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Site Safety a»d 4eaith'Plan - -- -- —_- _ ._ _ --- ------ <br /> odor <br /> _odor Ionization <br /> Compound PEL TLV bl IDLH'r Thresho Potential e/ Physical Description/Health <br /> (Qpm) (ppm) (ppm) ld d' (eV) Effects/Symptoms'/ <br /> in <br /> [ceiling] tight chest,headaches,rales, blurred vision, <br /> muscle aches,nausea,vomiting,dry throat, <br /> weakness,lower back pain,exhaustion, <br /> fatigue,vague discomfort,shortness of <br /> breath,and decreased pulmonary function. <br /> Fumes cause metal fume fever. Mutagen <br /> and experimental teratogen. <br /> a/ PEL=Permissible Exposure Limit. OSHA-enforced average air concentration to which a worker may be <br /> exposed for an 8-hour workday without harm. Expressed as parts per million(ppm)unless noted otherwise. <br /> b/ TLV=Threshold Limit Value-Time-Weighted Average. Average air concentration(same definition as PEL, <br /> above)recommended by the American Conference of Governmental Industrial Hygienists(ACGIH),2001 <br /> Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices. <br /> c/ IDLH=Immediately Dangerous to Life or Health. Air concentration at which an unprotected worker can escape <br /> without debilitating injury or health effects. Expressed as ppm unless noted otherwise. IDLH values are published <br /> in the NIOSH Pocket Guide to Chemical Hazards,June 1997. <br /> d/ When a range is given,use the highest concentration. <br /> e/ Ionization Potential,measured in electron volts(eV),used to determine if field air monitoring equipment can <br /> detect substance. Values are published in the NIOSH Pocket Guide to Chemical Hazards,June 1997. <br /> f/ Olfactory fatigue has been reported for the compound and odor may not serve as an adequate warning property. <br /> g/ Refer to expanded rules for this compound in Title 8 of the California Code of Regulations <br /> h/ Respirable fraction. <br /> i/ Total dust. <br /> j/ (ceiling)=Ceiling concentration which should not be exceeded at any time. <br /> k/ Based on exposure limits for petroleum distillates(petroleum naphtha). <br /> I/ Irritation threshold. <br /> m/ Based on fume. <br /> n/ NIOSH recommends reducing exposure to the lowest feasible concentration,and limiting the number of workers <br /> exposed. <br /> o/ Based on selenium oxide. <br /> p/Indicates that the IDLH value was based on 10%of the lower explosive limit for safety considerations,even <br /> though relevant toxicological data indicated that irreversible health effects or impairment of escape existed only at <br /> higher concentrations(NIOSH Pocket Guide to Chemical Hazards, June 1997). <br /> q/ Based on dust. <br /> r/ Refer to expanded rules for this compound in the Code of Federal Regulations. <br /> s/ Total dust containing no asbestos and less than 1%crystalline silica. <br /> t/ Descriptions and toxic properties reflect chemicals in their concentrated or pure form. Chemical concentrations at <br /> the site are mostly expected to be in the parts per billion or parts per million range. <br /> u/ Based on coal tar pitch volatiles <br /> Incident Free Operation Page 53 of 68 <br />