Section 325.51155. Exposure monitoring; initial determination.

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(1) An employer who has a workplace or work operation that is subject to these rules shall perform initial monitoring to accurately determine the TWA and STEL airborne concentrations of EtO to which an employee may be exposed.

(2) Any measurements of airborne EtO concentrations that are determined after June 15, 1983, may be used to satisfy the requirement to monitor specified in subrule

(1) of this rule, if the sampling and analytical methods that are used meet the accuracy and confidence levels required by R 325.51157.

(3) If an employer has previously monitored for the STEL by sampling and analytic methods that meet the accuracy and confidence levels of R 325.51157, the employer may rely on the monitoring results to satisfy the requirements of subrule (1) of this rule.

History: 1988 AACS; 1993 AACS.

                    
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