The location consists of ruins from a partially destroyed building. Irradiated puddles can be seen in the lowest level of the building where the hazmat suit can be obtained. The whole building is irradiated, and approaching it will result in 1 rad per second.
The hazmat suit and hazmat darklight cowl is located in a pod near the bottom-most accessible floor. It must be unlocked with either the security code from the Z-43 innovative toxins plant or by using the upgraded sonic emitter to disable the force field.
Sometimes, even with the access code and/or the sonic emitter, the shield will still not lower to allow access to the hazmat suit. [verified]