A Labor Department lawsuit on behalf of a medical lab tech whistleblower was settled March 12.

Biologist Daniel R. Carr worked as a medical laboratory technician for Jardon & Howard Technologies Inc. from September 2007 to Dec. 8, 2014, at the National Oceanic and Atmospheric Administration’s Pivers Island facility.

On Dec. 4, 2014, Carr emailed NOAA’s team leader, Jennifer Potts, about his safety concerns regarding an algae bloom laboratory being moved to his hallway. The hallway was equipped with a...