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IV ..i <br /> 11 May 2001 <br /> AGE-NC Project No. 01-0833 <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 zone will be <br /> established approximately 5 feet around excavation.No unauthorized person shall be allowed within <br /> this exclusion area. An entry zone will be established approximately 15 feet around the exclusion <br /> zone. <br /> 4.0. HAZARD EVALUATION <br /> The following substance(s) or hazards are known at the following concentrations: <br /> SUBSTANCES INVOLVED: CONCENTRATIONS: <br /> Gasoline <br /> BTEX <br /> other fuel additives <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels - Components of fuels are colorless liquids with strong aromatic <br /> petroleum hydrocarbon-like odors. They are flammable and have low solubility in water. <br /> Exposure to these materials in excess of recommended exposure limits can cause mild eye, <br /> nose, and throat irritation and can produce a narcotic effect on the central nervous system. <br /> Symptoms of exposure at these concentrations include headache, nausea, drowsiness, <br /> dizziness,and loss of coordination.Certain components of gasoline(BTE&X etc.)are known <br /> or suspected carcinogens. <br /> The additional potential hazards include: Slip trip-fall hazards. noise.heavyquipment(i.e., mobile <br /> drill rig), vibration hazards.traffic hazards. etc. <br /> 5.0. PERSONAL PROTECTIVE EQUIPMENT <br /> Based on evaluation of potential hazards, the following levels of personal protection have been <br /> Advanced GeoEnvironmenlal,Inc. <br />