The labs in this high school building do not have self-closing doors because of life safety recommendations and faculty preference. Chemicals are only used during lab period and secured in a locked prep room (which does have self-closing doors) at other times. The labs are negatively pressurized and have deck-to-deck partitions. When labs are over, students move to adjacent classrooms where no chemicals are used. Given these considerations, do you think we could be exempt from the self-closing door requirement for the labs only?