Oh boy...that's a major no-no....the (most) Health Dept would have a fit. That's a viloation. All medical/hazardous waste is supposed to be double bagged etc.etc...depending on your local laws. Someone was definately falling down on the job. Their dumpster should have been enclosed and CLOSED so nothing would blow out or attract rats etc. etc. No wonder the lady you talked to was ticked off...keep her number handy and any more stuff you see, call her again and call the Health Dept. Don't touch it (unless you use disposable gloves)...hope they get it under control, but it sounds like an employee got lazy.