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• Acute and chronic effects of the toxic chemicals identified at the site, including <br /> odors and conditions likely to indicate the presence of site-specific chemicals <br /> • Physical health hazards identified at the site <br /> • Personal hygiene <br /> • Safety equipment, the procedures required for personnel protection, and their <br /> effectiveness and limitations <br /> • Work areas established at the site <br /> • Prohibitions in contaminated areas. <br /> • Change in site operations <br /> 3.4.3 Tailgate Safety Meetings <br /> A tailgate safety meeting will be conducted at the beginning of each shift or whenever new <br /> employees arrive at the,fob site once the job commences The health and safety <br /> considerations for the day's activities will be discussed, and the necessary protective <br /> equipment outlined. The tailgate safety meeting will be documented on the Tailgate Safety <br /> Meeting Form <br /> 3.5 Site Monitoring <br /> Periodic monitoring with a photolonization detector (PID) and a combustible gas/02 meter <br /> will be conducted during any work activity. The PID will be calibrated with isobutylene. <br /> The combustible gas meter will be set to sound an alarm if oxygen concentration in the air is <br /> less than 20% or more than 25%, or if a combustible substance is present in air at greater <br /> than 10% of its lower explosion limit (LEL) The work area will be evacuated and the Health <br /> and Safety Coordinator will be consulted if more than 10ppm of volatile organic emissions, <br /> less than 20% oxygen, more than 25% oxygen, or more than 10% of the LEL is present in <br /> the breathing zone of site workers. If more than 10ppm is measured with the PID, Draeger <br /> tubes will be used to identify the substance. Tasks of primary concern are drilling and well <br /> sampling The monitoring results will dictate the selection and appropriateness of personal <br /> protective equipment. The extent of monitoring will be based on the suspect contaminants <br /> and the activity to be performed. The Health and Safety Coordinator will be responsible for <br /> this decision based on input from the Field Supervisor <br /> MZIM21-93/ENG/93-0127 bk <br /> 16 <br />