Sounds like you may have found your little slice of Heaven! I did a short stint there some time ago and what a wild ride it was! Back then, management preferred to deal with the concequences of an evolution, instead of any associated probabilities. ANY information offered by a tech, was considered resistance to their process, Non- Productive! It was better to just sit back and clean up the mess, when they were done. At the time, there was one tech, who wanted to nuke everything out and proceduralize the world. I think he produced the Power Plant Tag, they speak about today. As you said, it isn't a power plant!
As far as the Radiological aspect of the place, no Big Deal! As far as other hazards, watch your six! They receive waste from all sectors of the industry, medical, research, experimental, fabrication and your guess is as good as mine! After you pop the lid on a couple of packages and see what rolls out, that's when you should make your final decision. Other than a simple radiological characterization, it's just a guessing game! The place really needed a hands on, diversified waste specialist. Someone who could tell you what items didn't mix well with others! Someone who could tell you what items dont agree with a cutting torch! What is that odor coming from that drum? Incidental things like that!
I wish you a world of Luck, then some!
RG