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Since much of relocated SR 1104 will require fills rather than cuts and the cuts that will be <br /> required are expected to be quite shallow, the potential for disturbing the aquifer and affecting <br /> the rate of recharge to the aquifer will be low. There is not expected to be an increase in runoff <br /> pollutants from the relocated roadway since the project will not create additional traffic on SR <br /> 1104 and there will be no significant increase in impervious roadway surface as compared to the <br /> existing roadway. <br /> The asphalt plant is expected to have no adverse affects on groundwater due to the proposed <br /> spill containment features of the new asphalt plant. <br /> 4.5.2 Floodplains <br /> A small area of existing floodplain associated with Phil's Creek may experience minor disruptions <br /> during the introduction of culvert structures at the relocated roadway. However, effects to the <br /> floodplains will be minimized by proper sizing of culverts and implementation of an erosion and <br /> sedimentation control plan and maintenance of vegetation in buffer zones. No impacts to the <br /> floodplains associated with Phil's Creek are expected due to the quarry expansion or the <br /> relocated asphalt plant. <br /> 4.5.3 Hydrology and Drainage <br /> A. Sensitive Areas <br /> Several bodies of water within the influence of the project area that could be sensitive to changes <br /> in water quality are Phil's Creek, OWASA Quarry Reservoir and University Lake. As stated <br /> previously, water sampling in Phil's Creek downstream of the project area and of the quarry <br /> reservoir have indicated that present operation at the quarry and asphalt plant have had no <br /> measurable effect upon these sensitive waters. <br /> Operations at the expanded quarry site are expected to continue as they have over the past 20 <br /> years. No water quality problems are expected. Runoff in the pit area will flow into the pit. Water <br /> removed from the pit will be pumped into holding/settling basins. Recently, Phil's Creek was <br /> reclassified to WS-II. Stormwater discharges are permitted under this classification and one point <br /> of discharge into Phil's Creek from the third settling basin has been approved. This discharge <br /> point will be carefully monitored and no adverse effects to Phil's Creek are expected. <br /> The new Nello Teer asphalt plant will be relocated to an area further from the existing quarry <br /> reservoir and Phil's Creek. In addition, the new asphalt plant has been designed with state of the <br /> 4-6 <br />