Sch 2 para 17 Minor changes to types and quantities of substances
The conditions are— (a) that before the relevant minor change occurs, the hazardous substances authority receives from the COMAH competent authority, notice in writing, which must be copied by the COMAH competent authority to the person in control of the land to which the hazardous substances consent in question relates, confirming— (i) details of the relevant minor change, including details about how substances are to be kept and used; (ii) that the relevant minor change will not result in a safety hazard change; and (iii) that the relevant minor change will not result in a lower-tier establishment becoming an upper-tier establishment or vice versa; and (b) that any hazardous substances that are held without hazardous substances consent in reliance on this exemption are kept and used in accordance with the details set out in the notice from the COMAH competent authority.