volume 1 - Halifax Regional Municipality
volume 1 - Halifax Regional Municipality volume 1 - Halifax Regional Municipality
Initial Resource Plans Intermediate Resource Plans Refined Resource Plans Short-List Resource Plans Bundle 1 Bundle 2 Bundle 3 Bundle 4 1-1 ($1,943) 2-1 ($2,113) 3-1 ($2,746) 4-1 ($2,915) 5-1 ($2,461) 6-1 ($1,951) 7-1 ($2,448) 8-1 ($2,014) 9-1 ($2,184) 10-1 ($2,818) 11-1 ($2,987) 12-1 ($2,532) 13-1 ($2,022) 14-1 ($2,520) 15-1 ($1,962) 16-1 ($2,129) 17-1 ($2,765) 18-1 ($2,932) 21-1 ($2,466) 19-1 ($2,479) 20-1 ($1,979) 22-1 ($2,033) 23-1 ($2,200) 24-1 ($2,837) 25-1 ($3,003) 28-1 ($2,538) 26-1 ($2,550) 27-1 ($2,050) Bundles 1 and 2 were eliminated from further consideration during the Initial Plan analysis As Per RWWFP Plans Modified RWWFP Plans As Per RWWFP Plans Modified RWWFP Plans 15-2 ($2,011) 16-2 ($2,129) 17-2 ($2,815) 18-2 ($2,932) 21-2 ($2,466) 31-2 ($2,528) 29-2 ($2,066) 22-2 ($2,083) 23-2 ($2,200) 24-2 ($2,886) 25-2 ($3,003) 28-2 ($2,537) 35-2 ($2,599) 33-2 ($2,137) 30-2 ($2,083) 32-2 ($2,200) 34-2 ($2,886) 36-2 ($3,003) Four additional plans added to allow for examination of the full range of asset renewal and wastewater compliance timing Objective 1, 3, and 4 project timing non-variable. Eliminated from further analysis. Objective 1, 3, and 4 project timing non-variable. Eliminated from further analysis. 15-3 ($2,403) 16-3 ($2,520) 21-3 ($2,458) 22-3 ($2,474) 23-3 ($2,592) 28-3 ($2,529) 37-3 ($2,421) 38-3 ($2,507) 39-3 ($2,492) 40-3 ($2,579) Four additional plans added to allow for examination of wastewater compliance timing and the future level of overflow Figure 5.2 Plan Formulation and Evaluation Eliminated from further analysis. Eliminated from further analysis. 21-4 ($2,458) 28-4 ($2,529) 38-4 ($2,507) 40-4 ($2,579) Eliminated from further analysis due to deficiency of Enhanced Overflow Control Program. In consideration of the benefits of nutrient control, particularly on the smaller receiving waters, and the schedule of expansions and upgrades in the later planning period, a 10-year or 10 plus year timing for nutrient control seems reasonable. Hence, the A level plans (38-4 and 40-4) were given further consideration. *Recommended Alternative Resource Plan (40-4) The Enhanced Overflow Control Program has an additional 30- year NPV of $71 million when compared to the Baseline plan in the RWWFP. The implementation timing of the program has been fixed at 30 years and provides additional control at 59 outfalls not addressed through the RWWFP. October 31 2012 Page 92 of 272
Halifax Water Integrated Resource Plan Integrated Resource Plan Development and Evaluation Table 5.4 Initial Alternative Resource Plan Variations Driver Objective Infrastructure System Variation 1. Meet Current Nova Scotia Environment WWTF Permit to Operate Wastewater Time frame to implement current compliance requirements A – 3 years, B – 5 years, C – 7 years 2. Meet Current Nova Scotia Environment WSP Permit to Operate Water Currently in full compliance No variation considered 3. Meet Current Overflow Compliance Wastewater Time frame to implement current compliance requirements A – 5 years, B – 10 years, C – 15 years Time frame to implement future WSER compliance requirements for HHSP facilities A – 20 years, B – 20 years, C – 30 years Time frame to implement future nutrient compliance requirements for WWTFs discharging to limited or sensitive receiving waters Compliance 4. Meet Future WWTF Compliance Wastewater A – 10 years, B – 20 years, C – 30 years Nutrient reduction strategy Option 1 – Upgrade 9 WWTFs plus BLT upgrade already under way – designated “Modified RWWFP” Option 2 – Upgrade 8 WWTFs plus BLT upgrade already under way (interim) and divert Springfield Lake and BLT WWTFs (long-term) as per the RWWFP – designated “ RWWFP” 5. Meet Future Drinking Water Compliance Water Implementation within 5 years as per the HW Five-Year Capital Plan Option 1 – “Baseline” program was based on the RWWFP and utilized RWWFP timing set by growth demands 6. Meet Future Overflow Compliance Wastewater Option 2 – “Enhanced” program included additional overflow control that incorporated RWWFP measures plus additional controls. The Enhanced program employed RWWFP timing for the RWWFP recommended measures and a 30- year implementation for the enhanced measures developed through the IRP. 7. Meet Future Stormwater Quality Compliance Stormwater Implementation timing of 3 years is for stormwater quality program development Revision: 2012-10-29 Integrated Resource Plan 60 October 31 2012 Page 93 of 272
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Initial Resource Plans Intermediate Resource Plans Refined Resource Plans Short-List Resource Plans<br />
Bundle<br />
1<br />
Bundle<br />
2<br />
Bundle<br />
3<br />
Bundle<br />
4<br />
1-1 ($1,943)<br />
2-1 ($2,113)<br />
3-1 ($2,746)<br />
4-1 ($2,915)<br />
5-1 ($2,461)<br />
6-1 ($1,951)<br />
7-1 ($2,448)<br />
8-1 ($2,014)<br />
9-1 ($2,184)<br />
10-1 ($2,818)<br />
11-1 ($2,987)<br />
12-1 ($2,532)<br />
13-1 ($2,022)<br />
14-1 ($2,520)<br />
15-1 ($1,962)<br />
16-1 ($2,129)<br />
17-1 ($2,765)<br />
18-1 ($2,932)<br />
21-1 ($2,466)<br />
19-1 ($2,479)<br />
20-1 ($1,979)<br />
22-1 ($2,033)<br />
23-1 ($2,200)<br />
24-1 ($2,837)<br />
25-1 ($3,003)<br />
28-1 ($2,538)<br />
26-1 ($2,550)<br />
27-1 ($2,050)<br />
Bundles 1 and<br />
2 were<br />
eliminated<br />
from further<br />
consideration<br />
during the<br />
Initial Plan<br />
analysis<br />
As Per RWWFP Plans<br />
Modified<br />
RWWFP Plans<br />
As Per<br />
RWWFP Plans<br />
Modified<br />
RWWFP Plans<br />
15-2 ($2,011)<br />
16-2 ($2,129)<br />
17-2 ($2,815)<br />
18-2 ($2,932)<br />
21-2 ($2,466)<br />
31-2 ($2,528)<br />
29-2 ($2,066)<br />
22-2 ($2,083)<br />
23-2 ($2,200)<br />
24-2 ($2,886)<br />
25-2 ($3,003)<br />
28-2 ($2,537)<br />
35-2 ($2,599)<br />
33-2 ($2,137)<br />
30-2 ($2,083)<br />
32-2 ($2,200)<br />
34-2 ($2,886)<br />
36-2 ($3,003)<br />
Four additional plans added to<br />
allow for examination of the full<br />
range of asset renewal and<br />
wastewater compliance timing<br />
Objective 1, 3, and 4<br />
project timing non-variable.<br />
Eliminated from further analysis.<br />
Objective 1, 3, and 4<br />
project timing non-variable.<br />
Eliminated from further analysis.<br />
15-3 ($2,403)<br />
16-3 ($2,520)<br />
21-3 ($2,458)<br />
22-3 ($2,474)<br />
23-3 ($2,592)<br />
28-3 ($2,529)<br />
37-3 ($2,421)<br />
38-3 ($2,507)<br />
39-3 ($2,492)<br />
40-3 ($2,579)<br />
Four additional plans added to<br />
allow for examination of<br />
wastewater compliance timing<br />
and the future level of overflow<br />
Figure 5.2 Plan Formulation and Evaluation<br />
Eliminated from further analysis.<br />
Eliminated from further analysis.<br />
21-4 ($2,458)<br />
28-4 ($2,529)<br />
38-4 ($2,507)<br />
40-4 ($2,579)<br />
Eliminated from<br />
further analysis<br />
due to deficiency<br />
of Enhanced<br />
Overflow Control<br />
Program.<br />
In consideration of the benefits of nutrient control, particularly on<br />
the smaller receiving waters, and the schedule of expansions and<br />
upgrades in the later planning period, a 10-year or 10 plus year<br />
timing for nutrient control seems reasonable. Hence, the A level<br />
plans (38-4 and 40-4) were given further consideration.<br />
*Recommended<br />
Alternative<br />
Resource Plan<br />
(40-4)<br />
The Enhanced Overflow Control Program has an additional 30-<br />
year NPV of $71 million when compared to the Baseline plan in<br />
the RWWFP. The implementation timing of the program has been<br />
fixed at 30 years and provides additional control at 59 outfalls not<br />
addressed through the RWWFP.<br />
October 31 2012 Page 92 of 272