Laserfiche WebLink
• 4.0 HEALTH HAZARD INFORMATION <br /> Chemical hazard information is listed below for potentially hazardous chemicals <br /> previously detected during the Preliminary Environmental Site Assessment Report (Geological <br /> ` Technics, Inc, 1995) and to which employees may be exposed at the work sites This hazard <br /> information includes the potentially hazardous chemicals used by the employees while <br /> performing sampling activities, and those identified during previously conducted investigations <br /> at the Roberts Property Potential physical and biological hazards are discussed in this section <br /> 4.1 Chemical Hazards <br /> Crude oil is the hazardous material known to exist at the sampling site Crude oil <br /> is composed of numerous organic chemicals, with up to 5% toluene, 5% xylene, and 2% <br /> benzene Chemical and physical properties for some of these constituents are provided in <br /> . Appendix C Material Safety Data Sheets (MSDSs) for crude oil are also provided in Appendix <br /> C <br /> Discussion of the toxicity of the individual chemicals of concern is provided on <br /> their MSDSs In the reality of this project, exposure to individual chemicals cannot be predicted <br /> Therefore, the following discussion focuses on the group of chemicals of concern <br /> The chemicals of concern vary in vapor pressure, but all are considered volatile <br /> and capable of presenting an inhalation hazard Volatilization could occur when soil cuttings are <br /> brought up and exposed to the atmosphere The acute toxicity of these chemicals, alone or <br /> synergistically, is a function of their effect on the central nervous system Overexposure <br /> symptoms include headache, fatigue, lightheadedness, giddiness, and agitation <br /> Symptoms of chronic exposure include liver and kidney damage, but the potential <br /> for chronic exposure does not exist in the current scope of work <br /> 4-1 <br />