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The environment, health, and safety (EHS) field is in the midst of change. Job responsibilities are shifting, there are younger employees joining the workforce, and you are being asked to do more with less.

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August 20, 2010
Enviro 101: Environmental Abbreviations and Acronyms O-R

This list contains abbreviations and acronyms you may run across on this site or in some other EHS context.

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OCD: Offshore and Coastal Dispersion

Od: Outside Diameter

O&M: Operations and Maintenance

OPA: Oil Pollution Act of 1990

ORM: Other Regulated Material

OSHA: Occupational Safety and Health Administration (DOL)

OSWER: Office of Solid Waste and Emergency Response

OTA: Office of Technology Assessment (U.S. Congress)

PA: Preliminary Assessment

PAH: Polycyclic Aromatic Hydrocarbon

PAI: Performance Audit Inspection (CWA)

PA/SI: Preliminary Assessment/Site Inspection (CERCLA)

PAT: Permit Assistance Team (RCRA)

PATS: Pesticide Action Tracking System

PBT: Persistent Bioaccumulative Toxic

PCB: Polychlorinated Biphenyl

pCi/l: Picocuries per Litre

PCP: Pentachlorophenyl

PCS: Permit Compliance System (CWA)

PEL: Permissible Exposure Limit

PEM: Personal Exposure Model

PF: Potency Factor

PM: Particulate Matter

PM-2.5: Particulate Matter (nominally 2.5 microns or less)

PM-10: Particulate Matter (nominally 10 microns or less)

PMN: Premanufacture Notification

PMNF: Premanufacture Notification Form

PNA: Polynuclear Aromatic Hydrocarbons

PNP: Permit Nutrient Plan

POC: Point of Compliance

POE: Point of Exposure

POM: Polycyclic Organic Matter

POTW: Publicly Owned Treatment Works

ppb: Parts per Billion

PPC: Personal Protective Clothing

PPE: Personal Protective Equipment

PPIS: Pesticide Product Information System

ppm: Parts per Million

ppt: Parts per Trillion

PRP: Potentially Responsible Party

PSC: Program Site Coordinator

PSD: Prevention of Significant Deterioration

psi: Pounds per Square Inch

PSM: Point Source Monitoring

PSNS: Pretreatment Standards for New Sources

PTE: Potential to Emit

PTFE: Polytetrafluoroethylene (Teflon)

PVC: Polyvinyl Chloride

PWS: Public Water System (SDWA)

PWSS: Public Water Supply System (SDWA)

QA: Quality Assurance

QA/QC: Quality Assurance/Quality Control

qBtu: Quadrillion British Thermal Units

QC: Quality Control

QNCR: Quarterly Noncompliance Report

RACM: Reasonably Available Control Measures

RACT: Reasonably Available Control Technology

rad: Radiation Absorbed Dose (unit of measurement of radiation absorbed by humans)

RAMS: Regional Air Monitoring System

RAP: Radon Action Program

RCRA: Resource Conservation and Recovery Act

RCRIS: Resource Conservation and Recovery Information System

R&D: Research and Development

REMS: RCRA Enforcement Management System

RF: Response Factor

RFD: Reference Dose Values

RFG: Reformulated Gasoline

RFI: Remedial Field Investigation

RI: Remedial Investigation

RIA: Regulatory Impact Analysis

RI/FS: Remedial Information/Feasibility Study

RISC: Regulatory Information Service Center (OMB)

ROC: Record of Communication

ROD: Record of Decision (CERCLA)

RP: Responsible Party

RPM: Revolutions per Minute

RQ: Reportable Quantities

RRC: Regional Response Center

RRT: Regional Response Team

RSPA: Research and Special Programs Administration (DOT)

RVP: Reid Vapor Pressure

Abbreviations and Acronyms A and B
Abbreviations and Acronyms C and D
Abbreviations and Acronyms E through G
Abbreviations and Acronyms H through K
Abbreviations and Acronyms L through N
Abbreviations and Acronyms O through R
Abbreviations and Acronyms S and T
Abbreviations and Acronyms U through Z

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