What should I do if hazardous substances levels exceed safety limits?

If the levels of substances go beyond the limits, at your workplace and wish to tackle the situation effectively.
Consider halting work temporarily.
Equipping your employees with protection until you can swiftly address the issue at hand.
Review your existing control measures to understand the reasons, behind their failure and explore ways to enhance them for outcomes.
Take steps to add better safeguards, in place to lower the levels of exposure, below the limits.
Make sure to check the air quality to confirm that the new safety measures are effective.
Ensure that the staff undergo retraining regarding protocols and implementation of safety measures.
Always keep in mind that the important goals are safeguarding the well being of workers and swiftly reducing exposure levels to a state. If necessary for a safe resolution of the issue promptly seek assistance, from experts.