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Table 3 <br /> Task-Specific PPE Summary <br /> A downgrade in air monitoring and PPE level must be approved by the HSM. <br /> . . Task W—Instrument Frequency MA <br /> Project Oversight Level D N/A N/A <br /> Soil boring investigation Modified Photoionization detector During Intrusive work activities <br /> Level D-2 (PID)/Lower Explosive Limit <br /> (LEL)/OZ Meter <br /> Groundwater Sampling Modified PID/LEL/OZ Meter During Intrusive work activities <br /> Level D-2 <br /> Soil Vapor Sampling Modified PID/LEL/OZ Meter Periodically in breathing zone <br /> Level D-1 of employees <br /> General site duties,site setup, Level D N/A N/A <br /> perimeter air monitoring etc. <br /> N/A–not applicable <br /> Note:'Startup of work at each new task location"means to monitor the air quality at each new operation on the site. The <br /> breathing zone is the area inside a 1-foot radius around the head. <br /> 2.2.3 Air Monitoring Requirements <br /> Section 6.0 of the HASP provides information regarding air monitoring requirements, calibration <br /> requirements, and how to document air monitoring readings. Table 4 provides a summary of the <br /> requirements for this project site. <br /> Table 4 <br /> Air Monitoring Action Levels <br /> NOTE:EHS will add other screening instruments and action levels per site-specific requirements. <br /> PID(11.7 eV lamp)- Conduct air monitoring for 0-1 ppm Level D <br /> Measures Total volatile organic compounds 1-5 ppm Upgrade to Level C. Conduct sampling <br /> Organic Vapors during activities where for Vinyl Chloride. Coordinate with PM <br /> contaminated media are and HSM for guidance <br /> present. Make sure that a <br /> background reading is taken >5 ppm Stop work required. Leave work area, <br /> before the startup of activities contact PM and HSM for guidance <br /> and periodically thereafter. <br /> Oxygen/Combusti- Conduct air monitoring for 02=20.9% Acceptable <br /> meter Measures 02/LEL when conditions exist 02>19.5-20.8% Verify reasons for 02 depletion with <br /> oxygen level (02) where flammable vapors/gases appropriate air monitoring <br /> and LEL and/or oxygen deficiency or instrumentation before work <br /> enrichment can occur. continues. Utilize appropriate <br /> engineering controls/PPE once <br /> A decreased 02 reading of 0.1% atmospheric contaminants have been <br /> (e.g., 20.9%to 20.8%)actually verified. <br /> represents a change in the 02>20.9%-22 Verify reasons for 02 enrichment <br /> 2-4 <br />