volume 1 - Halifax Regional Municipality

Halifax Water Integrated Resource Plan
IRP Planning Context and Levels of Service
stormwater flows to the Halifax Harbour. This will help to alleviate some capacity
constraints within the existing collection system.
• Existing sewers will be twinned along Albro Lake / Slayter Street to Old Ferry Road
PS to help divert flows away from the already constrained harbour-side sewers and
CSO facilities. New storage facilities will be provided at Shannon Park and Anderson
Lake to service those growth areas.
• The Old Ferry Rd PS and forcemain will need to be upgraded to accommodate
additional flows from projected growth, conveyed to the pumping station by the
new Albro Lake / Slayter Street sewer.
• The Dartmouth WWTF will need to be upgraded to accommodate future growth
flows within the Dartmouth service area.
• In Eastern Passage, localized sewerage upsizing will mitigate local system
constraints. A combination of increased storage at Bissett Lake Pumping Station
and a new pressure sewer line will accommodate growth flows, conveying them to
Eastern Passage WWTF, which is currently being upgraded and expanded.
The total capital cost of the RWWFP is estimated as $645 million ($2012). The RWWFP
expenditures were directly incorporated into the IRP using the timing as indicated in the
RWWFP. A summary of RWWFP expenditures is presented in Volume 1 Appendix E.
The RWWFP has presented a plan addressing growth driven wastewater servicing and
the mitigation of growth related overflows. The RWWFP represents an important step
forward in preparing a holistic strategy for wastewater management in Greater Halifax.
Nonetheless, there are additional wastewater planning dimensions that will need to be
merged with the RWWFP in future. They include:
• The incorporation of wet weather flow reduction measures (principally a realistic
made-in-Halifax I/I reduction program). This planning element should examine the
economic trade-offs between expanded capital facilities and flow reduction measures.
• The incorporation of water demand reduction in the planning of water and
wastewater facilities. This planning element should be merged with the I/I
reduction program and should examine the economic trade-offs between expanded
capital facilities and combined flow reduction measures.
• The expansion of the RWWFP overflow control program to include outfalls not
directly impacted by planned growth and to develop an overflow control strategy
prioritized by receiving water body.
• The implementation of additional storm drainage facilities in presently
underserviced areas. This program ties into the wet weather flow reduction
program as well as it provides an engineered outlet for on-lot footing drain and roof
Revision: 2012-10-29 Integrated Resource Plan 24
October 31 2012 Page 57 of 272