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Subcontractor Responsibilities <br /> All subcontractors are responsible for their own health and safety program and the health <br /> and safety of their own employees. This requirement is based on Occupational Safety and Health <br /> Administration (OSHA) regulations, which recognize the employer-to-employee responsibility for <br /> health and safety. A copy of their written program must be submitted for review to BC, if <br /> requested. In an effort to assist the subcontractors, and to comply with hazard communication <br /> requirements, BC will provide a copy of the site safety and health plan for this project to each <br /> subcontractor for implementation for the subcontractor's employees. <br /> HAZARD ANALYSIS <br /> The potential hazards to personnel working at the project site have been classified as <br /> chemical hazards, physical safety hazards, noise, and heat stress. Each potential hazard relative to <br /> the potential for exposure is described below. <br /> Chemical Contamination <br /> Health hazards associated with potential chemical exposures includes toxicity. Toxicity <br /> may occur following inhalation of chemical vapors that could potentially be released from affected <br /> soil or groundwater, and direct contact with soil and/or groundwater that could potentially contain <br /> hazardous materials. The exposure limit for chloroform is 2 parts per million (ppm) as an 8-hour <br /> time-weighted average airborne concentration. <br /> Chloroform is potential occupational carcinogen. Acute exposure can lead to dizziness, <br /> disorientation, nausea, headache, and eye and skin irritation. Chronic chloroform exposure targets <br /> liver, kidney, heart, eyes, and skin. The material safety data sheet (MSDS) for chloroform is <br /> included as Attachment 1. <br /> Table 1 presents a summary of the chemical exposure limits and characteristics associated <br /> with chloroform. <br /> Table 1. Chemical Exposure Limits and Characteristics <br /> TLV"8-hour IDLH <br /> Chemical IPa TWA level Notesd <br /> Chloroform 11.42 2 ppm` 500 ppm C <br /> 'Ionization potential in electron-volts (eV). <br /> "Threshold Limit Value as the airborne 8-hour time-weighted average (TWA)established by the American <br /> Conference of Governmental Industrial Hygienists (ACGIH), 1996. <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, 1994 edition. <br /> 'Hazard category; C-Carcinogen. <br /> 4 <br /> 01/31/9T ..MEMOS\2MUW243\SSf -GPC DOC <br />