The purpose of the Resident Health Survey (Survey) is to understand residents’ short- and long-term health effects of the Aliso Canyon disaster among people living in proximity to the blowout.

The Survey includes questions about experiences with the blowout, environmental exposures, symptoms, and health conditions. The Survey will take about 30–40 minutes to complete.

2,000 people will be able to participate in the Resident Health Survey (1,400 from the area affected by the blowout, 600 from a comparison area). Only one adult per household that receives an invitation letter in the mail may participate.

• To be eligible from the affected area, the participating adult needs to have lived in the area during the 2015–2016 blowout.
• To be eligible from the comparison area, the participating adult needs to have lived in the Simi Valley area since 2015.
  

Participants who complete the Resident Health Survey will receive a $35 Amazon e-gift card.

Upon completing the Survey, 600 participants who opt in will be invited to undergo a Clinical Assessment (400 from the affected area and 200 from the comparison area).

What to expect

We will mail initial invitation letters to potential Survey participants. The recruitment letter includes: a direct link to complete the Survey online, a QR code, a contact number for support, and how to get in touch with the Study Team. We will send a follow up with two postcard reminders, two weeks apart.

Participants will be able to take the Resident Health Survey online or can contact us for assistance in completing the Survey by phone or in-person.

Confidential and anonymous data collected during the Survey will be used alongside other health and environmental study data, including Clinical Assessments, to understand the impact of the disaster.