The structure itself looks good, but you're kind of lacking detail. What manner of pumping station is it? Are we talking industrial, or more like a fueling station for vehicles? If the latter, then maybe some actual pumps would be in order. In either case though, I think it would really take off if you had some street lines, either for parking or something like that (The white zone is for loading and unloading only.), maybe if nothing else the edge of the road nearby. If you don't want to go that route, maybe a fence around it?
It's a good start though.