Document ByMv7wjp484L2yQRjznL6E3Dk

Page 3131 1 A When I calculated, it was just slightly over 2 0.1, about .11 fiber per cubic centimeter on a time3 weighted average basis. 4 Q Okay. So this would be the time-weighted 5 average then? 6 A If one did that 22 minutes once a day, yes. 7 Q Of course, that requires you to make some 8 assumptions? 9 A Yes, sir. 10 Q Dr. Weir, as an industrial hygienist and 11 toxicologist, do you have an opinion to a reasonable 12 degree of scientific certainty as to whether exposures 13 in that range like we just calculated would be harmful 14 to humans? 15 A Yes, sir, I have an opinion. 16 Q And what is your opinion? 17 A There is no basis in the medical literature, 18 no basis in the medical science theory, and no basis 19 even in administrative regulations to support that 20 those levels will either cause or contribute to any 21 disease process.