HomeMy WebLinkAbout03.b. (Handout) BCE Alternatives and Options Evaluated at Orinda Crossroads and Moraga PS spreadsheet [Meeting Handout]
BCE ALTERNATIVES AND OPTIONS EVALUATED FDF Item 3.b.
(Attachment 8)
ORINDA CROSSROADS AND MORAGA PS
- �- _ • � 7W
•. Description Applicability Estimated Applicability Estimated Size of New Powers PS Powers Wet Powers Dry New Standby to Wet Wet Normal Under Pumps Available
of Option of Option Construction of Option Construction Standby GEN Lighting Weather Weather Power All PS Weather Weather Operation Emergency under
Cost Cost Pump(s) Pumps Electrical Needs Pump 1 Pump 2 Power Emergency
(ln Qtr. (1st Qtr. a.Orinda Operation Power Operating
2018$) 2018$) b.Moraga a.Orinda Condition
b.Moraga
Keep YES $7.12 M YES $8.10 M 250 KW OC(3) YES YES YES Keep Replace a.0.45 to 22.3 Both Wet
Engines 300 KW (1 pump= Caterpillar Waukesha b.0.71 to 14.4 Weather Pumps
Moraga PDWF) with a new on engines
Engine (Two(2)pumps
at each PS)
+One Dry
Weather Pump
(generator)
(One(1)pump at
each PS)
All Electric YES $8.00 M YES $9.02 M 750 KW OC YES YE 5 YES YES Replace Replace a.0.45 to 22.3 a.0.45 to 22.3 All Pumps Dry
650 KW Caterpillar Waukesha b.0.71 to 14.4 and Wet
Moraga with with electric Weather
electric motor and b.0.71 to 14.4 (5)pumps at
motor and VFD each PS on
VFD standby
1* generator
Electric- YES $7.56 M YES $8.65M 250 KW OC(2) YES YES YES YE5 Keep Replace a.0.45 to 22.3 Three Dry
Hybrid 300 KW Caterpillar Waukesha b.0.71 to 14.4 weather pumps
($8.66 M(4)) ($9.75 M(4)) Moraga(2) with electric &One Wet
motor and weather pump
VFD on standby
generator and
One Wet
Weather on
engine
Relocate PS YES $30 M+ NO N/A 750 KW YES YES YES YES New New pump a.0.45 to 22.3 All Pumps Dry
pump with electric b.0.71 to 14.4 and Wet
with motor and Weather
electric VFD (5)pumps at PS
motor and on standby
VFD generator
Abandon PS YES $39M-$72M NO N/A N/A N/A N/A N/A N/A N/A N/A a.0.45 to 22.3 N/A
and convert b.0.71 to 14.4
NbL # to Gravity
tr is Minimize YES $6.96M YES $8.0E•ry 75 KW(1) YES YES Keep Replace a.0.45 to 22.3 Only one Wet
Option 3 (1 pump= Caterpillar Waukesha b.0.71 to 14.4 Weather Pump
($8.66 M(5)) ($9.75 M(5)) PDWF)but no0 with electric (1 pump at each
backup motor and PS)
VFD
Notes:
(1)Reuse existing 75 KW generators.This option will require the replacement of the new generator installed under this Phase 1 project in the future when the Caterpillar engine is eventually replaced.Total project cost is same as Option 3 but increased due to inflation.
(2)Limited to no space on site for installation of large generator with Caterpillar radiator to remain.Smaller generator(300 KW at Moraga and 250 KW at OC for PDWF=1 dry weather pump)can be installed under Phase 1 project but this option will require the replacement of
the smaller generator installed in the future when the Caterpillar engine is eventually replaced,increasing total overall cost. Under this option(750 KW at Moraga and 650 KW at OC)one dry weather on standby generator and one wet weather pump on engine.
(3)Limited to no space on site for installation of 250 KW generator to operate one dry weather pump(PDWFs)with radiators to remain.
(4)Total project cost in current 1st Quarter 2018$s.Includes Phase 1 project and deferred future costs($1.11VI/station).
(5)Total project cost in current 1st Quarter 2018$s.Includes Phase 1 project and deferred future costs($1.7M/station).Same overall total project cost as Option 3,but more$s are deferred. F'
(6)Range of flow=Dry weather flow to Peak wet Weather flow(PDWF) 20