Silica Submission 1189
Job Description
Drilled 23 holes 1/4" diameter into concrete at ground level
Type of Work
Drilling
Control Methods
Natural Ventilation
Sampling Type
Area Sample (5'-10')
Environment
Indoors (limited flow)
Lab Report ID
17101090-02
Total Sample Time
510minutes
Webform Submission
Sampling Results RCS
4
Time Weighted Average
4.25
Base Material
Concrete
Submission ID Only
1189
Matching Base Material
Concrete
Matching Type of Work
Drilling