volume 1 - Halifax Regional Municipality

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Halifax Water Integrated Resource Plan Integrated Resource Plan Drivers and Objectives 4.4.1 Asset Inventory and Replacement Value For purposes of evaluating the current asset renewal program the replacement value of the Halifax Water assets were estimated. The cost estimation procedures are presented in Volume 3 Appendix C. Table 4.4 shows the estimated value of water, wastewater and stormwater assets. The total value of assets currently under management by Halifax Water is approximately $6.6 billion (i.e. $2012 replacement cost). This does not include buildings, land, IT, vehicles and other equipment. Approximately, $5.4 billion or 81% of the total is associated with linear assets (e.g. sewers and watermains) while $1.1 billion or 17% is associated with point facilities such as storage, treatment and pumping facilities. The remainder is associated with various appurtenances such as valves. Table 4.4 Infrastructure Inventory and Replacement Costs Asset Group Asset Number/ Length (1) Replacement Costs ($ million 2012) (2) Water Distribution Mains 1187 km $1,537 Water Transmission Mains 220 km $495 Appurtenances >93,100 $128 Water Wastewater Stormwater Water Pumping Stations 20 $47 Water Reservoirs 16 $140 Dams 6 $22 Water Supply Plants 9 $194 Water System Sub-Total $2,563 Sewers 1193 km $1,519 Trunk 145 km $483 Forcemains 90 km $138 Pumping Stations 172 $142 Treatment Facilities 15 $571 Wastewater System Sub-Total $2,853 Pipes 790 km $1,232 Culverts 8 km $15 Structures 29 $1 (3) Stormwater System Sub-Total $1,248 All Systems Total $6,664 Notes: 1. Due to data limitations linear infrastructure lengths are estimated (see Unit Cost Summaries - Volume 3 Appendix C and Data Collection/Gaps - Volume 3 Appendix D) 2. Based on costing procedures presented in Unit Cost Summaries, Halifax Water Integrated Resource Plan, Volume 3 Appendix C. 3. Replacement cost of stormwater pond inlet/outlet structures. Revision: 2012-10-29 Integrated Resource Plan 41 October 31 2012 Page 74 of 272
Halifax Water Integrated Resource Plan Integrated Resource Plan Drivers and Objectives 4.4.2 Asset Data Gaps The foundation of an efficient asset renewal program is a solid understanding of the asset inventory coupled with an understanding of current asset condition. This information along with cost data provides the ingredients to develop a well-founded program. A review of available asset information was carried out as part of IRP preparation. The data gaps identified are presented in Volume 3 Appendix D and summarized in Table 4.5. Table 4.5 System Distribution and Transmission Mains Hydrants, Valves, and Water Meters Water, Wastewater, and Stormwater System Asset Data Gaps All • Historical capital expenditure. Water Data Gap • Only about half of the water mains are digitized in GIS. • 39% of water main material is unknown. • 50% of all water mains have dates. • Main renewal data not available for 2009/10 and 2010/11. • 74% of hydrants, 20% of valves and 90% of water meters have installation dates. • There is no condition or performance data on hydrants, valves and water meters. Pumping Stations • No breakdown of assets to equipment/component level. • No data on pumping station failures and their impact on network service levels. Reservoirs • No condition data. Water Supply Plants • No breakdown of assets to equipment/component level. • No process/equipment installation dates. • No facility/equipment condition data. Wastewater Collection and Trunk Sewer • 248km of sewer (18%) is not on GIS. • Pipe Diameter – 25% of sewer length is unknown. • Material – 37% of sewers have unknown material. • Age data: 75% of sewers do not have an installation date. • No condition data. • No sewer flooding data. • Limited blockage and collapse data. • No data on the replacement/renewal rates of the collection system. Forcemains • 23km of forcemains (25%) are not on GIS. • Pipe Diameter – 26% of length is unknown. • Material – 37% have unknown material. • Age data: 58% of the forcemains do not have an installation date. • No break data linked to assets. • No condition data. • No renewal/replacement data. Pumping Stations • No breakdown of assets to equipment/component level. • No data on pumping station failures and their impact on network service levels. Wastewater Treatment Facilities • No breakdown of assets to equipment/component level. • No process/equipment installation dates. • No facility/equipment condition data. Revision: 2012-10-29 Integrated Resource Plan 42 October 31 2012 Page 75 of 272
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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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