This makes me think they're (SGC) is going to have to build a portable structure they can dis/assemble as needed to get through the gate and provide what's needed here. At least until they can seal and decon a suitable native structure. There is equipment like this already, but I'm betting they'll want to make sure it's sufficiently robust for SGC missions. Most are going to be lightweight and flimsy.
Actually, they'll need something like this,
M93A1 / M93A1P1 Fox NBC Reconnaissance Vehicle - Army Technology (army-technology.com) Just sized for Stargate use. Maybe kitbash all the testing equipment onto one of the tracked RPVs they use in the show in the short term. This is really a solid thing they'll want for a planet like this b/c it will give them greater range to explore. Honestly, if they can create a sealed environment AROUND the exit/entrance side of the other Stargate and decon it...that would make life a LOT easier. Then you don't have to hold up SGC ops in Colorado every time a suited team comes back because you have to decon EVERYTHING on the Earth side of the gate.