sentences:  The assessment must also consider any occupational exposure limit, in particular, those mandated by the HSE (reg.6(2)(f)) or by the workplace activities 
  
  Regulation 7 requires that an employer prevent exposure to hazardous substances or, if this is not reasonably practicable, that he adequately controls exposure.One of the main points of the COSHH risk assessment is to identify the measures that are to be used to avoid a hazard or reduce the level of risk associated with a hazard.Employers must ensure that exposure to hazardous substances is prevented or, if this is not reasonably practicable, adequately controlled.