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13 November 1995 <br /> AGE-NC Project No. 95-0185 <br /> Page 2 of 6 <br /> Local Agency: San Joaquin County PHS-EHD <br /> Contractor: Aa►,arnced GeoEnvironmental Inc. <br /> 1803 W. March Lane Stockton CA 95207 <br /> C. ONSITE CONTROL <br /> William Little has been designated to coordinate access control and security onsite. A safe <br /> perimeter has been established at 20 feet around excavation . No unauthorized person should be <br /> within this exclusion area. <br /> D. HAZARD EVALUATION <br /> The following substance(s) or hazards are known or suspected to be on site. <br /> Substances Involved: Concentrations: <br /> TPH-diesel unknown <br /> BTE&X unknown <br /> The primary hazards of each are identified as follows: <br /> 1. Hydrocarbon fuels-•Components of fuels 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 following additional hazards are expected on site: typical work related to facility. Noise,falling <br /> rods, flying hammer, snapped cables, etc. on the drill ria(if applicable). <br />