Personally, I do not believe she is within any construction area (under concrete), unless she fell into an open area, and was covered up inadvertently. My reasons:
1. I think that whatever happened wasn't premeditated (unless it was tied to a DD, who may have wanted to shut up her comments which may have been stated at Kilroy's. Therefore, if not premeditated, I'd think they'd want to get her body as far away from campus as possible. To me this idea also rules out dumpster - IMO it's just too much of an obvious place to hide a body and (usually) has too much risk of being discovered.
2. While there was certainly construction ongoing, I think that most college kids are oblivious as to exactly what is going on. I simply don't believe most would be aware that a certain area was being prepped for concrete and most wouldn't even know what rebar is. Now, it's been said that one of the POI's may work in construction, so that could lead towards a different opinion.
3. Even if the kids were completely sure that a certain area was going to be covered up the next day, I think it still lends itself to too much risk. We're talking fairly open area in the street or sidewalk, right? If it's within a building site, then maybe. I understand that it was very early in the AM but still - someone could have seen them. It would have been pretty odd to observe a boy carrying a sleeping bag (or suitcase, garbage can or bag, etc.) into a construction site.
IMO Lauren is located in an area at least fairly familiar (if not very familiar) to one or more of the POIs. This could be as close as a nearby woods or lake, or as far away as MI (or somewhere along the way). Because I don't feel that this was premeditated, I think there was likely a LOT of fear involved. Therefore, I just don't think these boys would add to that fear by accepting more risk of possibly being seen. I think they'd wrap her up and get the heck outa there.
