Wastewater Master Plan Update -- Northgate

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Wastewater Master Plan Update -- Northgate

  1. 1. 1 NORTHGATE WASTEWATER MASTER PLAN UPDATE For City Council August 8, 2013
  2. 2. Executive Summary 2 • Conclusions for Wastewater service in Northgate • Excess capacity exists for currently planned Developments • Assumes Campus Pointe served by TAMU • At present growth rate, improvements must start in FY-16 • Future Collection System improvements required • Hensel Park Lift Station capacity from 1,800 gpm to 2,800 gpm – $2.3 million in FY-16 • Northeast Trunk Line must be upsized to match lift station – $3.0 million spread over FY-16/17/18 • Culpepper and Cooner Street line upgrades are underway
  3. 3. Northgate District 3 • Serves as the City’s primary entertainment district • Represents the City’s only current urban character area. • Subject of considerable planning along with substantial public and private
  4. 4. 2011 Wastewater Master Plan 4 • Previous Master Plan • Wastewater Master Plan last approved by City Council in June 2011 • Predicted a modest growth rate in the Northgate area • Recent Surge of dense development in Northgate necessitated a closer look • 2013 Northgate Area Wastewater Master Plan Update • Revised the map of expected density for the new paradigm – How do the increased densities translate into additional wastewater demands? – Will additional improvements be needed to prevent • surcharge conditions?
  5. 5. Existing Wastewater System Legend !!!! ! ! ! ! ! ! !! !!!!!! City Limit Wastewater Mains CCWWTP TOPOGRAPHIC SHED LCWWTP TOPOGRAPHIC SHED Existing Area Served FutureGrowth 5 NORTHGATE
  6. 6. Northgate Area Map 6
  7. 7. Future Projections 7 • Worked with Planning and Development Services to develop a revised ‘Proposed Dwelling Unit Equivalent (PDUE)’ for Northgate • Derived Projected Build-Out System Demands
  8. 8. Hydraulic Modeling 8 • Used to verify that collection system is OK with developments underway • Ran scenarios using revised loading data to simulate operating conditions and predict system performance in a worst case scenario
  9. 9. Results 9 • Hensel Park Lift Station: • Located in Hensel Park/Married Student Housing • Serves all of Northgate • Lift station will need to be expanded for a • ‘build-out’ capacity of 2,800gpm • (current capacity = 1,800 gpm) • Currently planned for FY-16 • Total cost approx $2.3 million
  10. 10. Results (cont) 10 • Northeast Trunkline • Spans from Northgate to CCWWTP • Trunkline has adequate capacity for recent/anticipated development projects • With additional loading from Northgate area, line will eventually need to be upsized • Currently planned for FY-16/17/18 • Total cost approx $3.0 million
  11. 11. Results (cont) 11 • Additional Identified Pipe Segments • Modeling scenarios identified that Culpepper Street and Cooner Street sewer lines need to be upsized • Both upgrades are ongoing projects, Culpepper with the ACC Development, and Cooner with CDBG project
  12. 12. Results (cont) 12 • Exact timing is difficult to predict • Will work with Planning & Development services to track growth trends and update projections in the Northgate District • Currently evaluating a customized “per person” wastewater demand for the Northgate
  13. 13. QUESTIONS? 13

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