When dealing with monitoring materials or substances there is paperwork that needs attention for sure; it's crucial to maintain accurate records of the monitoring tasks you perform to ensure safety measures are, in place and effective results are achieved. If you're conducting air monitoring or biological monitoring for employees’ safety measures in place, at least for 40 years. Yes indeed quite a lengthy period of time to uphold those records! Remember to review the monitoring data to identify any patterns or potential concerns that may arise over time or the workplace regulations being surpassed; prompt action is necessary in instances for ensuring a safe working environment and well being of all individuals, in the long term.