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• <br /> 15 May 2015 <br /> AGE-NC Project No. 15-3289 <br /> Page 2 of 7 <br /> 3.0. ON-SITE CONTROL <br /> The Site Safety Officer will coordinate site access control and security. An exclusion <br /> zone will be established approximately 20 feet around excavation location work areas. <br /> No 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 /> FGasoline Unknown <br /> Diesel Unknown <br /> BTEX Unknown <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels - Components of fuels are colorless liquids with strong <br /> aromatic petroleum hydrocarbon-like odors. They are flammable and have low <br /> 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 gasoline (BTEX etc.) are known or <br /> suspected carcinogens. <br /> The additional potential hazards include: Slip-trip-fall hazards noise heavy equipment <br /> (i.e., drill rig) vibration hazards traffic hazards etc. <br /> Advanced GeoEnvironmental,Inc. <br />