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SECTION 3.0 JOB HAZARD ANALYSIS <br /> 3. 1 GENERAL BACKGROUND <br /> Work conditions can be expected to vary during the course of the project. These conditions may <br /> require modification of the plan to optimize employee protection. As appropriate, addenda will <br /> be provided by the Project Manager/Safety Officer. With the exception of an emergency <br /> situation, no changes to this plan may be implemented without the prior approval of the Project <br /> Manager/Safety Officer. At least one copy of this plan shall be available at the work site at all <br /> times. <br /> 3.2 HEAT STRESS <br /> Adverse climatic conditions (both heat and cold) are important considerations in planning and <br /> conducting site operations. Ambient temperature effects can include physical discomfort, <br /> reduced efficiency, personal injury and increased accident probability. <br /> Heat stress is of particular concern due to the prevailing climactic conditions in California. All <br /> appropriate procedures regarding heat stress shall be met. Additionally, one or more of the <br /> following control measures can be used to help control heat stress: <br /> 1. Provisions of adequate liquids to replace lost body fluids. Employees must <br /> replace water and salt lost from sweating. Employees must be encouraged to <br /> drink more than the amount required to satisfy thirst. Thirst satisfaction is <br /> not an accurate indicator of adequate salt and fluid replacement. <br /> 2. Establishment of a work regimen that will provide adequate rest periods for <br /> cooling down. This may require additional shifts or workers. <br /> 3. Cooling devices such as cooling vests can be worn beneath protective <br /> garments. <br /> 4. All breaks are to be taken in a cool, shaded area (77 degrees Fahrenheit is <br /> ideal). <br /> Indications of heat stress include: <br /> • Excessive sweating <br /> • Pale moist skin <br /> • Complaints of dizziness <br /> 0 Pain or muscle spasm <br />