Jordan Lake Partnership Western Intake Feasibility Study 1

Jordan Lake Partnership Western Intake Feasibility Study 1

Presentation Outline 1. Background 2. Western Intake Feasibility Study 3. Next Steps 2

Jordan Lake Partnership (JLP) – Founded 2009 3

Western Intake Partners Western Intake Partners (WIP) are a subset of the Jordan Lake Partners Chatham County Durham OWASA Pittsboro Planning for potential collaborative development of water withdrawal, treatment, and transmission facilities on the west side of Jordan Lake 4

Jordan Lake Partnership (JLP) – Founded 2009 5

Jordan Lake Allocation Requests Applicant Management Current Commission Round 4 Future (2060) Environmental (EMC) initiated fourth allocation round in January 2010 Apex 32 39.2 41.4 Cary DWR published Jordan Lake Water Supply Storage Allocation Application 46.2 48.5 Morrisville Guidelines, Round Four in3.5June, 20133.5 3.6 Wake Co. RTP South Chatham County N Durham OWASA Holly Springs Orange County Hillsborough Pittsboro Raleigh Sanford TOTAL 3.5 6 10 5 2 1 0 0 0 0 63 3.5 3.5 13 16.5 5 2 1.5 1 6 0 0 91.2 18.2 16.5 5 2.2 2 1 6 0 0 99.4 6

Demand Curve and Project Phasing Demand Curve Ultimate Facilities Design: 54 MGD 60 50 Demand (mgd) 40 30 Initial Facilities Design: 33 MGD 20 10 0 2020 2030 2040 2050 2060 2070 Time 7

Water Demand Basis for Facility Design Partner Year 2040 Demand Basis for Initial Facilities Capacity (mgd) Year 2060 Demand Basis for Ultimate Facilities Capacity (mgd) Avg. Day Max. Day % of Total Capacity Avg. Day Max. Day % of Total Capacity Chatham County 6.5 10 30% 10.5* 16 30% Durham 16.5 17 52% 16.5 21 39% Orange County 1 1 3% 2 3 6% OWASA 2 2 6% 5 5 9% Pittsboro 2 3 9% 6 9 17% 28.0 33 100% 40 54 100% Total *Chatham County demands assume continued use of its existing 3 mgd WTF and the potential to realize reduced water demands as a result of recently implemented rate increases and/or other measures. 8

Western Intake Feasibility Study Develop and evaluate regional water supply project alternatives at a conceptual level A common element for all alternatives is a regional intake site and pumping station near Vista Point Intake Site Review institutional models under which the WIP could potentially implement the preferred alternative 9

Western Intake Feasibility Study Three conceptual Water Supply Alternatives Alternative 1 - Regional Water Treatment Facility Alternative 2 – Two Separate Water Treatment Facilities Alternative 3 - Raw Water Only Facilities 10

Alternative 1 – Regional Water Treatment Facility OWASA 2 mgd 2040 5 mgd 2060 Durham* 18 mgd 2040 24 mgd 2060 Chatham County 10 mgd 2040 16 mgd 2060 Pittsboro 3 mgd 2040 9 mgd 2060 Regional Water Treatment Facility 33 mgd 2040 54 mgd 2060 Water treatment facility on OWASA property at Jordan Lake Finished water delivered to each distribution system Regional Raw Water Pump Station 33 mgd 2040 54 mgd 2060 Jordan Lake 11

Alternative 2 – Two Separate Water Treatment Facilities Durham 18 mgd 2040 24 mgd 2060 OWASA 2 mgd 2040 50 mgd 2060 Chatham County 10 mgd 2040 16 mgd 2060 Pittsboro 3 mgd 2040 9 mgd 2060 Chatham County/Pittsboro Water Treatment Facility 13 mgd 2040 25 mgd 2060 OWASA/Durham Water Treatment Facility 20 mgd 2040 29 mgd 2060 Chatham County/Pittsboro WTP on OWASA property at Jordan Lake OWASA/Durham adjacent to South Durham Water Reclamation Facility Finished water delivered to each distribution system Regional Raw Water Pump Station 33 mgd 2040 54 mgd 2060 Jordan Lake 12

Alternative 3 – Raw Water Only Facilities OWASA’s Jones Ferry Road Water Treatment Plant 2 mgd 2040 5 mgd 2060 Chatham County 10 mgd 2040 16 mgd 2060 Pittsboro 3 mgd 2040 9 mgd 2060 Chatham County/Pittsboro Water Treatment Facility 13 mgd 2040 25 mgd 2060 Durham’s Williams Water Treatment Plant 18 mgd 2040 24 mgd 2060 Chatham County/Pittsboro WTP on OWASA property at Jordan Lake Durham’s allocation treated at the Williams WTP OWASA’s allocation treated at the Jones Ferry Road WTP Regional Raw Water Pump Station 33 mgd 2040 54 mgd 2060 Jordan Lake 13

Western Intake Feasibility Study Water treatment and pumping facilities are sized to meet maximum day demands in 2040 and assumed to be expanded in 2060 The intake and pipelines (which are costly to expand) are sized to meet 2060 maximum day demands 14

Total Capital Cost of Alternatives 1, 2, and 3 (2014 Million ) 450 M Initiial Capital Cost Portion Ultimate Capital Cost Portion 400 M Chatham County Durham 350 M Orange County OWASA 300 M Pittsboro Combined Cost 250 M 200 M 150 M 100 M 50 M 0 M Series1 Alternative 1: Regional Water Treatment Facility Alternative 2: South Durham and Jordan Lake Water Treatment Facilities Alternative 3: Raw Water Facilities

Project Alternatives Comparison Capital Costs (2014 Million ) Total Pipeline Length (ft) Relative Wetland and Stream Impacts Initial Facilities (2040) Ultimate Facilities (2060) Total Total Life Cycle Costs (2014 Million ) Alternative 1 – Regional Water Treatment Facility 243 74 317 694 151,000 Lowest Alternative 2 – Two Separate Water Treatment Facilities 297 75 345 752 200,000 Greater than Alt 1 Alternative 3 – Raw Water Only Facilities 341 71 412 1050 271,000 Greatest Alternative 16

Recommended Alternative Regional Water Treatment Facility OWASA 2 mgd 2040 5 mgd 2060 Durham 18 mgd 2040 24 mgd 2060 Cost Environmental Impacts Chatham County 10 mgd 2040 16 mgd 2060 Pittsboro 3 mgd 2040 9 mgd 2060 Regional Water Treatment Facility recommended based on: Regional Water Treatment Facility 33 mgd 2040 54 mgd 2060 Regional Raw Water Pump Station 33 mgd 2040 54 mgd 2060 Jordan Lake 17

Conceptual Project Schedule for Facilities Design and Construction Construction– Phase I Initial Facilities Design / Construction (33 MGD max day) Final Facilities Design / Construction (54 MGD max day) 18

Recommended Next Steps Conduct a Water Quality Monitoring Study Develop and execute an Interlocal Agreement (ILA) Establish a Technical Advisory Committee (TAC) Form a Policy Advisory Committee (PAC) 19

Questions / Comments?

Regional Water Treatment Facility – Conceptual Project Schedule 3.5 years to Design/Permit with concurrent activities 3 years to Construct with concurrent activities 21

Jordan Lake Allocation Requests All WIP Round 4 Level I Allocation applications: Identified a draft version of Regional Water Treatment Facility as the preferred alternative Stressed regional participation and collaboration Demonstration of a commitment by the WIP to planning and development of the regional approach will support the allocation requests 22