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Environmental Health Investigations Branch

Environmental Health Investigations Branch

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Providing opportunities, knowledge, tools and resources that enable communities to make informed decisions


Vapor Intrusion Information

Vapor intrusion is when vapor or gas from chemical contaminants underground migrate into overlying buildings. Clock the image or link below to find out more about vapor intrusion.


What is a Community Health Study?

The link below is to a website created to share the experience and perspective of public health staff dedicated to studying links between environmental exposure to chemicals and health effects in California communities.

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Annual Stakeholder Roundtable Proceedings

Each year the Environmental Health Investigations Branch's Site Assessment Section (SAS) convenes a day long Stakeholder Roundtable. The Roundtables are part of the proactive outreach to stakeholders representing diverse communities in California and representatives of NGOs, academia, federal, state and local agencies. It provides the Site Assessment Section with an opportunity to discuss environmental public health concerns in a neutral setting; it fosters a productive learning environment for all participants and provides the SAS with guidance for its current and future work.

If you are having difficulty accessing the following documents please contact CDPH at (510) 620-3610 or to request this information in an alternate format.

Listening to South Gate: The Community’s Environmental Health Concerns

In order to evaluate environmental stressors from the perspective of the community, the California Department of Public Health (CDPH) used the Protocol for Assessing Community Excellence in Environmental Health (PACE-EH) for a city located in South East Los Angeles. PACE-EH was developed by the Centers for Disease Control and Prevention (CDC) and the National Association of County and City Health Officials (NACCHO) to engage and empower communities to determine, prioritize, and address the environmental health stressors in their neighborhoods. Although the PACE EH suggests a formal or informal survey to gather data, the protocol does not provide any technical guidance on survey methods. After a brief introduction on PACE-EH, CDPH’s assistance in implementing a rapid needs assessment called the Community Assessment for Public Health Emergency Response (CASPER) is discussed. The CASPER method was used in order to gather the community’s environmental health concerns that would be statistically valid and representative of the entire city.

CEHAT%20LOGO%202016Building a Community Air Monitoring Network Using Low Cost Sensors in South Gate

The South Gate Community Environmental Action Team (CEHAT) and the South Coast Air Quality Management District (SCAQMD) are collaborating on a project where SCAQMD provided the community of South Gate with air quality sensors to gain a better and more accurate understanding of air quality in South Gate neighborhoods. The sensors have been distributed to residents throughout the community to collect data on particulate matter (PM 2.5), ozone, and other air pollutants. Sensors are mounted outdoors and require a wireless internet connection. The local-scale data produced by these sensors are available online.

  • To learn more about how the South Gate CEHAT was formed, watch the video below ( 

Emerging Environmental Public Health Concerns

Click here for more information on engineered nanomaterials and public health

Engineered Nanomaterials: SAS is working to promote and encourage the safe development and use of engineered nanomaterials by raising awareness of the uncertainties associated with these materials. Visit our Engineered Nanomaterials webpage ( for more information. 


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