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�i PELITLV STEL IDHL <br /> Lead 0.1 mg/m3 jl <br /> Tetraethyllead 0.075 mg/M3 0.3 mglm3 40 mg/m3 $ <br /> .F <br /> Tetramethyllead 0.07 mg/m3 0.5 Mg/M3 40 mglm3 <br /> Benzene 10 ppm 25 ppm 2,000 ppm <br /> Toluene 100 ppm 150 ppm 2,000 ppm <br /> Ethylbenzene 100 ppm 125 ppm 2,000 ppm <br /> Xylene 100 ppm 150 ppm 101000 ppm <br /> I <br /> 3.3 HEAT STRESS i <br /> Adverse climatic conditions (both heat and cold) are important considerations ink planning and conducting site <br /> operations. Ambient temperature effects can include physical discomfort, reduced efficiency, personal injury <br /> ` and increased accident probability. <br /> Heat stress is of particular concern due to the prevailing climactic conditions:din California. Ail appropriate <br /> procedures regarding heat stress shall be met.:.Additionally, one or more of the following control measures can <br /> be used to help control heat stress: <br /> 1. Provisions of adequate liquids to replace lost body fluids. Employees must replace water <br /> and salt lost from sweating. Employees must be encouraged to-,drink more than the <br /> amount required to satisfy thirst. Thirst satisfaction is not an accurate indicator of <br /> adequate salt and fluid replacement. (It is important to note, however, that ingestion of <br /> liquids will not be permitted in the contaminated zone. Workers should go to the break <br /> room to obtain the necessary liquids.) <br /> ry <br /> 2. Establishment of a work regimen that will provide adequate rest periods for cooling down.. <br /> This may require additional shifts or workers. <br /> 3. Cooling devices such as cooling vests can be worn beneath protective garments. <br /> 4. All breaks are to be taken in a cool, shaded area (77 degrees Fahrenheit is ideal). <br /> Indications of heat stress include: <br /> o Sweating <br /> o Pale moist skin <br /> o Complaints of dizziness / <br /> o Pain or muscle spasm <br /> Personnel monitoring is recommended above 80 degrees Fahrenheit (i.e., heart rate, oral temperature, body <br /> weight loss, blood pressure etc.). Use NIOSH guidelines for monitoring intervals. <br /> The following climatic conditions may warrant site closure: <br /> o Electrical storms <br /> o Wind velocity above 15 miles per hour if dust control is not feasible <br /> o Excessive heat <br /> i <br /> o�; I <br />