The abbreviations on this page were originally defined on the United States Environmental Protection Agency website.


HA: Health Advisory

HAD: Health Assessment Document

HAP: Hazardous Air Pollutant

HAPEMS: Hazardous Air Pollutant Enforcement Management System

HAPPS: Hazardous Air Pollutant Prioritization System

HATREMS: Hazardous and Trace Emissions System

HAZMAT: Hazardous Materials

HAZOP: Hazard and Operability Study

HBFC: Hydrobromofluorocarbon

HC: Hazardous Constituents; Hydrocarbon

HCCPD: Hexachlorocyclo-pentadiene

HCFC: Hydrochlorofluorocarbon

HCP: Hypothermal Coal Process

HDD: Heavy-Duty Diesel

HDDT: Heavy-duty Diesel Truck

HDDV: Heavy-Duty Diesel Vehicle

HDE: Heavy-Duty Engine

HDG: Heavy-Duty Gasoline-Powered Vehicle

HDGT: Heavy-Duty Gasoline Truck

HDGV: Heavy-Duty Gasoline Vehicle

HDPE: High Density Polyethylene

HDT: Highest Dose Tested in a study. Heavy-Duty Truck

HDV: Heavy-Duty Vehicle

HEAL: Human Exposure Assessment Location

HECC: House Energy and Commerce Committee

HEI: Health Effects Institute

HEM: Human Exposure Modeling

HEPA: High-Efficiency Particulate Air

HEPA: Highly Efficient Particulate Air Filter

HERS: Hyperion Energy Recovery System

HFC: Hydrofluorocarbon

HHDDV: Heavy Heavy-Duty Diesel Vehicle

HHE: Human Health and the Environment

HHV: Higher Heating Value

HI: Hazard Index

HI-VOL: High-Volume Sampler

HIWAY: A Line Source Model for Gaseous Pollutants

HLRW: High Level Radioactive Waste

HMIS: Hazardous Materials Information System

HMS: Highway Mobile Source

HMTA: Hazardous Materials Transportation Act

HMTR: Hazardous Materials Transportation Regulations

HOC: Halogenated Organic Carbons

HON: Hazardous Organic NESHAP

HOV: High-Occupancy Vehicle

HP: Horse Power

HPLC: High-Performance Liquid Chromatography

HPMS: Highway Performance Monitoring System

HPV: High Priority Violator

HQCDO: Headquarters Case Development Officer

HRS: Hazardous Ranking System

HRUP: High-Risk Urban Problem

HSDB: Hazardous Substance Data Base

HSL: Hazardous Substance List

HSWA: Hazardous and Solid Waste Amendments

HT: Hypothermally Treated

HTP: High Temperature and Pressure

HVAC: Heating, Ventilation, and Air-Conditioning system

HVIO: High Volume Industrial Organics

HW: Hazardous Waste

HWDMS: Hazardous Waste Data Management System

HWGTF: Hazardous Waste Groundwater Task Force; Hazardous Waste Groundwater Test Facility

HWIR: Hazardous Waste Identification Rule

HWLT: Hazardous Waste Land Treatment

HWM: Hazardous Waste Management

HWRTF: Hazardous Waste Restrictions Task Force

HWTC: Hazardous Waste Treatment Council

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