Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Air: Fate, Exposure, and Risk Analysis (FERA)

Download Hazardous Air Pollutant Exposure Model (HAPEM)

Fate, Exposure and Risk Models Download
  • General Information
  • TRIM.FaTE Download
  • TRIM.ExpoInhalation/ APEX Download
  • TRIM.Risk Download
  • HAPEM Download
  • HEM Download

1. General Information

Two versions of HAPEM are available for download from this page. The latest version is HAPEM8. General information about and documentation on HAPEM is available from the HAPEM page. Information about the currently available versions of HAPEM is provided in the model update fact sheet. For information on new files, models, etc., check "Recent Additions."

2. Installation Instructions

  1. Download any documentation files of interest from the HAPEM page.
  2. Download HAPEM from Section 3 (Software Available for Download) below.
  3. Follow the installation instructions in the appropriate HAPEM README file from Section 3 (Software Available for Download) below.
  4. Users may run any version of HAPEM in “stand alone” mode.

3. Software available for download

Please read installation instructions (above) before installing files.

  1. HAPEM8 (zip)  (December 2024)
  2. HAPEM8 README file (txt)  (December 2024)
  3. HAPEM7 (exe) (32.88 MB)  (January 2016)
  4. HAPEM7 README FILE (txt) (3.97 KB)  (January 2016)

4. Input Data

HAPEM input files are included with the HAPEM installation package.

5. Example Applications

These example applications are for training purposes only and are not intended to apply to any real world situation.

"HAPEM (1 chem)" - This package provides instructions for setting up and running an example application where HAPEM calculates inhalation exposure estimates for a single chemical.

Step 1. - If TRIM has not been previously installed, install it using the TRIM Installer. Be sure to select "Inhalation Exposure Assessment with HAPEM" when prompted to "Please select the activities you expect to perform with TRIM."

Step 2. - Download HAPEM and accompanying input files from Section #3 (Software Available for Download) above.

Step 3. - Confirm that the Human Toxicity Value Database is currently installed on your computer. To do this, go to the "MySQL Server 4.x\data" subdirectory of the MySQL directory on your computer (e.g., C:\Program Files\MySQL\MySQL Server 4.1\data) and check to see if the "HHToxDB" directory exists. If so, the Human Toxicity Value Database is installed. If you have not previously installed this database, download it from the TRIM.Risk Download page and follow the instructions for installing it.

Step 4. - Confirm that the HAPEM Census Tract Database is currently installed on your computer. To do this, go to the "MySQL Server 4.x\data" subdirectory of the MySQL directory on your computer (e.g., C:\Program Files\MySQL\MySQL Server 4.1\data) and check to see if the "hapem_countyinfo_2000" directory exists. If so, the HAPEM Census Tract Database is installed. If you have not previously installed this database, download it from Section #4 (Input Data) above and follow the instructions for installing it.

Step 5. - Download "HAPEM (1 chem)" example application instructions. Print this file and follow the directions.


"HAPEM (>1 chem)" - This package provides instructions for setting up and running an example application where HAPEM calculates inhalation exposure estimates for multiple chemicals.

Step 1. - If TRIM has not been previously installed, install it using the TRIM Installer. Be sure to select "Inhalation Exposure Assessment with HAPEM" when prompted to "Please select the activities you expect to perform with TRIM."

Step 2. - Download HAPEM and accompanying input files from Section #3 (Software Available for Download) above.

Step 3. - Download the ZIP package HAPEM (>1 chem) Example Application (zip) (21.81 MB) .

Step 4. - Unzip ExampleApp_HAPEM_Multi.zip into the "input" subdirectory of your HAPEM directory (e.g., C:\HAPEM\input). Be sure to maintain the directory structure of the files being unzipped. This is done by default with WinZip's Wizard interface, and is done by checking the "Use folder names" box in the Extract screen of WinZip's Classic interface.

This ZIP file contains the following five files: con43218.txt
con43301.txt
con43367.txt
con43370.txt
StepsForHAPEM_Multi_ExampleApp.pdf

Step 5. - Confirm that the Human Toxicity Value Database is currently installed on your computer. To do this, go to the "MySQL Server 4.x\data" subdirectory of the MySQL directory on your computer (e.g., C:\Program Files\MySQL\MySQL Server 4.1\data) and check to see if the "HHToxDB" directory exists. If so, the Human Toxicity Value Database is installed. If you have not previously installed this database, download it from the TRIM.Risk Download page and follow the instructions for installing it.

Step 6. - Confirm that the HAPEM Census Tract Database is currently installed on your computer. To do this, go to the "MySQL Server 4.x\data" subdirectory of the MySQL directory on your computer (e.g., C:\Program Files\MySQL\MySQL Server 4.1\data) and check to see if the "hapem_countyinfo_2000" directory exists. If so, the HAPEM Census Tract Database is installed. If you have not previously installed this database, download it from Section #4 above and follow the instructions for installing it.

Step 7. - Print the StepsForHAPEM_Multi_ExampleApp.pdf (unzipped in Step 4) and follow its steps.

6. Links to Related Information

  1. Multimedia Integrated Modeling System (MIMS) Page
  2. Fate, Exposure, and Risk Analysis Download Page
  3. Fate, Exposure, and Risk Analysis Home Page

Air: Fate, Exposure, and Risk Analysis (FERA)

  • Total Risk Integrated Methodology (TRIM)
    • TRIM.FaTE
    • TRIM.Expo
    • TRIM.Risk
    • Peer Review and Publications
  • Multimedia Fate and Transport Modeling
    • TRIM.FaTE
    • Other Models and Related Information
  • Human Exposure Assessment and Modeling
    • Criteria Air Pollutant Exposure Assessment
    • Databases to Support Exposure Modeling
    • Air Pollutants Exposure Model (APEX/ TRIM.Expo Inhalation)
    • Hazardous Air Pollutant Exposure Model (HAPEM)
    • Other Models and Exposure-Related Information
  • Risk Assessment and Modeling
    • Air Toxics Risk Assessment
    • Criteria Air Pollutant Risk Assessment
    • Human Exposure Model (HEM)
    • EPA Risk Assessment Policy, Guidelines, and Related Materials
Contact Us about FERA
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on December 20, 2024
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.