volume 1 - Halifax Regional Municipality

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Halifax Water Integrated Resource Plan Integrated Resource Plan Development and Evaluation The asset renewal program evaluation in the IRP was conducted in two steps. Initially, three levels of asset renewal were considered for all point and linear assets. The levels of asset renewal for point assets were: • A – 0.8 x asset service life • B – 1.0 x asset service life • C – 1.2 x asset service life The levels of asset renewal for linear assets were: • A – Decreasing average asset life at end-of-period • B – No change in average asset life at end-of-period • C – Increasing average asset life at end-of-period These levels (A to B to C) notionally corresponded to an increasing risk of not meeting LOS and IRP objectives. The first stage of the IRP analysis explored the above monolithic risk level for all asset systems (i.e. water, wastewater and stormwater) and all asset classes within each system (e.g. water – distribution mains). Asset renewal requirements were generated using a proprietary asset renewal model. The asset renewal model evaluated the age of every asset at every model time step and then compared this age with service life of the asset. If the age in the time step exceeded the service life of the asset, the asset was replaced. Ideally, replacement decisions should be based on asset condition information not just on service life alone. In actuality, an asset management program would employ a range of interventions from repair through rehabilitation to extend asset service life rather than always replacing assets at their service life limits. However, given the limitations of available asset data (see Section 4), service life was used as a reasonable surrogate. This analysis was carried out for each year of the 30-year planning period from 2013 to 2043. This provided a year-by-year asset renewal program cost, which was incorporated into the overall financial model. The details of the asset renewal modeling procedures used to estimate the asset renewal costs are presented in Volume 3 Appendix E. As is explained later in this Section, the initial and intermediate alternative resource plans used the A, B, C analysis described above. Later in the formulation and evaluation of alternative resource plans it was decided to use asset specific risk based renewal rules for each asset type. The resulting overall asset renewal strategy was designated as “composite” since it was formed from the individual asset strategies. Revision: 2012-10-29 Integrated Resource Plan 51 October 31 2012 Page 84 of 272
Halifax Water Integrated Resource Plan Integrated Resource Plan Development and Evaluation Table 5.2 Current Halifax Water Programs and Projects 2013 -2043 Program Description Capital ($2012) Five-Year Capital Plan Capital Program Continuation Asset Management Assessment (AMA) Program Wastewater Compliance RWWFP I/I Program • Years 2-5 (2013 -2017) of the Five-Year Capital Plan were included in the IRP • Additional capital expenditures beyond 2017 for projects initiated in the Five-Year Capital Plan • Halifax Water in 2011 finalized the Asset Management Assessment (AMA). The AMA Project document recommended 22 initiatives to be implemented over five years (2012 – 2016) • 2013 -2017 included in Five Year-Capital Plan • Five-Year Capital Budget plus program continuation into Years 6-10 aimed at WWTF and overflow compliance • RWWFP addresses future wastewater capacity to accommodate planned growth as well as offsetting the impacts of growth on overflows • The Five-Year Capital Plan and the RWWFP contain a significant number of projects aimed at I/I reduction. • $200.1 million • $410.4 million • $ 3.0 million (2012-2016) • $ 13.6 million (2017- 2043) • $58.3 million current WWTF compliance • $37.3 million current overflow compliance • $645.3 million • $122 million Energy Management Plan Water Quality Master Plan • Through its newly launched Energy Management Program, Halifax Water has committed to creating and ensuring an on-going focus on sustainability and energy efficiency throughout all operating areas. This new program serves to define the goals, objectives, accountabilities, and structure for activities related to sustainability and responsible energy use. • 2013 -2017 included in Five-Year Capital Plan • The Halifax Water WQMP has been a key tool in establishing drinking water quality goals and setting a baseline for monitoring progress toward these goals. • 2013 -2017 included in Five-Year Capital Plan • $ 2.4 million • $ 0.6 million Dalhousie Water Research Collaboration • Halifax Water collaborates with Dalhousie University on water treatment research • 2013 -2017 included in Five-Year Capital Plan • $ 4.2 million The details of the Enhanced Asset Renewal Program as well as some other new programs shown in Table 5.3 are presented in Volume 1 Appendix F. In addition to these new and existing capital programs there are recommended changes to infrastructure master planning integrating the IRP into the business processes of Halifax Water. These recommended changes are discussed in more detail in Section 7 under the IRP Implementation Plan. Revision: 2012-10-29 Integrated Resource Plan 52 October 31 2012 Page 85 of 272
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VOLUME 1: INTEGRATED RESOURCE PLAN
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Halifax Water Integrated Resource P
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Capital Expenditure Program All $ i
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Recommended Alternative Resource Pl
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Financial Model 40-4 Halifax Water
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Financial Model 40-4 2.512 (O&M) Lo
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Financial Model 40-4 1.028 Cavalier
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Financial Model 40-4 3.511 Stokil (
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Financial Model 40-4 2.075 Beaver C
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Financial Model 40-4 2.848 Storage
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Summary of Capital, Operational and
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Asset Renewal Costs Halifax Water I
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Asset Renewal Costs Stormwater Asse
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Statement Concerning Halifax Water
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Statement Concerning Halifax Water
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volume 1 - Halifax Regional Municipality

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