I/A - Innovative Alternative
IAAC - Interagency Assessment Advisory Committee
IAD - Internal Audit Division
IADB - Innovative/Alternative Pollution Control Technology Facility File Data Base
IADN - Integrated Atmospheric Deposition Network
IAEA - International Atomic Energy Agency
IAG - Inter-Agency Agreement
IAG - Inter Agency Group
IAGP - Installation Accountable Government Property
IAP - Incentive Awards Program
IAP - Indoor Air Pollution
IAQ - Indoor Air Quality
IARC - International Agency for Research on Cancer
IAS - Incineration at Sea Site Monitoring and Permits File
IATDB - Interim Air Toxics Data Base
IBA - Industrial Biotechnology Association
IBR - Incorporation by Reference
IBRD - International bank for Reconstruction and Development
IBSIN - Innovations in Building Sustainable Industries
IBT - Industrial Biotest Laboratory
IC - Internal Combustion
IC - Ion Chromatography
ICAIR - Interdisciplinary Planning and Information Research
ICAP - Inductively Coupled Argon Plasma
ICB - Information Collection Budget
ICB - Initial Calibration Blank
ICBEN - International Commission on the Biological Effects of Noise
ICB/ETD - Industrial Chemistry Branch/Economics and Technology Division
ICBN - International Commission on the Biological Effects of Noise
ICC - Interstate Commerce Commission
ICCA - International Council of Chemical Associations
ICCP - International Climate Change Partnership
ICCR - Industrial Combustion Coordinated Rulemaking
ICE - Industrial Combustion Emissions Model
ICE - Internal Combustion Engine
ICE Model - Internal Combustion Emissions Model
ICOLP - Industry Cooperative for Ozone Layer Protection
ICP - Inductively Coupled Plasma
ICP-AES - Inductively Coupled Plasma - Atomic Emission
Spectrophotometry
ICPIC - International Cleaner Production Information Clearinghouse
ICR - Information Collection Request
ICRA - Industrial Chemical Research Association
ICRE - Ignitability, Corrosivity, Reactivity, Extraction
ICRP - International Commission on Radiological Protection
ICRU - International Commission on Radiological Units and Measurements
ICS - Incident Command System
ICS - Institute for Chemical Studies
ICS - Intermittent Control Strategies
ICS - Intermittent Control System
ICV - Initial Calibration Verification
ICWM - Institute for Chemical Waste Management
ICWP - Interstate Conference on Water Problems
ID - Inside Diameter
ID - Identification
IDBS - Imports Data Base
IDEQ - Idaho Department of Environmental Quality
IDIQ - Indefinite Delivery Indefinite Quantity
IDL - Instrument Detection Limit
IDLH - Immediately Dangerous to Life or Health
IDP - Individual Development Plan
IDT - Indefinite Delivery Type
IE - Ion Exchange
IEB - International Environment Bureau
IEHR - Institute for Evaluating Health Risks
IEMB - Integrated Environmental Management Division
IEMP - Integrated Environment Management Project
IEMS - Integrated Emergency Mangement System
IEN - Information Exchange Network
IEPD - Industrial and Extrative Processes Division
IERL - Industrial Environment Research Laboratory
IES - Institute for Environmental Studies
IEU/BK - Integrated Exposure Uptake/ Biokinetic Model
IFB - Invitation for Bid
IFCAM - Industrial Fuel Choice Analysis Model
IFCS - International Forum on Chemical Safety
IFD - Industrial Facilities Discharge File (file within STORET)
IFIS - Industrial File Information System
IFMS - Integrated Financial Management System
IFPP - Industrial Fugitive Process Particulate
IFR - Interim Final Rule
IG - Inspector General
IGCC - Integrated Gasification Combined Cycle
IGCI - Industrial Gas Cleaning Institute
IGD - Inspector General Division
IGWMC - International Ground Water Modeling Center
IHEU - In-House Equipment Utilization
IHS - Indian Health Service
IINERT - In-Place Inactivation and Natural Restoration Technologies
IIS - Inflationary Impact Statement
IJC - International Joint Commission between the U.S. and Canada
ILS - Intergovernmental Liason Staff
I&M - Inspection & Maintenance
I/M - Inspection/Maintenance
IMAGERY - Multispectral Scanner and Photographic Imagery
IMAN - NEIC Image Analysis System
IMD - Information Management Division
IMDL - Inter-Laboratory Method Detection Limit
IMERC - Incineration of Wastes Containing Organics and Mercury
IMIS - Research Triangle Park Management Information System
IMM - Intersection Midblock Model
IMO - Information Management Office
IMPACT - Integrated Model of Plumes and Atmosphere in Complex Terrain
IMPROVE - Inter-Agency Monitoring of Protected Visual Environment
IMS - Information Management Staff
IMSD - Information Mangement and Services Division
INCE - Institute of Noise Control Engineers
INDX - Enforcement Document Retrieval System
INFORMED - Information Needs for Making Environmental Decisions
INPUFF - Gaussian Puff Dispersion Model
INT - Intermittent
INVITRO - Research Trianle Park In Vitro System
IO - Immediate Office
IOAA - Immediate Office of the Assistant Administrator
IOAU - Input/Output Arthmetric Unit
IOB - Iron Ore Beneficiation
IOC - Inorganic Chemical
IOTV - Interoffice Transfer Voucher
IOU - Input/Output Unit
IP - Induced Polarization
IP - Inhalable Particles (Particulates)
IPA - Intergovernmental Personnel Act
IPA - Intergovernmental Personnel Agreement
IPA - Isopropyl Alcohol (isopropanol)
IPCC - Intergovernmental Panel on Climate Change
IPCS - International Program on Chemical Safety
IPM - Inhalable Particulate Matter
IPM - Integrated Pest Management
IPM - Insoluble Polystyrene Microspheres
IPMN - Inhalable Particular Network
IPMPCS - Integrated Pest Management and Program Coordination Staff
IPP - Implementation Planning Program
IPP - Integrated Plotting Package
IPP - Intermedia Priority Pollutant
IPP - Independent Power Producer
IQAT - Independent Quality Assurance Team
IR - Infrared
IR - Installation Restoration
IR - Intake ratio
IR - Ingestion or Inhalation Rate
IRA - Interim Response Action
IRD - Information Resources Directory
IRF - Incineration Research Facility
IRG - Inter-Agency Review Group
IRIS - Instructional Resources Information System
IRIS - Integrated Risk Information System
IRLG - Interagency Regulatory Liaison Group (composed of EPA, CPSC, FDA, and OSHA)
IRM - Immediate Remedial Measures
IRM - Information Resources Management
IRM - Interim Remedial Measures
IRMC - Inter-Regulatory Risk Management Council
IRP - Installation Restoration Program
IRPTC - International Register of Potentially Toxic Chemicals
IRR - Institute of Resource Recovery
IRR - Inventory Reporting Requirement System
IRS - Intergovernmental Relations Staff
IRS - Intermedia Ranking Staff
IRS - Internal Revenue Service
IRS - International Referral Systems
IRSD - Information and Regulatory Systems Division
IRTA - Institute for Research and Technical Assistance
IS - Indicator Source
IS - Interim Status
ISAM - Indexed Sequential File Access Method
ISC - Industrial Source Complex
ISCL - Interim Status Compliance Letter
ISCLT - Industrial Source Complex Long-term Model
ISCST - Industrial Source Complex Short-term Model
ISCST3 - Industrial Source Complex Short Term 3
ISCSTDFT - Industrial Source Complex Short Term Draft
ISD - Information Services Division
ISD - Information Systems Division
ISD - Interim Status Document
ISDB - Industry Studies Data Base
ISE - Ion-Specific Electrode
ISI - Information Systems Inventory
ISIS - Industry File Indexing System
ISMAP - Indirect Source Model for Air Pollution
ISO - International Standards Organization
ISPF - Interactive System Productivity Facility
ISS - Information Security Specialist
ISS - Information Sysytems Staff
ISS - Interim Status Standards
ISTEA - Intermodal Surface Transportation Efficiency Act
ISV - In-Situ Vitrification
ISWMP - Integrated Solid Waste Management Plan
ITC - Innovative Technology Council
ITC - Inter-Agency Testing Committee (EPA, DOI, OSHA, et.al.)
ITC - International Trade Commission
ITD - Industrial Technology Division
ITD - Inhalation Toxicological Division
ITDP - Individual Training and Development Plan
ITMS - Integrated Transportation Management System
ITP - Individual Training Plan
ITR - Innovative Technology Requirement
ITRC - Interstate Technology Regulatory Coordination
ITRD - Innovative Treatment Remediation Demonstration
ITS - Intelligent Transportation System
ITS - Interagency Testing Committee Tracking System
ITSS - Integrated Technical Support Services System
IUFED - In-USE Vehicle Fuel Economy Data
IUP - Intended Use Plan
IUR - Inventory Update Rule
IUTA - In-Use Technology Assessment
IVTC - International Visitors and Travel Coordinator
IV&V - Independent Validation and Verification
IWC - In-Stream Waste Concentration
IWS - Ionizing Wet Scrubber
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