(1) Top management: Patrol at least once per month during Environment Month or through the Environmental
Secretariat of the relevant plant, etc.
(2) Environmental Secretariat: Each company refers to the following "recommended frequency" to set its own
frequency according to the predicted environmental risks and area of influence, plant's location conditions (land
classification, local circumstances), etc. In addition, each company sets its own patrol time according to the
form of operation. If there is no night shift, they may omit patrolling at night.
Frequency of patrol at TBJ plants