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15 May 2000 <br /> AGE-NC Project No. 00-0719 <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 10 feet around soil borings. No unauthorized person shall be allowed <br /> within this exclusion area. <br /> 4.0. HAZARD EVALUATION <br /> The following substance(s) or hazards are known at the following concentrations: <br /> SUBSTANCES INVOLVED: CONCENTRATIONS: <br /> Motor Oil/Diesel <br /> Possible metals at background levels <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbons - Components of oils are colorless liquids with strong aromatic petroleum <br /> hydrocarbon-like odors. They are flammable and have low solubility in water. Exposure to <br /> these materials in excess of recommended exposure limits can cause mild eye, nose, and <br /> throat irritation and can produce a narcotic effect on the central nervous system. Symptoms <br /> of exposure at these concentrations include headache,nausea,drowsiness,dizziness,and loss <br /> of coordination. Certain components of gasoline (BTE&X etc.) are known or suspected <br /> carcinogens. <br /> The additional potential hazards include: Slip-trip-fall hazards,noise,heav�equipment(i.e., mobile <br /> boring 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 /> designated for the applicable work areas or task: <br /> Advanced GeoEnvironmental,Inc. <br />