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Arcadis Heat Illness Prevention Plan (HIPP) <br /> HASP Supplement <br /> Monitoring of Weather and Heat Index Table Continued <br /> Heat Index Action Levels. Below are recommended additional controls. Each level <br /> of additional controls is additive as the temperature increases. <br /> CAUTION 80° - 90° F (26° - 32° C). Implement one or more of the following measures: <br /> Provide and direct hydration, schedule breaks, ensure lightweight clothing is worn, provide break <br /> areas with shade/ventilation/air conditioning. <br /> EXTREME CAUTION 90° - 105° F (32° - 40.5° C). Implement all the previous and add <br /> one or more of the following: Provide light duty PPE, cooled break areas, shaded work areas. <br /> NOTE: "Light Duty PPE" includes hard hat sun shades, sun hats, dry or wet evaporative cooling <br /> vests, microfiber cooling towels/scarves/headbands/ hard hat suspension inserts or <br /> sweatbands, hard hat neck shades. <br /> DANGER 105 ° - 130 ° F (40.50 - 54.4° C). Implement all the previous and add one or <br /> more of the following: cooled work areas, modified work schedule, heavy duty PPE, and <br /> personnel physiological monitoring. <br /> NOTE: "Heavy Duty PPE" phase-change cooling vests, gel pack or ice pack equipped cooling <br /> vests. Consider engineering controls such as forced ventilation. <br /> EXTREME DANGER > 130° F (> 54.4° C). If working at this temperature or greater Stop <br /> Work until conditions change or hazards are effectively controlled via the items listed above. At this <br /> range of temperatures it is critical to implement personnel vital sign monitoring for determining the <br /> appropriate frequency and duration of Work/ Rest cycles. <br /> Work / Rest Cycle Duration and Frequency Process <br /> All workers, regardless if they are wearing permeable or impermeable clothing, should <br /> be monitored when conditions warrant e.g., when temperatures exceed 80°F / 26.6°C. <br /> If impermeable clothing is worn (e.g., not standard cotton/synthetic work clothes), it is <br /> a best practice to begin monitoring workers when temps are > 70°F in the work area. <br /> Prioritize workers completing strenuous tasks. Prioritization should also apply to work <br /> conducted indoors, for strenuous tasks, and/or if additional PPE is worn (such as <br /> Level C respiratory protection or(CPC). If impermeable clothing, Level C, or CPC is <br /> not worn, follow the Heat Index table instructions and evaluate personnel monitoring <br /> as part of the high heat measures. Details provided below for appropriate work/rest <br /> cycle development with the default rest cycle being a 15-minute interval for every hour <br /> Whan fmmnarnfiirac axranrl Qn,p <br /> NOTE: Warning signs include: When a person's sustained (e.g., several minutes) <br /> heart rate exceeds 180 beats per minute (bpm) minus their age (e.g., 180 - age =X) <br /> for individuals with normal cardiac performance per their physician; or a body core <br /> temperature exceeds 101.3°F/38.5°C for acclimatized workers or 100°F/38°C for <br /> unacclimated workers; a recovery heart rate at 1 minute after a peak work effort is <br /> greater than 120 bpm; or there are symptoms of sudden and severe fatigue, nausea, <br /> dizziness, or lightheadedness. <br /> Rev 8 13 June 2019 <br />