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Quarry operations are also not expected to change since quarry activities are expected to <br /> maintain current levels of production and the expansion will only extend the life of the operation. <br /> Increases in air pollution levels are not expected. <br /> Air quality will improve with the construction of the new asphalt plant, The new plant will be <br /> identical to Nello Teer's Wake Asphalt Plant in Raleigh. Air modeling of this plant indicates that <br /> concentrations of particulate matter SO2, NOX, VOCs, and CO are far less than applicable ambient <br /> air quality standards, In fact, the maximum modeled ambient concentration contributions from <br /> the Wake Asphalt Plant stack are less than the EPA's 'significant' levels, suggesting that <br /> concentration contributions may be less than limits of analytical detection. <br /> Modeled concentrations of potentially toxic substances are also low. The maximum modeled <br /> concentrations of formaldehyde, beryllium,cadmium,chromium, nickel,manganese,and mercury <br /> are far less than Threshold Limit Values (TLVs), and meet North Carolina toxic concentration <br /> standards. <br /> Finally, the carcinogenic risk posed by emissions from the Wake Asphalt Plant is quantified, and <br /> found to be smaller than the 1 x 10-6 (1/1,000,000) acceptable risk for each suspected carcinogen <br /> individually, and for the sum of all carcinogens. <br /> These findings indicate that the ambient concentrations of pollutants which can be expected to <br /> occur as a result of emissions from the new quarry asphalt plant should cause no adverse health, <br /> welfare, economic or environmental impact. <br /> Noise (Sections 3.5.6 and 4.5.6) - The operations at the existing quarry will not change with the <br /> expansion. Movement of activities will bring noise generating equipment closer to the southeast, <br /> however. Evidence from the noise monitoring performed in March of 1992 indicates that this <br /> should not affect the quality of life to residents who reside to the southeast of the existing site. <br /> No increase in quarry traffic is expected with this expansion. Relocation of SR 1104 should <br /> produce no additional noise from motor vehicle traffic. <br /> The new asphalt plant will be equipped with new burners to reduce any noise emitted from the <br /> facility. Increased buffer or screening around the complex will also reduce off-site noise from the <br /> asphalt plant. <br /> S-5 <br />