Document hazardous chemicals in use.
(a) 30 years for inventories and lists, inluding the locations and years of the use of the chemicals documented, purge;
(b) as soon as chemicals no longer in use for related safety data sheets, purge.
Exception: In the event of a subpoena, audit, legal hold, public records or similar state or federal information request, halt until further instructed any scheduled disposal activities, including purging or transferring material to University Archives.