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28 April 2005 <br /> AGE-NC Project No. 01-0886 <br /> Page 2 of 7 <br /> Lead Agency: San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Stockton, California <br /> Contractor: Advanced GeoEnvironmental,Inc. <br /> 837 Shaw Road, Stockton, California 95215 <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 10-15 feet around boring location work areas. No unauthorized person <br /> shall 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 /> Gasoline, Diesel (TPH-g, TPH-d) unknown <br /> Volatile Or anic Compounds 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(BTEX,etc.)are known <br /> or suspected carcinogens. <br /> The additional potential hazards include: Slip-trip-fall hazards, noise, heavy equipment (i.e., drill <br /> rig), vibration hazards, traffic hazards, etc. <br /> 5.0. PERSONAL PROTECTIVE EQUIPMENT <br /> Advanced GeoEnvironmental,Inc. <br />