volume 1 - Halifax Regional Municipality

Halifax Water Integrated Resource Plan
Appendices
4.1.6 Basic Assumptions and Plan Considerations
TOR Requirement
1. IRP process will identify basic assumptions used for
supply-side and demand-side options and system
impacts related to aging infrastructure, capacity
issues, regulatory compliance, and growth. These
will be documented together with the proposed
resource plans.
2. IRP process will develop and document
appropriate level of reinvestment by each asset
class (options may include conventional dig and
replace as well as in-situ repairs and lining and
other trenchless techniques).
3. IRP process will document opportunities to
rationalize operational practices.
4. IRP process will identify system and facility
upgrades needed to comply with the CCME
Wastewater Regulations, anticipated sometime in
2012.
IRP Reference
Sections
4 and 5.6
Volume 1
Appendix F Volume
3 Appendices C
and D
Volume 1
Appendix F Volume
3 Appendix D
Sections
7.6 and 7.7
Section
4.3.2
Basic assumptions regarding future requirements are presented in Section 4 for all three
drivers. The assumptions surrounding asset renewal are provided in Volume 1 Appendix F and
Volume 3 Appendix E.
Costing assumptions are presented in Volume 3 Appendix C.
Financial modeling assumptions are provided in Section 5.6.
The Enhanced Asset Renewal program is presented in Volume 1 Appendix F and in Volume 3
Appendix E.
As a result of the IRP, Halifax Water is considering consolidating its system planning into
comprehensive master plans, which along with other planning activities feed into the IRP. The
concept is illustrated in Figure 7.3, Halifax Water IRP Planning Overview.
Table 7.5, Halifax Water Master Planning summarizes the proposed master planning initiatives
and gives their relationship to other existing and proposed planning programs and projects.
One of the IRP outcomes was the presentation of the 14 IRP planning objectives. Some of these
objectives are linked to current Halifax Water LOS. Table 7.7, Recommended LOS Updates or
Additions presents a series of recommendations for updating/expanding the current LOS to
allow a full evaluation of program implementation.
The updated/expanded LOS once developed will require support for LOS monitoring, data
analysis and reporting. Halifax Water will need to consider the impact on operating staff for this
additional data collection, analysis, and reporting.
The three HHSP facilities will require upgrades to meet the recently promulgated federal
Wastewater Systems Effluent Regulations (WSER). Halifax Water has recently completed a risk
assessment indicating that under the WSER, all three facilities will be required to upgrade to full
secondary treatment. Halifax and Dartmouth WSER upgrades were deemed to require upgrade
within 20 years and Herring Cove with 30 years; however, with the RWWFP redirecting flows to
the Herring Cove WWTF, it will require upgrade to a medium facility, thus requiring an upgrade
to secondary within the 20 year IRP planning horizon.
Revision: 2012-10-29 Integrated Resource Plan –Appendices G-18
October 31 2012 Page 230 of 272