Health Hazard Evaluation Interim Report 9, December 7, 2010 Interim report reissued December 2012: front and back covers, lead and contributing authors, and acknowledgments were added to the original interim report. On May 28, 2010, the National Institute for Occupational Safety and Health (NIOSH) received a request from BP for a health hazard evaluation (HHE). The request asked NIOSH to evaluate potential exposures and health effects among workers involved in Deepwater Horizon Response activities. NIOSH sent an initial team of HHE investigators on June 2, 2010, followed by additional teams. This letter is the ninth and last in a series of interim reports. As this information is cleared for posting, we will make it available on the NIOSH website (www.cdc.gov/niosh/hhe). We will be producing a final report that pulls together all work done by the NIOSH health hazard evaluation program during the Deepwater Horizon Response. This report (Interim Report #9) includes several discrete components of our investigation. For each, we provide background, describe our methods, report the findings, and provide conclusions and, where appropriate, interim recommendations. The components included in this report are as follows: • 9A – Results of Bulk Sample Collections 9B – Health Symptom Survey Findings for Response Workers Assigned to Plaquemines • Branch Incident Command System, Louisiana, June 2010 • 9C – Assessing Psychosocial and Work Organization Issues among Deepwater Horizon Response Workers in Venice, Louisiana, August 2010

Stephen B. Thacker CDC Library collection