1) In any case in which -

a) it is requisite for ensuring the maintenance of adequate control of the exposure of employees to substances hazardous to health; or

b) it is otherwise requisite for protecting the health of employees,

the employer shall ensure that the exposure of employees to substances hazardous to health is monitored in accordance with a suitable procedure.

2) Where a substance or process is specified in column 1 of Schedule 4, monitoring shall be carried out at least at the frequency specified in the corresponding entry in column 2 of that Schedule.

3) The employer shall keep a suitable record of any monitoring carried out for the purpose of this regulation and that record or a suitable summary thereof shall be kept available -

a) where the record is representative of the personal exposures of identifiable employees, for at least 40 years;

b) in any other case, for at least 5 years.

Section Index