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ACTION LEVEL RESPONSE TABLE (ALRT) INITIAL MONITORING Chemical or Safe Range Monitoring Action Level Protective Measures Material Methods Total Volatile <10 ppm OVM >10(sustained) Don air purifying respirator with (non-methane organic vapor cartridge. Continue hydrocarbons) monitoring at 15 minute intervals. Remove all non-essential personnel from the work area. Upgrade to Level C PPE with full respi- ratory, dermal, eye, and hand/foot protection. Implement chemical — specific monitoring for chemical delineation and PPE selection verification. Establish contamination control zone. — Oxygen <19.5 % OX <19.5 °% Evacuate work zone for 15 minutes. Assess condition of worksite for cause of deficit. Remonitor for oxygen — content and return only if > 19.5 %. Combustibles <20% LEL CGI >20% LEL Remove all ignition sources. Evacuate (sustained) work area. All non-essential personnel should remain outside work area until conditions deemed safe. CHEMICAL-SPECIFIC MONITORING Benzene <1.0 ppm Drager Tube >1.0 ppm PPE Level C; Ventilate and evacuate (confirmed at least work area for at least 15 minutes, two times) then resample. If levels still >1.0 ppm and <10 ppm, continue Level C PPE and monitoring. If level >20 ppm for 15 minutes, implement emergency response. Hydrogen Sulfide <10 ppm CGI >10 ppm PPE Level C; Ventilate and evacuate (confirmed) work area for at least 15 minutes, then resample. If levels are >11 0 ppm and <100 ppm, continue level C PPE. If level >300 ppm, implement emergency response. Vinyl Chloride <1.0 ppm Drager Tube >1.0 ppm(con- PPE Level C; Ventilate and evacuate firmed) work area for at least 15 minutes, then resample. If levels are >1.0 ppm and <10 ppm, continue level C PPE. If level >10 ppm, implement emergency response. ACKNOWLEDGMENT — I have read the attached health and safety plan for dated I have discussed any questions that I have regarding the plan with the Office Health and Safety Coordinator, and i Understand the requirements.