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5 <br /> also result in pupil dilatation, nervousness, and insomnia. Elevated concentrations of xylene <br /> isomers may lead to corneal damage, and gastrointestinal symptoms including abdominal pain, <br /> nausea and vomiting <br /> Tetraethyl lead is a colorless liquid which may be dyed red, orange, or blue It is flammable <br /> and has a slight musty odor It may produce several symptoms including eye irritation, insomnia, <br /> anxiety, tremor, hyperreflexia, a decrease in heart rate, hypotension, nausea, anorexia, weight <br /> loss, hallucinations, convulsions, and coma Chronic exposure may lead to male sterility and <br /> neurological damage to the developing fetus Its target organs are the central nervous system, <br /> cardiovascular system, kidneys, reproductive system, and eyes <br /> Exposure to total petroleum hydrocarbons (TPH) may also occur TPH refers to heavy <br /> hydrocarbons which may present a fire hazard in extreme circumstances, such as the presence <br /> of flame, excessive heat or strong oxidizers An exposure limit for TPH has not been established <br /> due to the varied chemical composition Presently, there are no known chronic health hazards <br /> associated with TPH <br /> Table 1 presents a summary of the chemical exposure limits and characteristics associated with <br /> the BTEX compounds and tetraethyl lead Material Safety Data Sheets (MSDSs) for these <br /> substances are included as Appendix D <br /> Table I. Chemical Exposure Limits and Characteristics <br /> OVAb <br /> relative TLV` Flammable Odor <br /> response 8-hour IDLH° range threshold, <br /> Chemical IP' percent TWA level percent ppm Notes` <br /> Benzene 924 150 I ppm Ca 1 3-7 9 4 68 C,F <br /> Toluene 882 110 50 ppm 2,000 ppm 1 2-7 1 017-40 T,F <br /> Ethylbenzene 876 100 100 ppm 2,000 ppm 1 0-6 7 025-200 TF <br /> Xylene 856 ill 100 ppm 1,000 ppm 1 0-7 0 0 05-200PT.qF <br /> Tetraethyl lead 11 1 NA 0 075 mg/m31 40 mg/m3 18+ NA <br /> 'Ionization potential in electron-volts (eV) <br /> eCentury Organic Vapor Analyzer relative response to the compound in percent <br /> `Threshold Limit Value as the airborne 8-hour ume-weighted average (TWA) established by the American <br /> Conference of Governmental Industrial Hygienists (ACGIM, 1994-1995 <br /> °Immediately Dangerous to Life and Health level as published in the National Institute for Occupational Safety and <br /> Health (NIOSH), Pocket Guide to Chemical Hazards, 1990 edition <br /> `Hazard category, C-Carcinogen, F-Flammable, T-Toxic <br /> 'Airborne TWA established by the Occupational Safety and Health Administration (OSHA) and published in the <br /> NIOSH Pocket Guide to Chemical Hazards, 1990 edition <br /> l2/i.v94,&\m1?M$CWORTHARGO <br /> QMS PS410 <br />