Specification
Version: 1.0 
Revision Date: 03/28/2016 
000000023904 
6/19 
(Quartz)/ Silica Sand - 
Respirable. 
millions of 
particles 
per cubic 
foot of air
1910.1000) (2000) 
  TWA 
  0.1 mg/m3 US. OSHA Table Z-3 (29 CFR 
1910.1000) (2000) 
Crystalline Silica 
(Quartz)/ Silica Sand - 
Total dust. 
TWA    0.3 mg/m3 US. OSHA Table Z-3 (29 CFR 
1910.1000) (2000) 
Chemical name  type  Exposure Limit Values Source
Diisodecyl phthalate   TWAEV    5 mg/m3 Canada. Ontario OELs. (Control of 
Exposure to Biological or Chemical 
Agents) (11 2010) 
Calcium Carbonate 
(Limestone) - Total 
dust. 
STEL    20 mg/m3 Canada. British Columbia OELs. 
(Occupational Exposure Limits for 
Chemical Substances, Occupational 
Health and Safety Regulation 296/97, 
as amended) (07 2007) 
  TWA    10 mg/m3 Canada. British Columbia OELs. 
(Occupational Exposure Limits for 
Chemical Substances, Occupational 
Health and Safety Regulation 296/97, 
as amended) (07 2007) 










