To find out about the presence of existing hazardous materials, consult the site hazardous materials register available from the Manteena site team.
Hazardous substances you bring to site must be labelled as such, current (<5 yrs old) SDSs available, listed in a register and a risk assessment documented (eg in your SWMS, SOPs or register) and followed.
Use a less hazardous equivalent if possible. Bring as little as possible to site.