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8, Delineation of Drainage Areas <br /> The major stream crossings for the roadway relocation were evaluated to determine contributing <br /> drainage areas and design stream flows. The design stream flows were used in preliminary sizing <br /> of culverts. Drainage areas for stream crossings were determined using the appropriate 1 inch <br /> = 2000 feet scale, 7-1/2 minute USGS quadrangle map (White Cross). <br /> C. Drainage Patterns <br /> Drainage patterns are not expected to be altered with this project. Drainage structures will be <br /> constructed to avoid major increases in flood levels and/or changes in drainage patterns <br /> Dredging and filling operations will comply with the US Army Corps of Engineers' 404 permit <br /> requirements and any other applicable standards. Nationwide 14 and Nationwide 26 Permits <br /> have been obtained for this project. <br /> The intermittent stream located at the northeast corner of the pit expansion area will be relocated <br /> to connect with Phil's Creek northeast of its present confluence. <br /> 4,5.4 Topography, Geology, and Soils <br /> The project would affect the topography, geology, and soils most significantly in the vicinity of <br /> the proposed quarry operation. Existing geologic formations would be mined resulting in the <br /> removal of soil and rock formations. Topography would also be altered with the introduction <br /> and/or expansion of the mining pit. Examination of earthwork information for the relocated <br /> roadway shows that construction would require fill to be hauled in. <br /> 4.5.5 Air Quality <br /> Since the relocated roadway is in close proximity to the existing roadway no increases of present <br /> traffic related air quality is expected. <br /> Quarry operations are also not expected to change. The expansion will only extend the life of <br /> the operation. Increases in air pollution are not expected. <br /> Air quality will be improved with the construction of the new asphalt plant. The new plant will be <br /> virtually identical to Nello Teer's Wake Asphalt Plant in Raleigh. Air modeling of this plant <br /> indicates that concentrations of particulate matter, SO2, NOx, VOCs, and CO are far less than <br /> applicable ambient air quality standards. In fact, the maximum modeled ambient concentration <br /> contributions from the Wake Asphalt Plant stack are less than the EPA's 'significant' levels, <br /> 4-8 <br />