When we remodeled our kitchen we were required to have the materials that would be disturbed tested prior to obtaining permits. The things tested were things like drywall, wall texture, flooring etc. Our test came back positive. We did not have air quality testing done before the remodel, however. Our levels were just over the limit of 1% in the drywall joint compound and ceiling texture. This finding was devastating to us as we had remodeled 3 bathrooms DIY and had removed drywall as well as removing wall paper. We had the kitchen drywall completely removed and mitigated by a professional company. They had to get permits from the county for this work. This made me research the issue to see if we may have health problems. We have lived in this house for 16 years and we raised our teenagers in it. I am certainly no expert, but from what I read the safe exposure levels were extrapolated from high exposure level data. My dad told me that my neighbor when I was a kid died from asbestosis. From what my dad can remember, he worked for several years in his early 20s repairing industrial smokestacks which apparently are lined with nearly 100% asbestos. He was also a heavy smoker. The other thing I think about is that there don't seem to be people getting lung diseases that are caused by asbestos now-a-days. If it was a problem in your or my home, wouldn't home contractors be having problems. I just can't imagine that we have been exposed to problem levels of asbestos. I am sure that you are bummed out by this. Do you know what in your house might be the cause? What year was your house built? Asbestos was supposed to be phased out of building materials in the mid-to-late 70s, but the guy who did our testing said that they get positive samples even in newer homes (all houses getting remodeling permits have to tested in my county, regardless of age). He thinks products from China are the problem, but I don't know if he really knows that or not. I would not worry about it, but I think I would try to figure out what contains the asbestos so you can avoid disturbing more (it's ok as long as it isn't disturbed). What made you have the air tested in the first place? Do you know how your neighbors are going to react when your house is mitigated? The company that did ours said that it is sometimes a problem when the neighbors see the equipment and the hazardous waste bags. They were very discrete with an unmarked truck. If you are having your whole house cleaned, there might be more evidence on the outside of the house (I don't know this, just guessing). There were 2 decontamination chambers IIRC, a negative pressure tube going out a window, along with the bags of waste. They used plastic sheets to isolate the kitchen area, two walls of sheets I think. We didn't have any trouble with neighbors but I also didn't tell any of them. I hope I haven't worried you more - that was certainly not what I intended. I just wanted to tell you about our experience and give you some things to consider about living with it and mitigating it. Again, your levels are so low, I cannot imagine that there is any significant health risk. Best of luck to you.

Jane- Many people read about asbestos and get spooked, which sounds like what you have done. Don't get me wrong, asbestos is bad stuff; I know because I spent most of my career as an environmental engineer working in this area. However, in your case, I think it is unlikely you had any exposure from that work in the hallway. If they were removing asbestos insulation from old ducts and furnaces, or popcorn ceilings, then, yes. But just because they tore out what looks like a lot of old plaster and made a lot of dust means nothing. There may have been some lead dust in the air from the old paint, but that is a different story. As far as getting rid of your possessions, that's the uninformed panic talking...there is no need for that. (Even if there had been asbestos dust involved, a cleaning with an HVAC vacuum would have taken care of that, if it were necessary.) Please, you have been reading a bunch of scary stuff on the Internet and, having no background to properly assess the situation, have gotten upset. Take a deep breath and relax. Many people are ignorant of environmental risks and get into trouble unknowingly; in your case, you may be over-aware and too concerned about possibilities. I'm not trying to make light of your concern; I'm just trying to get you out of panic mode on this. It's fine and you will be fine.

I was an auto mechanic for several decades, coming into contact with asbestos dust on occasion(averaging once a month or so) for several years. Plus I was a smoker for 35+ years. I have had four CT scans of my lungs(am 69 years old) in the past two years---zero problems. No spots, no shadows, nothing. One doctor actually asked me if I really did smoke. No one in that house, to include your daughter is at risk.

Friable means "crumbling and falling apart". Don't sand it and inhale the dust, don't let the kids chew on the bits. "The sheet flooring had a burlap/jute backing but no padding or anything underneath" ... sounds like old style "linoleum", which was jute covered with many layers of linseed oil mixed with a filler, and then printed with a design.