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%W.01 N.001 <br /> 17 August 2000 <br /> AGE-NC Project No. 00-0736 <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 20 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 /> M9 ONC . <br /> E. ..T . <br /> M$ ...... <br /> SUBSTANCESINVOL 0:1...�;::1,�­:.r. <br /> Gasoline Unknown concentrations <br /> Diesel Unknown concentrations <br /> Motor Oil Unknown concentrations <br /> Benzene Unknown concentrations <br /> Toluene Unknown concentrations <br /> Ethylbenzene Unknown concentrations <br /> Xylenes Unknown concentrations <br /> Methyl tertiM butyl ether (MTBE) Unknown concentrations <br /> The primary hazards of each are identified as follows: <br /> I 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, heave equipment (i.e., drill <br /> rig), vibration hazards, traffic hazards, etc. <br /> Advanced GeoEnvironmental,Inc. <br />