Continuing Education Module 4 – Exposure Pathway Evaluation

Public Health Assessment Training

Biologist testing water quality of river

Program Description:
“Module 4: Exposure Pathway Evaluation” covers ATSDR’s process to evaluate exposure pathways for contaminants at hazardous waste sites and addresses three primary topics: (1) elements of an exposure pathway, (2) exposure pathways classifications, and (3) exposure pathway analysis.

After completing Module 4: Exposure Pathway Evaluation, learners will be able to:

  1. Describe the importance of the exposure evaluation.
  2. Define what it means to be exposed.
  3. Name the five elements of an exposure pathway.
  4. List the factors to evaluate the elements of an exposure pathway.
  5. Identify the different categories of an exposure pathway.
  6. Apply tips to conduct the exposure evaluation.
  7. Evaluate the Gala Lumber Company site’s exposure pathways (case study).


  • David Mellard PhD, Associate Director for Science, Agency for Toxic Substances and Disease Registry/ Office of Capacity Development and Applied Prevention Science/ Associate Director for Science
  • Gregory (Greg) Zarus MS MS BS BS, Director of Office of Innovation and Analytics, Agency for Toxic Substances and Disease Registry/ Office of Community Health and Hazard Assessment/ Office of Innovation and Analytics
  • Sandra M. López-Carreras MS BS, Health Scientist, Agency for Toxic Substances and Disease Registry/ Office of Capacity Development and Applied Prevention Science/ Associate Director for Science

Origination Date: April 9, 2024
Expiration Date:
April 9, 2026


Hardware/Software: Computer Hardware; Internet Connection; Browser

Materials: None

Target Audience:
Environmental Health Specialists, Toxicologists, Community Involvement Specialists, Health Communication Specialists, Certified Health Educators, Epidemiologists, Program Managers

Prerequisites: None

Format: This activity is Web-based.

Contact Information:
Sandra M. López-Carreras ATSDR/OCDAPS; 770-488-0663

Accreditation Statements:
CEU: The Centers for Disease Control and Prevention is authorized by IACET to offer 0.2 CEU’s for this program.

CECH: Sponsored by the Centers for Disease Control and Prevention, a designated provider of continuing education contact hours (CECH) in health education by the National Commission for Health Education Credentialing, Inc. This program is designated for Certified Health Education Specialists (CHES®) and/or Master Certified Health Education Specialists (MCHES®) to receive up to 1.5 total Category I continuing education contact hours. Maximum advanced level continuing education contact hours available are 1.5. Continuing Competency credits available are 1.5 CDC provider number 98614.

For Certified Public Health Professionals (CPH)
The Centers for Disease Control and Prevention is a preapproved provider of Certified in Public Health (CPH) recertification credits and is authorized to offer 2.0 CPH recertification credits for this program.

In compliance with continuing education requirements, all planners and presenters must disclose all financial relationships, in any amount, with ineligible companies during the previous 24 months as well as any use of unlabeled product(s) or products under investigational use.

CDC, our planners, and content experts, wish to disclose they have no financial relationships with ineligible companies whose primary business is producing, marketing, selling, reselling, or distributing healthcare products used by or on patients.

Content will not include any discussion of the unlabeled use of a product or a product under investigational use.

CDC did not accept financial or in-kind support from any ineligible company for this continuing education activity.

Instructions for Obtaining Continuing Education (CE)
To receive continuing education (CE) for WB4809- Public Health Assessment Training Module 4: Exposure Pathway Evaluation, please visit CDC TRAIN and search for the course in the Course Catalog using WB4809. Follow the steps below by 04/09/2026.

  1. Register for and complete the course.
  2. Pass the post-assessment at 70%.
  3. Complete the evaluation.
  4. Visit Your Learning to access your certificates and transcript.

No fees are charged for CDC’s CE activities.