Laserfiche WebLink
WA <br /> '10 <br /> PAZ <br /> ,�r :r <br /> MMM <br /> - - <br /> R <br /> G� <br /> Kai <br /> C. Rad ation Hazards (including mixed waste) : <br /> None known or suspected. <br /> D. Physical Hazards: <br /> Gasoline vapors are heavier than air. The flashpoint <br /> of gas is 500F (flammability) . Explosive conditions <br /> w may exist if gasoline concentrations tuildup (LEI, for <br /> gasoline is 1.3 percent or 13,000 ppm) . <br /> Physical trauma associated with heavy equipment is <br /> possible. Noise from the drill rig may require <br /> hearing protection. The use of hearing protection is <br /> required if noise levels exceed 85 dBA for extended <br /> periods of time. ?, <br /> If vehicular traffic is ongoing in the vicinity of <br /> the site, barricades will be set up and workers will <br /> wear brightly colored vests. <br /> E. Hazards Posed by Site Activities: <br /> During the drilling of the soil borings and 3 <br /> monitoring well, care must be taken to avoid <br /> underground gats and power lines and above-ground <br /> power lines and support structures. Drilling y <br /> equipment will be kept at least 15 feet away from all <br /> overhead power lines. <br /> - F. Heat and Cold Stress Hazards: <br /> 3.: <br /> i <br /> The field work is scheduled for .Tune, when <br /> temperatures may approach 100°F. Because the <br /> incidence of heat stress depends on a variety of <br /> factors, all workers, even those not wearing <br /> protective equipment, should be monitored. For <br /> workers wearing permeable clothing (e.g., standard <br /> CH2M HILL cotton or synthetic work clothes) , measure: i <br /> Heart Rate. Count the radial pulse during a 30- <br /> second period as early as possible during a rest <br /> period. If the heat rate exceeds 110 beats per <br /> minute at the beginning of the rest period, <br /> shorten the next work cycle by on-third and keep <br /> the rest period the same. If the heart rate <br /> fi still exceeds 110 beats per minute at the next <br /> rest period, shorten the work cycle by one- <br /> third. <br /> • Oral Temperature. Use a clinical (disposable) <br /> thermometer (3 minutes under the tongue) or <br /> similar device to measure the oral temperature <br /> at the end of the work period (before drinking) . <br /> � ... 5F031604\WP\005.51 A-4 <br />