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r <br /> 5 1 <br /> i 1 <br /> . 30 September 1999 m <br /> AGE-NC Project No 99-0646 <br /> Page 2 of`7 - <br /> 1 , 1, <br /> y 1 ' <br /> 3.0. ON-SITE CONTROL <br /> r <br /> ' The Site Safety Officer will coordinate site access control and security Arexclusion zone will be <br /> ' established approximately 10 feet around boring location work areas ,No unauthorized person shall ` <br /> be allowed within this exclusion area <br /> y 4 <br /> 4 0. HAZARD EVALUATION <br /> The following substance(s) or hazards are known or suspected to be on site <br /> _3•. <br /> SUBSTANCES INVOLVED:' CONCENTRATIONS; ', <br /> Benzene Up to 1 9 ppm - <br /> Toluene Up to 49 ppm <br /> • Ethyl-benzene ,Up to 66 ppm <br /> Total xylenes Up to 760 ppm <br /> MTBE <br /> Gasoline 8,100 ppm <br /> 1 I <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 flainmable and have low solubility in water } <br /> Exposure to these materials in excess of reco'mmende&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 concentrataons_xncludei headache, nausea, drowsiness, N _ T <br /> ` dizziness,and loss of coordination Certain components of gasoline(BTE&X etc }are known <br /> or suspectedcarcinogens 4 <br /> The' additional potential hazards include _$ljp-trig--fall hazards, noise. heavy !ems inment ,i e_, <br /> Qeol2robe rig), vibration hazardsa_traffic hazards. etc y <br /> I r <br /> E <br /> , I i <br /> Advanced GeoEnN ironmental,Inc <br /> ' w <br /> c r <br /> r — <br />