H2O2 - Hydrogen Peroxide
H2S - Hydrogen Sulfide
HA - Hatch Act
HA - Health Advisory
HAD - Health Assessment Document
HAF - Halogen Acid Furnace
HAOB - Headquarters Accounting Operations Branch
HAOP - Houston Area Oxidant Study
HAP - Hazardous Air Pollutant
HAPEMS - Hazardous Air Pollutant Enforcement Management System
HAPPS - Hazardous Air Pollutant Prioritization System
HAR - Hydrogeological Assessment Report
HAR03 - Region 2 Water Quality Models
HATREMS - Hazardous and Trace Emissions System
HAZARD - Hazardous Waste Data Base
HAZMAT - Hazardous Material(s)
HAZOP - Hazard and Operability Study
HAZW - Hazardous Waste Collection Database
HAZWOPER - Hazardous Waste Operations and Emergency Response
HB - Health Benefits
HBEP - Hispanic and Black Employment Programs
HBFC - Hydrobromofluorocarbon
HBL - Health Based Level
HBN - Health Based Numbers
HBPHC - High Boiling Point Hydrocarbon
HC - Hazardous Constituents
HC - Hydrocarbons
HCCPD - Hexachlorocyclopentadiene
HCFC - Hydrochlorofluorocarbon
HCl - Hydrogen Chloride/Hydrochloric Acid
HCP - Hypothermal Coal Process
HCS - Hazard Communication Standard
HCS - Hydrogen Chloride Scrubber
HDD - Heavy Duty Diesel
HDDT - Heavy Duty Diesel Truck
HDECERT - Heavy Duty Engine Certification Data
HDG - Heavy Duty Gasoline Powered Vehicle
HDGT - Heavy Duty Gasoline Truck
HDPE - High Density Polyethylene
HDT - Heavy Duty Truck
HDT - Highest Dose Tested (in a study)
HDV - Heavy Duty Vehicle
HE - Heat Exchanger
HEA - Health Effects Assessment
HEAL - Human Exposure Assessment Location
HEAST - Health Effects Assessment Summary Tables
HECC - House Energy and Commerce Committee
HED - Hazard Evaluation Division
HEED - Health and Environmental Effects Document
HEEP - Health and Environmental Effects Profile
HEGP - Gases and Particles
HEHP - Hazardous Pollutants Research
HEI - Health Effects Institute
HELP Model - Hydrologic Evaluation of Landfill Performance Model
HEM - Human Exposure Modeling
HEOX - Oxidants
HEP - Hispanic Employment Program
HEP - Household Evaluation Program
HEPA - High-Efficiency Particulate Air Filter
HEPS - Pesticides Research
HERD - Health and Environmental Review Division
HERL - Health Effects Research Laboratory
HERS - Hyperion Energy Recovery System
HES - High Energy Scrubber
HESAP - Health and Environmental Study Audit Program
HETC - Toxic Substances Research
HEW - Department of Health, Education and Welfare
HEX - Hexavalent
HEX-BCH - Hexachloronorbornadiene
HFC - Hydrofluorocarbon
HFOS - HERL Forced Oscillation System
Hg - Mercury
HGAS - HERL Gas/Aersol System
HHAG - Health Hazards Assessments Group
HHC - Highly Hazardous Chemical
HHDDV - Heavy Heavy-Duty Diesel Vehicle
HH&E - Human Health and Environment
HHRA - Baseline Human Health Risk Assessment
HHS - Department of Health and Human Services
HHV - Higher Heating Value
HHW - Household Hazardous Waste
HI - Hazard Index
HIDE - Heavy Duty Engine
HISLIB - Effluent Guideline GC/MS Screening Analysis Data Base
HITS - Headquarters Invoice Tracking System
HI-VOL - High Volume Sampler
HIWS - High Level Waste and Standards
HIWAY - A line source model for gaseous pollutants
HLA - Harding Lawson Associates
HLRW - High-Level Radioactive Waste
HLV - Hazard Limiting Value
HLVIT - Vitrification of High Level Mixed Radioactive Wastes
HMCRI - Hazardous Materials Control Research Institute
HMIG - Hazardous Materials Identification Guide
HMIS - Hazardous Materials Information System
HMIS - Rearch Triangle Park Management Information System
HMIWI - Hospital/medical/infectious Waste Incineration
HMR - Hazardous Materials Regulations
HMS - Highway Mobile Source
HMSO - Hazardous Materials Storage Ordinance
HMT - Hazardous Materials Table
HMTA - Hazardous Materials Transportation Act
HMTR - Hazardous Materials Transportation Regulations
HN - Host Nations
HO - Headquarters Office
HOCs - Halogenated Organic Compounds
HOC - Hazardous Organic Constituents
HON - Hazardous Organic NESHAP
HOV - High Occupancy Vehicle
HP - Horse Power
HP - HEPA Filter
HPLC - High Performance Liquid Chromatography
HPLC - High Pressure Liquid Chromatography
HPLX - Reasearch Trianle Park Plexiglas System
HPMS - Highway Performance Monitoring System
HPV - High Priority Violator
HQ - Hazard Quotient
HQ - Headquarters
HQCDO - Headquarters Case Development Officer
HRA - Hourly Rolling Average
HRC - Human Resources Council
HRDB - Human Resources Development Branch
HRL - Health Reference Level
HRPS - High Risk Point Sources
HRS - Hazard Ranking System
HRSD - Hazardous Response Support Division
HRUP - High Risk Urban Problem
HS - Hydrogen Chloride Scrubber
HSCD - Hazardous Site Control Division
HSDB - Hazardous Substance Database
HSIA - Halogenated Solvent Industry Alliance
HSIRS - Health and Safety Inspection Report System
HSL - Hazardous Substance List
HSP - Health and Safety Plan
HSPF - Hydrological Simulation Program
HSWA - Hazardous and Solid Waste Amendments (RCRA, 1984)
HT - Hypothermally Treated
HTHE - High Temperature Heat Exchanger
HTML - Hyper Text Markup Language
HTMR - High Temperature Metals Recovery
HTP - High Temperature and Pressure
HTRN - Research Triangle Park Training System
HTS - Harmonized Tariff Schedule
HUD - Department of Housing and Urban Development
HVAC - Heating, Ventilation and Air Conditioning
HVIO - High Volume Industrial Organics
HVLD - Research Trianle Park Validation System
HW - Hazardous Waste
HWAC - Hazardous Waste Action Coalition
HWC - Hazardous Waste Combustor
HWCAQSP - Hazardous Waste Combustion Air Quality Screening Procedure
HWCL - Hazardous Waste Control Law
HWDMS - Hazardous Waste Data Management System
HWD2 - Region 2 RCRA Facilities Hazard Rating Model
HWED - Hazardous Waste Enforcement Division
HWERL - Hazardous Waste Engineering Research Laboratory
HW-FW - Half Wave/Full Wave
HWGTF - Hazardous Waste Groundwater Task Force
HWGTF - Hazardous Waste Groundwater Test Facility
HWI - Hazardous Waste Incinerator
HWIR - Hazardous Waste Identification Rule
HWIS - Hazardous Waste Information System
HWLT - Hazardous Waste Land Treatment
HWM - Hazardous Waste Management
HWMD - Hazardous Waste Management Division
HWRTF - Hazardous Waste Restrictions Task Force
HWSA - Hazardous Waste Services Association
HWSD - Hazardous Waste Site Data Base
HWSFC - Hazardous Waste Superfund Collection
HWSFD - Hazardous Waste Superfund Database
HWSS - Hazardous Waste and Superfund Staff
HWTC - Hazardous Waste Treatment Council
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