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JAN -OG -2000 12'40 P.07 <br />Sunburn. Working outdoors on sunny days for eldended periods of time can cause sunburn too <br />the ska Excemve exposure to sunlight is associated with the development of skin cancer. Field <br />staff should take precautions to prevent sunburn by using st lotion and/or wearing hats <br />and long-sleeved garment. <br />Rest Stftm The potemial for beat stress is a concern when field activities are perfortmd on <br />wm-M sunny days, and is acne tmted when chemical protective cloffrin is worm: Heat stress <br />prevention mewures and moriitoring will be inVIetnented if site temperatures are above 70 <br />degrees Fabrenheit (F). <br />Precautions to prevent heat stress will include work/rest cycles so that rest periods am taken <br />before excessive fidgue occurs, and regular intake of water to replace that lost from sweating. <br />WorWrest cycles will be based on monitoring the heart rate (pulse) of each individual worker. <br />Reg breaks wM be long enough to reduce the heart rate (HR) below levels calculated according <br />to tne 101town Ire twas. <br />I . Tho worker will initiaUy determine thew resting HR prior starting work activities. <br />2. At the start of the first rest period the worker -will determine their YA> This filitial Hk <br />should not exceed the kdhidual's age-adjusted maximum M which equals [(O.-IX220- <br />age in yews)]. At I minute into the rest period, the recovery Hk %,M be determined. The <br />recovery Hr 3hould not exceed I 10 beats per minute. <br />the kitial HR exceeds the age-aditioed. maxinu= HK or the I -minute recovery HR is <br />greater than I 10 beats per minute, then the next work period will be decreased by 10 <br />minutes. <br />Heat stress due to water loss can be prevented. To prevent dchydraTion, water must approxfimtL <br />sweat loss. Water irttalte guidelines are as follows: <br />The sense of dkv is not an adequate regulator of water replacamm -needs during heat <br />'bed <br />exposure. TherefDre, water must be repLwed at prescri intervals, <br />1;111��Iiir <br />2. phdn wateT, served COOL is excellent. An adequate supply of potable water and drinking <br />cups will be readily available, such as in a support vehicle, to provide water dw-ing rest <br />periods. <br />3. Adding alt to water is not recommended. However, other flUidS, in addon to water, <br />could Include dilute ftuit juices and electrolyte Mlacement drinks- Muted 3:1 with water. <br />Do = use sak tablets! <br />1 <br />