Exposure Monitoring

Potential exposures include, but are not limited to, nuisance dust, chemical vapors, hazardous materials (such as lead) and noise. The Contractor should take all necessary precautions to control or contain fugitive emissions from the job site.

• Employee exposures to airborne hazardous substances must be maintained below OSHA permissible exposure limit (PEL), found in 29 CFR 1910.1000 Table Z, or American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value (TLV) for any chemical.

• Where engineering controls will not adequately control exposures or are not feasible, and the potential exists to create air concentrations in the work area above the PEL or TLV, work area exposure conditions should be monitored. Monitoring should occur, at a minimum, during the start of work and whenever there is a change in procedure, process, or chemical or material used.

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