AC Alternating Current
CPR Cardiopulmonary Resuscitation
EF Electrofishing
GFCI Ground-Fault-Circuit-Interruptor
IRP Installation Restoration Program
OSHA Occupational Safety and Health Administration
PFD Personal Flotation Device
PVC Polyvinyl Chloride
RP Redox Potential
TCP Traffic Control Plan
TWRI Techniques for Water-Resources Investigations
US United States
USGS United States Geological Survey
WRD Water Resources Division
http://water.er.usgs.gov/pubs/ofr/ofr95777/acronyms.html