Monitoring exposure at the workplace
10.—(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 5, 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.