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IAAPCADIS <br /> Silica Exposure Control Plan <br /> Project Name: Forward Landfill Manteca, CA <br /> Project Number: 30167676 <br /> Date: 7/3/2023 <br /> Task Description: <br /> Site walks, utility locates, drilling, well installation/destruction/development, soil/groundwater sampling. <br /> 1) Arcadis Silica Competent Person: Shawn Roberts Phone: 913-515-2070 <br /> The above individual will ensure requirements stipulated in this plan are implemented and has the authority to <br /> take corrective measures and/or revise this plan to ensure employee, contractor and/or public exposure to silica <br /> dust remains below the respirable inhalation time weighted average action level of 25 µg/m3 over an 8-hour <br /> period. <br /> 2) What material will the team be working with on this project? <br /> Sand <br /> 3) The following work activity will be performed on this project which have a potential for silica dust exposure: <br /> Mixing/pouring <br /> The following controls will be utilized to mitigate exposure to silica dust hazards: <br /> Based on the activity entered above, the following OSHA/Arcadis activity category is: <br /> Arcadis regulated activity <br /> 4) The controls to be utilized include: <br /> Reasonable care will be taken to control visible dusts and wetting will be the preferred method to control dusts. If <br /> wetting cannot be utilized, the Arcadis competent person will design and implement engineering and <br /> administrative controls to mitigate the dust hazard prior to directing use of respiratory protection. <br /> 4a) Respiratory Protection: <_4 HRS >4HRS <_4 HRS >41-IRS <br /> Indoors or Enclosed Area: I None None Outdoors: None I None <br /> The Arcadis competent person may require 10 APF respiratory protection based on data and observations <br /> available. <br />