Abstract: On May 6, 2005, Employee #1 was at a jobsite, working for a construction company that had been contracted to conduct site work, build detention ponds, and install underground utilities such as the storm sewer. He was working in one of the junction pits. There, two incoming storm sewer lines were connected. Their combined flow exited in one 60-in. line and went to the detention pond. A plug had been installed in the exiting line (going into the pond), and the pit was pumped out so the work could be conducted. Employee #1 was in the pit holding a baffle in position while a coworker connected it to the exiting wall of the pit. A failure occurred with the plug, causing a explosive amount of compressed air to exit the pipe in the direction of the baffle. The baffle pushed Employee #1 into the 60-in. pipe directly in back of him. Immediately following the air blast, a tremendous amount of water flowed into the junction pit, washing Employee #1 around two 90-degree turns. His body was finally found approximately 150 feet from the original work area. He had been killed.