volume 1 - Halifax Regional Municipality

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Halifax Water Integrated Resource Plan Integrated Resource Plan Development and Evaluation procedures are presented in Volume 3 Appendix C. All capital costs presented for the RWWFP have been harmonized with regard to costing procedure used by the IRP. All capital costs are presented in $2012 using an ENRCC Index value of 9200. • Additional (change in) O&M costs were developed using the procedures described in Volume 3 Appendices B and C. The costs account for labour, energy, and chemicals as well as such consumables as UV bulbs and membrane filter cartridges. Additional O&M costs for upgrade/expansion projects were started the year after the project was implemented. • All programs/projects and O&M costs were allocated to one or more IRP objectives. The cost split among objectives was based on best professional judgment. The splits are recorded in the financial models presented in Volume 3 Appendix F. • The Enhanced Overflow Control Program was allocated in total to Objective 6. The asset renewal costs arising from the asset renewal modeling were allocated to Objective 8. These program costs incorporated the Halifax Water Five-Year Capital Plan specific asset renewal projects. The RWWFP costs were allocated primarily to Objective 13 reflecting the need to offset the impacts of growth on the existing wastewater system. Some RWWFP costs were however allocated to Objectives 6 and 14. 5.7 PLAN FORMULATION AND EVALAUTION OVERVIEW Considering the key drivers - regulatory compliance, asset renewal and growth - an initial set of 28 alternative resource plans were developed to meet the water, wastewater, and stormwater service needs of Halifax Water's service areas through to the year 2043. The initial plans reflected variations on the timing and nature of wastewater system compliance; levels of asset renewal investment, and the degree of overflow control. The initial plans were evaluated in terms of their 30-year net present value (NPV) cost, their compliance timing, and their potential environmental and public health impacts. Based on this analysis, 18 intermediate plans worthy of further consideration were identified. Using a single composite asset renewal strategy, redundant intermediate plans were eliminated and 10 refined plans were developed. The 30-year NPV at this stage in the alternative resource plan development and analysis was similar for all resource plans. Based on environmental and public health impacts the 10 refined plans were further reduced to 4 short-list plans. A recommended plan was selected from the 4 short-list plans based on the benefits of nutrient control and the enhanced overflow control program. Revision: 2012-10-29 Integrated Resource Plan 57 October 31 2012 Page 90 of 272
Halifax Water Integrated Resource Plan Integrated Resource Plan Development and Evaluation An overview of alternative plan formulation and the changes in the plans as they went from the 28 initial plans to the Recommended IRP are shown in Figure 5.2. 5.8 INITIAL RESOURCE PLAN FORMULATION AND EVALUATION 5.8.1 Initial Resource Plan Formulation The programs and program elements discussed in Section 5.4 were organized into 28 initial alternative resource plans. The 28 plans provided the full span of variations in the implementation of programs and program elements. Table 5.4 presents the variations incorporated in the development of the initial alternate resource plans. Revision: 2012-10-29 Integrated Resource Plan 58 October 31 2012 Page 91 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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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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