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10 September 2008 <br />AGE -NC Project No. 07-1569 <br />Page 3 of 8 <br />The following substance(s) or hazards are known or suspected to be on site. <br />SUBSTANCES INVOLVED: I CONCENTRATIONS: <br />Total Petroleum Hydrocarbons Quantified as Unknown <br />Diesel (TPH-d) <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 (BTEX 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 glass (i.e., dust /shards) 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 />LOCATION: <br />JOB FUNCTION: <br />LEVELS OF PROTECTION: <br />Exclusion Zone <br />Boring locations <br />A B C D Other <br />Reduction Zone <br />Preserve samples <br />A B C D Other <br />Support Zone <br />I Support functions <br />A B C D Other <br />Specific protective equipment for each level of protection used is follows: <br />Advanced GeoEnvironmental, Inc. <br />