Regional EMAP 
Request for Proposals 
Submerged Aquatic Vegetation 
Stressor Identification 
State of the Lake Ecosystem Conference 
Spatial Referenced Regressions on Watersheds 
Strategic Planning Research Coordination 
XII 
