NRS 393.405: Use of diisocyanate in maintenance or repair of building owned or operated by school while certain persons are present; penalty.

1. It is unlawful for a person who knows or in the exercise of reasonable care should know that a substance or material contains at least one-tenth of 1 percent by weight or volume of a diisocyanate to use, or cause or permit another person to use, the substance or material in the maintenance or repair of a building owned or operated by a school district while any person who is not necessary to the maintenance or repair is present in the building.

2. A person who knows or in the exercise of reasonable care should know that a substance or material which contains at least one-tenth of 1 percent by weight or volume of a diisocyanate has been used in the maintenance or repair of a building owned or operated by a school district shall ensure that the building is not occupied for at least 4 hours following the use of that substance or material by any person who is not necessary to the maintenance or repair.

3. A person who violates subsection 1 or 2 is guilty of a gross misdemeanor.

4. For the purposes of this section, “diisocyanate” includes, without limitation, toluene diisocyanate (TDI), methylene bisphenyl isocyanate (MDI) or hexamethylene diisocyanate (HDI).