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U.S. SILICA COMPANY <br />Safety Data Sheet <br />Silica Sand or Ground Silica Page 3 of 9 <br />Date of preparation/revision: May 4, 2015 <br /> <br />Where necessary to reduce exposures below the PEL or other applicable limit (if lower than the PEL), wear a <br />respirator approved for silica containing dust when using, handling, storing or disposing of this product or bag. <br />See Section 8, for further information on respirators. Do not alter the respirator. Do not wear a tight-fitting <br />respirator with facial hair such as a beard or mustache that prevents a good face to face piece seal between the <br />respirator and face. Maintain, clean, and fit test respirators in accordance with applicable standards. Wash or <br />vacuum clothing that has become dusty. <br /> <br />Participate in training, exposure monitoring, and health surveillance programs to monitor any potential adverse <br />health effects that may be caused by breathing respirable crystalline silica. The OSHA Hazard Communication <br />Standard, 29 CFR Sections 1910.1200, 1915.1200, 1917.28, 1918.90, 1926.59 and 1928.21, and state and local <br />worker or community "right-to-know" laws and regulations should be strictly followed. <br /> <br />DO NOT USE U.S. SILICA COMPANY SAND OR GROUND SILICA FOR SAND BLASTING <br /> <br />Conditions for safe storage, including any incompatibilities: Use dust collection to trap dust produced <br />during loading and unloading. Keep containers closed and store bags to avoid accidental tearing, breaking, or <br />bursting. <br /> <br />8. EXPOSURE CONTROLS / PERSONAL PROTECTION <br /> <br />Exposure guidelines: <br />Component OSHA PEL ACGIH TLV NIOSH REL <br /> <br />Crystalline Silica (quartz) <br /> 10 mg/m3 <br />%SiO2 + 2 TWA <br />(respirable dust) <br /> 30 mg/m3 <br /> %SiO2 + 2 TWA <br />(total dust) <br /> <br />0.025 mg/m3 TWA <br />(respirable dust) <br /> <br />0.05 mg/m3 TWA <br />(respirable dust) <br /> <br />If crystalline silica (quartz) is heated to more than 870°C, quartz can change to a form of crystalline silica <br />known as tridymite; if crystalline silica (quartz) is heated to more than 1470°C, quartz can change to a form of <br />crystalline silica known as cristobalite. The OSHA PEL for crystalline silica as tridymite or cristobalite is one- <br />half of the OSHA PEL for crystalline silica (quartz). <br /> <br />Appropriate engineering controls: Use adequate general or local exhaust ventilation to maintain <br />concentrations in the workplace below the applicable exposure limits listed above. <br /> <br />Respiratory protection: If it is not possible to reduce airborne exposure levels to below the OSHA PEL or <br />other applicable limit with ventilation, use the table below to assist you in selecting respirators that will reduce <br />personal exposures to below the OSHA PEL. This table is part of the NIOSH Respirator Selection Logic, 2004, <br />Chapter III, Table 1, “Particulate Respirators”. The full document can be found at <br />http://www.cdc.gov/niosh/topics/respirators/; the user of this SDS is directed to that site for information <br />concerning respirator selection and use. The assigned protection factor (APF) is the maximum anticipated level <br />of protection provided by each type of respirator worn in accordance with an adequate respiratory protection <br />program. For example, an APF of 10 means that the respirator should reduce the airborne concentration of a <br />particulate by a factor of 10, so that if the workplace concentration of a particulate was 150 ug/m3, then a <br />respirator with an APF of 10 should reduce the concentration of particulate to 15 ug/m3. In using chemical <br />cartridges, consideration must be given to selection of the correct cartridge for the chemical exposure and the <br />maximum use concentration for the cartridge. In additional a cartridge change-out schedule must be developed <br />based on the concentrations in the workplace.