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_a Sb } Lead In the workplace, OSHA regulates the exposure of workers to lead and inorganic lead compounds, the permissible exposure limit is 50 µg/m'. To assure that workers are not exposed to higher lead concentrations, OSHA requires workers, at a minimum, to use air-purifying respirators and wear protective clothing in areas where airborne lead compounds are known to exist. Employers are also required to post signs ]see the following example], indicating areas where airborne lead is likely to be present. } WARNING LEAD WORK AREA POISON } NO SMOKING OR EATING 3 Lead (inorganic) is a bluish-white, silver or gray odorless solid. Short-term exposure to '} lead can cause decreased appetite, insomnia, headache, muscle and joint pain, colic, and constipation. Considerable data exist on the effects of lead exposure in humans. It .> is a poison by ingestion and a suspected human carcinogen of the lungs and kidneys. " There are data to suggest that lead is a mutagen and can cause reproductive effects. -.i Human systemic effects by ingestion and inhalation (the two routes of absorption) include loss of appetite, anemia, malaise, insomnia, headache, irritability, muscle and t joint pains, tremors, flaccid paralysis without anesthesia, hallucinations and distorted 'a perceptions, muscle weakness, gastritis, and liver changes. Recent experimental evidence suggests that blood levels of lead below 10 pg/dl (micrograms per deciliter) can have the effect of diminishing the IQscores of children. The OSHA PEL is listed as 0.05 mg/m'. The Cal/OSHA PEL is listed as O.OS mg/m'. - The TLV is listed as 0.05 mg/m'. 3 WARNING: Lead is known to the State of California to cause cancer. WARNING: Lead is known to the State of California to cause birth defects or other reproductive harm. Zinc _t Zinc is a bluish-white, lustrous metallic element, and zinc oxide is a white fume. Short- term exposure to zinc oxide fume can cause a flu-like illness called metal fume fever. J Symptoms of metal fume fever include headache, fever, chills, muscle ache, nausea, vomiting, weakness, and tiredness. Pure zinc powder, dust, and fume is relatively non-toxic to humans by inhalation. However, the inhalation of zinc oxides may cause a Sb Environmental Services,UC D October,2003 California Integrated Waste Management Board Site Specific Health and Safety Plan Page 13 of 62 Tracy Tire Fire Remediation Project