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City of La PorteJuly 6, 2016 <br />Pine Bluff Subdivision Improvements <br />conveyed via the roadside ditches along Pine Bluff St and Bay Shore Dr to the <br />outfall(s). <br />3. Determine the amount of increased impervious cover associated with the <br />reconstruction of the streets and additional sidewalks to determine the increase <br />in runoff conveyance resulting from the proposed improvements. Alternatives will <br />be investigated to determine the most efficient drainage system(s) for conveying <br />proposed condition flows to the outfall locations. This study will identify required <br />drainage facility types, ditch sizes and slopes, driveway culvert sizes and slopes, <br />or storm sewer sizes and slopes, to document the improvements that are <br />required and where. <br />4. Increases in flow to outfall locations will be mitigated by modifying the <br />contributing existing condition drainage boundaries. Allowing for increased <br />conveyance directly to the bay yet no increase in flow to the SH146 drainage <br />system. <br />5. A report will be created to document the recommended alternative of this <br />analysis with maps, exhibits and supporting calculations. <br />Design Phase Services: <br />1. Perform utility records research on existing underground utilities, overhead <br />utilities, and any pipeline crossings within the project limits. <br />2. Review existing water and sewer services to the project area and provide <br />necessary improvements like fire hydrants, valves, manholes, services leads and <br />line accessibility for maintenance. <br />3. Investigate the roadway alignment at Pine Bluff Drive/Pine Bluff Street and <br />Bayshore Drive in order to straighten out the entrance as much as possible within <br />the existing right-of-way provided. <br />4. Investigate and provide a recommendation on removing the section of pavement <br />between Pine Bluff Drive and Bayshore Drive. <br />5. Consider the following roadway cross section options, materials and cost <br />estimates: <br /> Concrete or Asphalt Pavement with Storm Sewer <br /> Concrete or Asphalt Pavement with Roadside Ditch <br /> Combination of Storm Sewer and Roadside Ditch <br />6. Investigate and determine optimal pavement width options in order to fit the <br />roadway and utilities within the existing right-of-way while providing access to <br />utilities for maintenance and service. <br />7. Prepare a presentation and attend City Council meeting to present findings and <br />make recommendations. <br />8. Design the roadway vertical alignment to achieve the necessary cover for the <br />new storm sewer system. Determine roadway grades and cross slopes to <br />Page 2 of 5 <br />20 <br /> <br />