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30 November 2010 <br /> AGE-NC Project No. 10-1821 <br /> Page 2 of 7 <br /> 3.0. ON-SITE CONTROL <br /> The Site Safety Officer will coordinate site access control and security. A exclusion zone <br /> will be established approximately 10 feet around boring location work areas. No <br /> unauthorized person shall be allowed within this exclusion area. <br /> 4.0. HAZARD EVALUATION <br /> The following substance(s) or hazards are known or suspected to be on site. <br /> SUBSTANCES INVOLVED: CONCENTRATIONS: <br /> Diesel (hydrocarbon fuel) Unknown <br /> Volatile Aromatic Compounds Unknown <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels or waste oil: Components of fuels are colorless liquids with <br /> strong aromatic petroleum hydrocarbon-like odors. They are flammable and have <br /> low solubility in water. Exposure to these materials in excess of recommended <br /> exposure limits can cause mild eye, nose, and throat irritation and can produce a <br /> narcotic effect on the central nervous system. Symptoms of exposure at these <br /> concentrations include headache, nausea, drowsiness, dizziness, and loss of <br /> coordination. Certain components of fuel (BTEX, etc.) are known or suspected <br /> carcinogens. <br /> 2. Traffic: The facility is an active hospital facility. However, the area around the work <br /> project is used primarily for deliveries. Vehicles will be restricted from using the <br /> driveway during work periods. <br /> The additional potential hazards include: Slip-trip-fall hazards, noise, hand tools, grouting, <br /> traffic hazards, etc. <br /> Advanced GeoEnvironmental,Inc. <br />