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Preventing heat stress is particularly important because once someone suffers from <br /> heat stroke or heat exhaustion, that person may be predisposed to additional heat <br /> injuries. To avoid heat stress the following steps shall be taken whenever the ambiant <br /> temperature is over 80 °F• <br /> 1) Field personnel shall have a work/rest cycle of 2 hours work, 15 minutes rest. <br /> 2) The Site Safety Officer shall mandate work slowdowns as needed. <br /> IV. JOB HAZARD SUMMARY <br /> In summary, the expected potential hazards to personnel working in the work area are <br /> (Check all that apply): <br /> (1) Over exposure to chemical contaminants <br /> (2) Physical injury from equipment being operated at job site <br /> (3) Public traffic <br /> (4) Hot surfaces ❑ <br /> (5) Heat stress 13 <br /> (6) Fire 0 <br /> (7) Electrical shock ❑ <br /> (8) Other ❑ <br /> As described in Section III - Job Hazard Analysis, these potential hazards have been <br /> mitigated for the protection of both the worker health and safety. The proposed work <br /> does not appear to present any potential health risk to workers, the surrounding <br /> community, or the environment. <br /> V. EXPOSURE MONITORING PLAN <br /> Periodic monitoring for organic vapors is is not ❑ required. The Site Safety <br /> Officer shall monitor the ambient air in the work area with an organic vapor <br /> photoionization meter (Thermo Environmental Model 580B OVM, or equivalent) <br /> should their presence be detected by odor. If the meter indicates petroleum <br /> hydrocarbon concentrations in the area exceed 300 ppm, the Site Safety Officer shall <br /> require personnel in the work area to wear respirators with organic vapor cartridges <br /> (MSA 464046, or equivalent) <br /> The manufacturer's calibration procedures for the Model 580B OVM are located within <br /> the instrument case Field calibration shall be performed daily during use. <br /> 7-237 8 11/22/93 <br />