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29 April 1997 <br /> AGE-NC Project No. 97-0327 <br /> Page 2 of 7 <br /> 3.0. ON-SITE CONTROL <br /> Tim Cuellar has'been designated to coordinate access control and security'onsite. A safe <br /> perimeter has been established at 20 feet around boring/excavation. No unauthorized person <br /> should be 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 /> I <br /> Gasoline (?) unknown <br /> Diesel (?) unknown <br /> Waste oil petroleum-based products (?) unknown <br /> Other organic-based products (?) 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 <br /> known:or suspected carcinogens. <br /> The following additional hazards are expected on site: .typical work related to facility. Noise <br /> falling rods, flying hammer. snapped cables, etc. on the backhoe/excavator (if applicable). <br /> 5.0. PERSONAL PROTECTIVE EQUIPMENT <br /> Based on evaluation of potential hazards, the following levels of personal protection have been <br /> designated for.the applicable work areas or task: <br />