Doug,
IMHO if this is a new installation, then a drawing sign and sealed by a lic. engineer would tell you if the area is a haz location or not. If this is just an add on electrical install and there are no prints, then I would talk it over with my local fire sub code or fire prevention person and get an answer from them. As Ryan pointed out, some of those materials look like they should be in a Haz. location and if I were doing the electrical work, I would make sure that I did all my work as per the right NEC sec. (Class 1, 2 or 3)
