POM—Princeton Ocean Model
POP—Persistent Organic Pollutant
POT—Peaks-Over Threshold
POTW—Publicly Owned Treatment Works (U.S.)
POU—Point of Use
PP—Polypropylene
PP—Precautionary Principle
ppb—Parts per Billion
ppbv—Parts per Billion by Volume
PPE—Personal Protective Equipment
PPEQ—Pre-Project Environmental Questionnaire
ppm—Parts per Million (Milligrams per Liter) (Grams per
Cubic Meter)
ppmv—Parts per Million by Volume
ppmw—Parts per Million by Weight
ppt—Parts per Trillion
ppth—Parts per Thousand
PPU—Pertinent Process Unit
Pr—Prandt1 Number
PRA—Paperwork Reduction Act (U.S.)
PRA—Probabilistic Risk Assessment
PRAS—Prereduced Anaerobically Sterilized
PRG—Preliminary Remediation Goals (U.S.)
PRP—Potentially Responsible Party (U.S.)
PRZ—Potential Repository Zone
PS—Polystyrene
PSA—Probabilistic Safety Assessment
PSAC—President’s Science Advisory Committee (U.S.)
PSC—Polar Stratospheric Cloud
PSD—Prevention of Significant Deterioration (U.S.)
PSF—Peat-Sand Filter
PSF—Pounds per Square Foot
PSI—Pounds per Square Inch
PSM—Process Safety Management (U.S.)
PSR—Preliminary Safety Report
PSRP—Process to Significantly Reduce Pathogens
PTFE—Polytetrafluoroethylene
P3—Public Performance-Based Permitting Program
PTM—Photochemical Trajectory Model
PTR—Project Tracking Register
PTWI—Provisional Tolerable Weekly Intake
P2—Pollution Prevention
PU—Polyurethane
PULSAR—Phillips’ Ultra Low Sulfur Atmospheric Residue
PV—Permanganate Value
PV—Photovoltaic
PV—Polyvinyl
PVA—Polyvinyl Acetate
PVA—Process Vulnerability Analysis
PVC—Polyvinyl Chloride
PVS—Physical Vapor Synthesis
PVT—Photovoltaic/Thermal
PWS—Public Water System
PZC—Point of Zero ChargeQA—Quality Assurance
QACC—Quaternary Ammonium Compounds
QAPP—Quality Assurance Project Plan (U.S.)QC—Quality Control
QEP—Qualified Environmental Professional
QF—Qualified Facility
QIP—Quality Improvement Program
QPF—Quantitative Precipitation Forecast
QRA—Quantitative Risk Assessment
QSAR—Quantitative Structure Activity Relationship
QUANGO—Quasi Autonomous Non-Governmental
Organization
QUARG—Quality of Urban Air Review GroupR—Rankine
R—Universal Gas Constant
r—Roentgen
RA—Rapid Appraisal
RAB—Registrar Accreditation Board
RACT—Reasonably Available Control Technology
Rad—Roentgen-Absorption-Dose
RADWASS—IAEA Publication on Radioactive Waste
RAF—Radiation Amplification Factor
RAMS—Regional Atmospheric Model System
RAP—Rapid Assessment Program
RAR—Reasonable Assumed Resource
RaSoS—Raman Sort Spectrometer
RBC—Rotating Biological Contactor
RBCA—Risk Based Corrective Action
RBE—Relative Biological Effectiveness
RBSL—Risk-Based Screening Levels
RCEP—Royal Commission on Environmental Pollution
(UK)
RCM—Regional Climate Modelling
RCO—Regenerative Catalytic Oxidation
RCRA—Resource Conservation and Recovery Act (U.S.)
RCT—Reference Control Technology
R & D—Research and Development
RD & D—Research, Development and Demonstration
RDF—Refuse-Derived Fuel
RDS—Residue-Oil Hydrodesulfurization
Re—Reynolds Number
REACH—Registration, Evaluation, Authorization of
Chemicals
RECLAIM—Regional Clean Air Incentives Market (U.S.)
REI—Regional Environmental Initiative
REL—Recommended Exposure Limit
REMA—Regulatory Environmental Modelling of
Antifoulants
REO—Renewable Energy Obligation
RERF—Radiation Effects Research Foundation
Rem—Roentgen-Equivalent-Man
Rep—Roentgen-Equivalent-Physical
RF—Radio Frequency
RFBR—Russian Federation for Basic Research
RFCC—Residue-Oil Fluid Catalytic Cracking
REF—Resources for the Future
RFG—Reformulated Gasoline
RFLPS—Restriction-Fragment-Length Polymorphisms
RGH—Renewably Generated Hydrogen
RGR—Relative Growth Rate1368 ACRONYMS AND ABBREVIATIONS
C024_001_r03.indd 1368C024_001_r03.indd 1368 11/18/2005 1:36:05 PM11/18/2005 1:36:05 P