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10. Tools and hands must be kept away from the face. 11. Personnel must shower at the end of the shift or as soon as possible after leaving the site. 12. Each sample must be treated and handled as though it were extremely toxic. 13. Tank pit excavations must be sampled cautiously, using a remote sampling device or securing samples from excavated soil, and the pit should be centered only as a last resort. The pit may meet the criteria for a confined space, in which case any entry must be made in accordance with NIOSH recommended Confined space Entry Procedures. 14, persons with long hair and/or loose-fitting cothing that could become entangled in power equipment are not permitted in the work area. 15. HGrseplay is prohibited in the work area. 16. Working while under the influence of intoxicants, narcotics, or controlled substances is prohibited. 5.2 WorLK LIMITATIONS: Work shall be limited to daylight hours and during normal weather conditions. Extremes in temperature and weather condi'.ion wind and lightning) will reEtrict working b,.'irs. For monitoring the body's recuperative ability toward excess heat, the following to:hniques will be used as a screening mechanism. Monitoring of personnel wearing protective clothing will commence when the ambient temperature is 70 degrees Fahrenheit (°F) or above. When temperatures exceed 85°F, workers will be monitored after every work period. Monitoring will include visual observations for signs of heat stress and measurement of radial pulse rate for 30 seconds at the beginning of each rest period. If the heart rate exceeds 110 beats per minute (beats/min) at the beginning of a rest period, the next work period will be shortened by 10 minutes, and the rest period stays the same. If the pulse rate is loo beats/min at the beginning of the next rest period, the following work cycle will be shortened another 10 minutes. Also, good hygienic standards must be maintained by frequent change of clothing and daily showering. Clothing should be permitted to dry during rest periods. If skin problems occur, consult i.-dacal personnel. The human body "senses" cold as a result of two factors, the air temperature and the wind velocity. Cooling of the flesh increases rapidly as wind -felocity goes up. Frostbite can occur at relatively mild temperatures if wind penetrates the body insulation. For example, when the air temperature is 40"F and the wind velocity is 30 miles per hour (mph) , the exposed skin would perceive an equivalent still air temperature of 13"F. Table 5-1 Iz