Last week I ran into a contractor who was repairing concrete using a 2 part epoxy in a water reservoir. He had a traditional 4 gas monitor operating inside and was wearing particulate respirators for the dust (silica) hazard. However nothing was protecting the workers from the ethylene glycol, one of the main components in both parts of the epoxy. The lack of knowledge (both the supervisor and the Attendant) regarding the ethylene glycol translated into no protection from the acid gases released during the mixing and curing process.
