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M <br /> Concentrations of Petroleum Constituents in Soil That Will Have No Significant Risk of <br /> Adversely Affecting Human Health <br /> Utility <br /> Chemical Residential Commercial/Industrial Worker <br /> 0-5 ft Volatilization 0-5 ft Volatilization to 0-10 ft <br /> bgs to Outdoor Air bgs Outdoor Air (5-10 bgs <br /> (mg/kg) (5-10 ft bgs) (mg/kg) ft lags) (mg/kg) (mg/kg) <br /> (mIk ) <br /> Benzene 1.9 2.8 8.2 12 14 <br /> Ethylbezene 21 32 89 134 314 <br /> Na thalene 9.7 9.7 45 45 219 <br /> PAH' 0.063 NA 0.68 NA 4.5 <br /> Notes: <br /> 1. Based on the seven carcinogenic PAHs as benzo(a)pyrene toxicity equivalent[BaPe]. Sampling and analysis for <br /> PAN is only necessary where soil was affected by either waste oil or Bunker C fuel. <br /> 2. The area of impacted soil where a particular exposure occurs is 25 by 25 meters (approximately 82 by 82 feet)or <br /> less. <br /> 3. NA= not applicable. <br /> 2. Are maximum concentrations of petroleum constituents in soil less than levels that a site <br /> specific risk assessment demonstrate will have no significant risk of adversely affecting human <br /> health? <br /> ❑ Yes ❑ No ❑ NA <br /> 3. Does the regulatory agency determine that the concentration of petroleum constituents in soil <br /> will have no significant risk or adversely affecting human health? <br /> ❑ Yes ❑ No ❑ NA <br />