(1) Without prejudice to the inspection procedures provided under the Convention and relevant provisions in facility agreements, a Pesticides and Toxic Chemicals Inspector and an OPCW inspector may enter a facility and exercise any inspection power for the purpose of conducting a routine international inspection or an international challenge inspection, if—
(a) the inspector shows proof of identity and the occupier of the place consents; or
(b) a warrant is issued under section 53 authorising the inspection.
(2) In addition to their inspection powers, the Pesticides and Toxic Chemicals Inspector or the OPCW inspector may install and operate, at the facility, continuous on-site monitoring equipment that is approved by the OPCW, if the inspector believes on reasonable grounds, that this can be done in accordance with safety procedures applicable at the facility.
(3) As soon as practicable after completing the inspection, the Pesticides and Toxic Control Inspector shall give the person in charge of the premises or facility, and if there is none, an occupier of the place, a written notice stating that the place has been entered, and specifying the following—
(a) the time and date of entry;
(b) the circumstances and purpose of entry;
(c) the name of every person who entered.