volume 1 - Halifax Regional Municipality

Halifax Water Integrated Resource Plan
Recommended IRP and Analysis
Table 6.1
Recommended IRP Components and Timing
IRP
Driver
IRP Objective
Recommended IRP Strategy
Asset
Renewal
Growth
8. Implement Optimal Level of Asset
Renewal.
9. Enhance the Reliability of Critical
Water and Wastewater Assets.
10. Evaluate Existing Stormwater System
Adequately Sized for Minor Storm
Conveyance.
11. Adapt to Future Climate Change.
12. Reduce Energy Consumption,
Operating Costs and Greenhouse Gas
Contributions.
13. Provide Regional Water, Wastewater
and Stormwater Infrastructure
Needed to Support Planned Growth.
14. Manage Flow Capacity Allocations.
• Enhanced asset renewal based on risk-based
composite asset renewal program balancing failure
consequences and renewal expenditures. The
composite specifies an individual level of renewal for
each asset category (See Volume 3, Appendix E).
• Implement water system security program based on
Five-Year Capital Plan modified through the IRP.
• Ten years for stormwater capacity evaluation
program.
• Three years for climate change program
development.
• Implement energy reduction projects based on the
Energy Management Plan as per the Five-Year
Capital Plan.
• Timing for wastewater projects/programs as per
RWWFP; timing for water projects/programs as per
IRP.
• I/I, water efficiency and other demand reduction
projects.
• Timing as per RWWFP or as previously programmed
in Five-Year Capital Plan.
The total 30-year NPV for the recommended plan inclusive of capital and O&M costs is
$2,579 million.
The timing of expenditures (in $2012) is shown in Figure 6.1, which indicates significant
expenditures around years 10, 20 and 30. This corresponds to the following projects:
• Year 10 – WWTF Nutrient Upgrades.
• Year 20 – WSER HHSP WWTF Upgrades.
• Year 30 – Enhanced Overflow Control Program.
Revision: 2012-10-29 Integrated Resource Plan 77
October 31 2012 Page 110 of 272