Determine the dose in percentage of the worker who has noise exposed to the workstation in food production company. The first 2.5 hours, he was working at the filling section at a noise level of 97 dBA, the next 1 hour he was monitoring the capping process at a noise level 102 dBA. After the capping monitoring, he went to the label room to help for the labelling process for 2.5 hours at a noise level 99 dBA. The last 2 hours, he serviced the packaging machine at a noise level of 92 dBA. (Refer to Appendix B for Permissible Exposure Limits (FMA 1967))

(b)

Justify TWO (2) engineering methods and ONE (1) non-engineering methods to reduce the health impact to the worker who are working in food production company in question Q3(a). pleas i need answers as soon as possible this subject is environmental engineering