volume 1 - Halifax Regional Municipality
volume 1 - Halifax Regional Municipality volume 1 - Halifax Regional Municipality
Halifax Water Integrated Resource Plan Appendices • Impacts of future climate on the water, wastewater and stormwater infrastructure • Recommendations for changes in infrastructure design and operating practices to mitigate and adapt to future climate change • Coordination and integration with the development of the Wet Weather System Plan and Water and Wastewater Master Plans The Recommended IRP includes an early assessment project to further examine climate change impacts. The budgeted amount for this assessment is $0.7 million ($2012). 1.1.3 Energy Management 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. In support of this new program, Halifax Water issued its new Energy Management Policy in June 2011. This policy defines longer-term goals and commits Halifax Water to the principles of responsible energy management including reducing dependence on fossil fuels through energy conservation and best practices; identifying and implementing costeffective energy-reduction initiatives throughout our operations; developing alternative and renewable forms of energy from utility assets; and reducing pollution by increasing the usage of energy supplied from sources that are less greenhouse gas intensive. Reporting to the Energy Management Steering Committee (EMSC) on a monthly basis, the Manager, Energy Efficiency is responsible for the creation and implementation of the corporate Energy Management Action Plan (EMAP) and any other activities defined by the EMSC. Reporting typically consists of progress reports on the energy-related activities of Halifax Water including details of energy consumption, key performance indicators, and progress on energy projects and other related activities. It is believed that this program will be self-sustaining financially using on-going savings gained through energy reduction and generation projects to fund operating expenses and program initiatives. One of the main tools used in any energy-management program is the energy audit. This can range from a quick, low-level scoping audit to a complex, detailed investment-level audit. To date, mid-level audits are being completed for the three Harbour Solutions WWTFs (Halifax, Dartmouth, and Herring Cove), Mill Cove WWTF, J.D. Kline WSP, and Lake Major WSP. These audits will endeavour to identify potential energy-reduction projects, will provide enough detail to allow a base-level indication of feasibility and project complexity, and will allow the identification and prioritization of projects with the most potential for success and savings to be included in the capital budget over the next five years. Revision: 2012-10-29 Integrated Resource Plan –Appendices F-3 October 31 2012 Page 182 of 272
Halifax Water Integrated Resource Plan Appendices From these mid-level audits, a significant number of energy-reduction opportunities have been identified thus far. These opportunities have the potential to generate significant energy and financial savings in the future. A preliminary list of opportunities identified to date along with an estimate of their implementation status, potential savings, cost benefits, and environmental benefits has been compiled including wind energy (J.D. Kline plant, Lake Major, and Long Lake), hydrokinetic turbines (Robie Street Control Chamber in Halifax and Orchard Control Chamber in Bedford), energy recovery (hydrokinetic turbines, heat exchangers and highly efficient industrial heat pumps, and use of bio-gas). A number of improvements have been proposed through the Halifax Water Five-Year Capital Plan primarily for the period 2013 to 2017. Recommendations regarding energy related Levels of Service (LOS) are presented in Volume 1 Section 7 under the Implementation Plan. 1.2 CURRENT WASTEWATER SYSTEM PROGRAMS 1.2.1 Current Wastewater WWWTF and Overflow Compliance There are a number of projects associated with current WWTF and overflow compliance in the Halifax Water Five-Year Capital Plan 3 . The WWTF projects are discussed under a comprehensive compliance program presented in Section 4. The project costs and timing associated with current overflow compliance are presented in the financial model for the Recommended Plan located in Volume 1 Appendix H. In the Five-Year Capital Plan, there is approximately $61.2 million identified for the current WWTF compliance program. The overall capital cost of the current overflow compliance program is $47.7 million ($2012). Major expenditures are associated with collection system upgrades in a number of sewersheds with particular emphasis on sewersheds having high inflow and infiltration (I/I) flows. 1.2.2 Current I/I Program Halifax Water staff has carried out significant research to identify appropriate techniques to address inflow and infiltration and particularly to establish policy and best practices based on successful examples in other jurisdictions. Industry experience indicates that approximately 50% to 80% of I/I originates from the private system. Halifax Water has estimated the rate of I/I attributable to private side infrastructure approximately 50% mark. To that end, Halifax Water has introduced its Stormwater Inflow Reduction (SIR) program to find ways to reduce private-side contributions to the wastewater system. 3 Halifax Water Five-Year Business Plan 2012-2013 to 2016-2017, Halifax Water, December 2011 Revision: 2012-10-29 Integrated Resource Plan –Appendices F-4 October 31 2012 Page 183 of 272
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<strong>Halifax</strong> Water Integrated Resource Plan<br />
Appendices<br />
From these mid-level audits, a significant number of energy-reduction opportunities<br />
have been identified thus far. These opportunities have the potential to generate<br />
significant energy and financial savings in the future. A preliminary list of opportunities<br />
identified to date along with an estimate of their implementation status, potential<br />
savings, cost benefits, and environmental benefits has been compiled including wind<br />
energy (J.D. Kline plant, Lake Major, and Long Lake), hydrokinetic turbines (Robie Street<br />
Control Chamber in <strong>Halifax</strong> and Orchard Control Chamber in Bedford), energy recovery<br />
(hydrokinetic turbines, heat exchangers and highly efficient industrial heat pumps, and<br />
use of bio-gas).<br />
A number of improvements have been proposed through the <strong>Halifax</strong> Water Five-Year<br />
Capital Plan primarily for the period 2013 to 2017. Recommendations regarding energy<br />
related Levels of Service (LOS) are presented in Volume 1 Section 7 under the<br />
Implementation Plan.<br />
1.2 CURRENT WASTEWATER SYSTEM PROGRAMS<br />
1.2.1 Current Wastewater WWWTF and Overflow Compliance<br />
There are a number of projects associated with current WWTF and overflow compliance<br />
in the <strong>Halifax</strong> Water Five-Year Capital Plan 3 . The WWTF projects are discussed under a<br />
comprehensive compliance program presented in Section 4. The project costs and<br />
timing associated with current overflow compliance are presented in the financial<br />
model for the Recommended Plan located in Volume 1 Appendix H. In the Five-Year<br />
Capital Plan, there is approximately $61.2 million identified for the current WWTF<br />
compliance program. The overall capital cost of the current overflow compliance<br />
program is $47.7 million ($2012). Major expenditures are associated with collection<br />
system upgrades in a number of sewersheds with particular emphasis on sewersheds<br />
having high inflow and infiltration (I/I) flows.<br />
1.2.2 Current I/I Program<br />
<strong>Halifax</strong> Water staff has carried out significant research to identify appropriate<br />
techniques to address inflow and infiltration and particularly to establish policy and best<br />
practices based on successful examples in other jurisdictions. Industry experience<br />
indicates that approximately 50% to 80% of I/I originates from the private system.<br />
<strong>Halifax</strong> Water has estimated the rate of I/I attributable to private side infrastructure<br />
approximately 50% mark. To that end, <strong>Halifax</strong> Water has introduced its Stormwater<br />
Inflow Reduction (SIR) program to find ways to reduce private-side contributions to the<br />
wastewater system.<br />
3 <strong>Halifax</strong> Water Five-Year Business Plan 2012-2013 to 2016-2017, <strong>Halifax</strong> Water,<br />
December 2011<br />
Revision: 2012-10-29 Integrated Resource Plan –Appendices F-4<br />
October 31 2012 Page 183 of 272