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Two Towns, One County A Regional Approach to Wastewater Capacity

Two Towns, One County A Regional Approach to Wastewater Capacity. NC AWWA 2013 Annual Conference Wastewater Session November 11, 2013. Vicinity Map. Duplin County. Sampson County. I-40. Town of Watha. Town of Burgaw. Onslow County. US Hwy 117. Village of St. Helena. I-40.

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Two Towns, One County A Regional Approach to Wastewater Capacity

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  1. Two Towns, One CountyA Regional Approach to Wastewater Capacity NC AWWA 2013 Annual Conference Wastewater Session November 11, 2013

  2. Vicinity Map Duplin County Sampson County I-40 Town of Watha Town of Burgaw Onslow County US Hwy 117 Village of St. Helena I-40 Bladen County Surf City Topsail Island Hampstead Columbus County New Hanover county Brunswick County

  3. Project Drivers • Population 3,900 • Existing Wastewater Demand 450,000-500,000 GPD • Treatment Facility 750,000 GPD (NPDES Permit) • Master Plan Projected 1.25 MGD Wastewater Demand - Significant development interests in ETJ - Satellite annexation potential - Organic Growth

  4. Initial Alternatives Evaluated • Option 1 - Increase existing NPDES capacity • Option 2 - Land application • Option 3 - New NPDES to NE Cape Fear River Town of Burgaw

  5. Option 1 Expansion of WWTP & NPDES Discharge Burgaw Creek • NPDES Osgood’s Canal & Burgaw Creek • Burgaw Creek - 303d Biologically Impaired • Additional discharge capacity unlikely Osgood’s Canal US Hwy 117 Burgaw WWTP E. Wallace St.

  6. Option 2 Land Application Alternative Existing WWTP New Reclaimed Water FM Approximate Land Required 140-160 Acres Wetted Burgaw • Predominantly Poor Soils • Land intensive = Significant Costs • Multiple Sites Likely • Maintain Current 0.75 MGD NPDES • Estimated Project Costs $19.5M • Deemed Cost Prohibitive Village of St. Helena

  7. Option 3 New NPDES Permit – NE Cape Fear River Existing WWTP New Effluent FM Burgaw Potential Discharge To NE Cape Fear Village of St. Helena • TMDL Process On-going • Permit Approval Indeterminate • Estimated Project Cost $15M • Deemed Cost Prohibitive

  8. Regional Opportunity Greenevers • Town of Wallace WWTP Project - 4.4 MGD (Upgrade of existing industry WWTP) - Included Service to Teachey & Greenevers • Pender County 2 MGD Allocation - Opportunity to Partner with Pender County - Funding Opportunities (USDA, CWMTF, SRF) Teachey Wallace Rockfish Creek Duplin County Pender County Burgaw

  9. Proposed Project Town of Wallace WWTP Proposed Pump Station #2 Exit 390 US 117 24” Force Main Proposed Pump Station #1 Burgaw 20” Force Main Town of Burgaw • 1.25 MGD Burgaw • 2.0 MGD Total

  10. Project Costs & Funding **Decommissioned 0.75 MGD Plant **Rescinded NPDES Permit

  11. Project Infrastructure Pump Station No. 1 Two (2) 200 HP Pumps with VFD’s 1.25 MGD Capacity Pump Station No. 2 Three (3) 40 HP Pumps with VFD’s 2.0 MGD Capacity

  12. Project Infrastructure • Ten 20” & 24” HDD Installations • 55,000 Ft. 20” C-905 DR-18 PVC • 5,000 Ft 24” C-905 DR-18 PVC

  13. Emergency Wastewater Storage Option • Converted Tankage to Storage - 1.25 MG Storage Available - Permit Modification Acquired • Multiple Options to Divert - Utilize PS #1 Pumps - By-Pass Pump Connection • - Overflow to Influent PS Pump Station No. 1 And Force Main Oxidation Tanks Digester

  14. Regional Partners and Beneficiaries • Town of Burgaw – capacity, cost effective • Pender County – access to capacity • Town of Wallace – revenue, O&M • Town of Greenevers – rates • Town of Teachey - rates

  15. Questions

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