Project Logistics
Who are the PEs for this project?
Erl and Sarah
Which distribution pump are we demoing?
Leland No. 1
Who is the Treatment Plant Supervisor?
Where does the filter backwash supernatant go after the gravity thickener?
LAF AQ 1 & 2 (after weir)
What is the voltage of the PG&E service?
21kV
What is the design budget?
4.1M
Why are we adding a CCB (3 reasons)?
Increase plant capacity
Reduce DBPs
Operational flexibility/reliability
Eliminate need for Briones Disinfection Facility Improvements
Which AQ runs right next to the proposed power building location? Which runs next to the proposed CCB location?
Power building: LAF2
CCB: LAF1
What is the difference between an inline treatment plant and a conventional treatment plant?
Inline plant does not have flocculation and sedimentation.
What voltage feeds the pumping plants? WTP?
Pumping plants: 2.4 kV
WTP: 480 V
What is the board award date?
April 2026
Why are we replacing the washwater control valve?
Existing washwater tank may fail in earthquake. Existing valve cannot handle the increased pressure from Highland reservoir (new washwater tank).
What is the current sustainable plant capacity with in-plant disinfection only?
14 MGD
What is the purpose of the EQ basin?
Hold filter backwash water as it is metered out to the gravity thickener
What is the kW of the current generator?
1500 kW
When is the 10% design date?
July 2024
Which MCC are we replacing?
Filter gallery MCC
What is the current sustainable plant capacity with in-plant disinfection and aqueduct chlorination?
18 MGD
Which chemicals are dosed at the filter effluent?
Sodium hypochlorite, caustic, fluoride
What important piece of equipment is the current generator missing?
Load bank
Which projects will be in construction at the Lafayette Center at the same time as this project is in construction?
CSSIP
LAF1 AQ relining
LAF1 AQ weir
Safety and reliability concerns due to aging electrical equipment
When was the LAFWTP built?
1953
List the main treatment processes at LAFWTP in order
Coagulation and chlorination, Filtration, chlorination and post-treatment (caustic and fluoride)
What is CSSIP adding to the electrical distribution system?
Emergency generator for plant loads
Unit substation (2.4 kV - 480 V transformer and switchboard)