Section 393.405 - Use of diisocyanate in maintenance or repair of building owned or operated by school while certain persons are present; penalty1. 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).Added to NRS by 1997, 3352Added to NRS by 1997, 3352