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Page 19B, PROCEDURES FOR SELECTION OF RESPIRATORY PROTECTIVE <br /> EQUIPMENT. Change first paragraph to read: <br /> "Environmental engineering studies have determined that <br /> detectable levels of inorganic arsenic, chromium, and copper are <br /> present at various locations within the MCTC facility site <br /> boundaries. Surface impoundment soils and sediments contain <br /> arsenic, chromium, and coppers which may range up to 33,000 mg/kg <br /> of soil." <br /> Page 19B, Second Paragraph. Change last sentence to read: <br /> "Respirators will be worn by all persons assigned work within the <br /> restricted work areas until the air monitoring results for each <br /> area indicate that the airborne concentrations of chemicals are <br /> below their respective permissible exposure limits." <br /> Page 22, Section 9.14, TEMPERATURE CONTROLS. Change the paragraph to <br /> read: <br /> "The ambient temperature and humidity will be monitored using a <br /> wet bulb globe thermometer. Guidelines published by the American <br /> Conference of Governmental Industrial Hygienists will be used in <br /> establishing work-rest schedules." <br /> Page 22, Section 9.15, HEAT STRESS CONTROL. Add the following: <br /> o Workers will use the buddy system to monitor for signs of <br /> heat stress exposure in fellow employees. <br /> o A.C.G.I.H. guidelines will be followed in setting work-rest <br /> schedules as no OSHA regulation specifically covers heat <br /> stress. <br /> AD2-9 <br />