NCCER Glazier Practice Questions - NCCER Glazier Certification (4-Level, ~680 Hours) Exam

OSHA's respirable crystalline silica PEL for construction is?

50 µg/m³ as an 8-hour TWA 500 µg/m³ as a ceiling 5 mg/m³ as an 8-hour TWA 1 mg/m³ as a 15-min STEL

Correct Answer:

50 µg/m³ as an 8-hour TWA

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