Contents
Section Page
TOC-1
Executive Summary ... ES-1 1 Introduction ... 1-1 1.1 Project Description ... 1-2 1.2 The Regional Setting ... 1-2 1.3 Water Resources Infrastructure for Apex, Cary, Morrisville, and RTP South ... 1-4 1.4 Water Resources Planning History ... 1-5 1.5 Long Range Water Resources Plan Organization ... 1-6 2 Identifying the Needs for the Future ... 2-1 2.1 Historical Water Demand ... 2-1 2.2 Baseline Future Water Demand ... 2-3 2.3 Water Demand vs. Water Supply Capacity ... 2-6 2.4 Baseline Future Wastewater Flows ... 2-8 2.5 Wastewater Flows vs. Treatment Capacity ... 2-8 2.6 Interbasin Transfer ... 2-11 3 The Planning Process ... 3-1 3.1 Informal Survey of Leaders in Water Resources Management ... 3-2 3.2 Ideas Exchange Workshop ... 3-3 3.3 Decision Framework ... 3-4 3.4 Targeted Technical Evaluations ... 3-7 3.5 Initial Water Resources Strategies and Screening ... 3-7 3.6 Scenario Planning – A Shared Vision of the Future ... 3-11 3.7 Strategies Prioritization ... 3-14 3.8 Most Viable Water Resources Strategies ... 3-17 4 Water Resources Portfolio... 4-1 4.1 Strategy 1 – Increase Water Supply via Jordan Lake Allocation ... 4-2 4.2 Strategy 2 – Increase Water Supply and/or Storage by Other Means ... 4-3 4.3 Strategy 3 – Increase Water Supply and/or Storage via Interconnections ... 4-8 4.4 Strategy 4 – Integrated Master Planning and Strategic Utility Resource
Utilization ... 4-9 4.5 Strategy 5 – Best Management Practices ... 4-12 4.6 Residential Customer Water Bill Evaluation ... 4-17 4.7 Strategy Summary ... 4-19 5 Implementation Plan ... 5-1 5.1 Water Supply and Treatment ... 5-1 5.2 Water Resources Management Strategies ... 5-9 5.3 Wastewater Treatment ... 5-13 5.4 Monitoring and Re-appraisal of the Water Resources Portfolio ... 5-19 6 References ... 6-1
CONTENTS
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List of Appendices
A1 Town of Cary, Morrisville and RTP South Baseline Water Demand Wastewater Flow Projections Technical Memorandum
A2 Town of Apex, Cary, Morrisville and RTP South Baseline Interbasin Transfer Projections Technical Memorandum
A3 Probabilistic Water Demand Forecast – Technique and Input Variable Summary B Town of Apex Baseline Water Demand Wastewater Flow Projections Technical
Memorandum
C Long Range Water Resources Plan – Informal Survey of Other Utilities Technical Memorandum
D Long Range Water Resources Plan - Ideas Exchange Workshop Summary E Town of Cary & Town of Apex Water Resources Background Memorandum F1 The Potential of Resource Recovery Technical Memorandum
F2 Town of Cary and Town of Apex Levels of Service Review Technical Memorandum F3 Review of Regional Water Supply Potential Technical Memorandum
F4 Discussion on System Reliability White Paper G Water Resources Strategies – Long List
H1 Water Resources Strategy Screening Results Total Benefit Score Bar Chart
H2 Water Resources Strategy Screening Participant Raw Score Box-and-Whisker Plot H3 Water Resources Strategy Screening Bottom 20 Summary Table
H4 Water Resources Strategy Screening Top 20 Summary Table I Future Scenario Planning Summary
J Water Resources Strategy Prioritization - Strategy Evaluation Matrix K Water Resources Strategy Development Technical Memorandum
L Town of Cary Strategic Reclaimed Water System Plan Technical Memorandum
M Town of Cary Conservation Program Evaluation and Future Considerations Technical Memorandum
N1 LRWRP Strategy Evaluation - Rate Model Data Input Assumptions Memorandum N2 Town of Cary Water Meter and Usage Data
N3 Schedule of Capital Expenditures by LRWRP Strategy, Total costs and Town of Cary costs N4 Schedule of Operating Expenditures by LRWRP Strategy, Town of Cary only
N5 Schedule of Debt Service Payments by LRWRP Strategy
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Acronyms and Abbreviations
ADSM alternative demand side management
AMI Advance Metering Infrastructure
AWWA American Water Works Association
AWWARF American Water Works Association Research Foundation
BCE Business Case Evaluation
BMPs Best Management Practices
CAMPO Capital Area Metropolitan Planning Organization
CFHM Cape Fear River Hydrologic Model
CFRB Cape Fear River Basin
CMUD Charlotte-Mecklenburg Utilities Department
CIP Capital Improvement Program
DENR North Carolina Department of Environmental and Natural Resources
DWQ North Carolina Division of Water Quality
DWR North Carolina Division of Water Resources
EA Environmental Assessment
EIS Environmental Impact Statement
EMC Environmental Management Commission
IBT Interbasin Transfer
JL Jordan Lake
JLP Jordan Lake Partnership
Kerr Lake John H Kerr Reservoir
LID Low Impact Development
LRWRP Long Range Water Resources Plan
MDD maximum day demand
MODA multi-objective decision analysis
mgd million gallons per day
NCAC North Carolina Administrative Code
ACRONYMS AND ABBREVIATIONS
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NEPA National Environmental Policy Act
NPDES National Pollutant Discharge Elimination System
NPV Net Present Value
OWASA Orange Water and Sewer Authority
PWSS Public Water Supply Section
RDU Raleigh-Durham International Airport
RTP Research Triangle Park
RWS Regional Water Supply
SAP Senior Advisory Panel
SAWS San Antonio Water System
SCIMPs Secondary and Cumulative Impact Management Plans
SEPA State Environmental Policy Act
SRWSP Strategic Reclaimed Water System Plan
TAZ Traffic Analysis Zone
TJCOG Triangle J Council of Government
TM Technical Memorandum
UDO Unified Development Ordinance
USACE US Army Corps of Engineers
WRF Water Reclamation Facility
WTP Water Treatment Plant
WWTP Wastewater Treatment Plant