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, <br /> . 09 September 2003 <br /> AGE-NC Project No 02-0962 <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 will be <br /> established approximately 10 feet around GeoProbe excavation area No unauthorized person shall <br /> 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 /> SUBSTANCESJNVOLVED: 'CONCENTRATIONS: <br /> Benzene unknown <br /> Toluene unknown <br /> . Ethyl-benzene unknown <br /> Total xylenes unknown <br /> TPH-gasoline unknown <br /> Other organic-based products (e g,fuel oxygenates) unknown <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, heavy equipment (i e , <br /> GeoProbe), vibration hazards,,,traffic hazards, etc <br /> A <br /> Advanced GeoEnvironmental,Inc <br />