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N%W.11 1%001 <br /> 09 September 1998 <br /> AGE-NC Project No. 98-0483 <br /> Page 2 of 6 <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 boring location work areas. 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 /> SUBSTANCES INVOLVED CONCENTRATIONS: <br /> Benzene Not detected <br /> Toluene Not detected <br /> Ethyl-benzene Not detected <br /> Total xylenes 12.0 ppb in soil <br /> Diesel 14,000 ppm in soil <br /> Motor oil 14,000 ppm in soil <br /> Gasoline Unknown <br /> Waste oil petroleum-based products: Unknown <br /> Other organic-based products (MTBE, etc.) 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 /> Advanced GeoEnvironmental,Inc. <br />