volume 1 - Halifax Regional Municipality

Halifax Water Integrated Resource Plan
Appendices
TOR Requirement
3. IRP process will review, if necessary, the requirement for
augmenting the current water supply to meet growth
projections.
4. IRP process will integrate outputs from the ongoing
Regional Wastewater Functional Plan (RWWFP) for the
wastewater system, as it will provide a solid baseline
concerning existing conditions and available wastewater
system capacity (Different flow scenarios will be
examined as outlined in the RWWFP including dry
weather flows and a range of wet weather events as well
as a range of antecedent conditions). The RWWFP will
evaluate impacts on the existing collection system, using
growth projections provided by Halifax Regional
Municipality (HRM).
5. IRP process will document the existing responsibilities
for stormwater and seek clarity around organizational
jurisdiction for these elements on a go-forward basis.
IRP Reference
Section
4.2.1
Section
5.4.1
Sections
3.3.2 and 7.8
As noted in Section 4.2.1, major facilities that will require expansion due to growth include:
The Lake Major WSP will be well within the WSP capacity but reaching the maximum water
withdrawal permit limit at the end of 2046. There will be a need for exploring additional water
supplies beyond the 2046 horizon.
The potential demand at the Bennery Lake WSP is predicted to surpass the water source safe
yield and the maximum water withdrawal permit limit by 2016. The forecast demand is
projected to exceed the WSP’s capacity between 2021-2026. Therefore, during the timeframe
of the IRP there is a need to expand the Bennery Lake WSP, increase safe yield of lake (e.g.
using a dam or pumping from Grand Lake), and submit an application to NSE to request an
increase in the Water Withdrawal Permit.
Specific projects recommended by the RWWFP were integrated into Objectives 6, 13 and 14 of
IRP financial plan. The total capital cost of the RWWFP is estimated as $645 million ($2012). The
full details of the RWWFP expenditures are presented in Volume 1 Appendix E.
Halifax Water is responsible for operating and maintaining existing stormwater infrastructure
located within the street right-of-way (ROW) or easements owned by Halifax Water. New
stormwater infrastructure designed according to Halifax Water standards and developed as a result
of growth, becomes part of the stormwater asset base of Halifax Water. However, overall
stormwater planning and management remain the joint responsibility of the province (through NSE),
HRM, and Halifax Water. In detail, Halifax Water is responsible for the pipes and ditches in the street
right-of-way (ROW), and public easements. HRM is responsible for the overland flows (during major
storms), lot grading, and private property drainage. Watercourses, wetlands, and lakes are the
jurisdiction of Nova Scotia Environment. Halifax Water comments on any of the proposed
infrastructure that will become Halifax Water’s responsibility. Halifax Water, as a stakeholder,
provides input into stormwater decisions and infrastructure owned by others that may impact the
stormwater infrastructure owned by Halifax Water. Halifax Water also participates in revising
stormwater specifications. Figure 3.1 graphically illustrates the areas of stormwater responsibility.
Revision: 2012-10-29 Integrated Resource Plan –Appendices G-12
October 31 2012 Page 224 of 272