Abstract: At approximately 2:30 p.m. on July 9, 2012, Employee #1, a 33-year-old male foreman with Pinnacle Plastering Inc., of a ten-worker crew, who was spraying stucco on new single family two story homes in Simi Valley. Employee #1 was the foreman and only sprayer on the job site that day. Employee #1 was wearing two pairs of pants, three-shirts plus a shirt over his head while spraying. Employee #1 started having numbness in his hands and feet about 2:30 p.m. and went to get into the shade. The crew finished the job; Employee #1 still didn't feel well and had someone call Emergency Medical Services. Employee #1 was taken by ambulance to Simi Valley Advent Hospital Emergency Room at 7:11 p.m. where he was diagnosed with dehydration, elevated creatinine and heat exhaustion. Employee #1 was discharged at 8:56 p.m. and told to follow up with his personal physician if not feeling better in two or three days. Interviews were conducted of the crew employees and other workers. It was reported to OSHA that Employee #1 had drank approximately two-gallons of Pedialyte, Coke, Gatorade, monster energy drinks and water prior to 2:30 p.m. The weather hit a high of Eighty-six degrees Fahrenheit with relative humidity of around twenty-six percent. The employer, Pinnacle Plastering Inc., is a lathing and plastering contractor which employs between 125 to 150 employees.