final design of cathodic protection system for the west
TRANSCRIPT
Authorize final design of CathodicAuthorize final design of CathodicAuthorize final design of Cathodic Authorize final design of Cathodic Protection System for the West Valley Protection System for the West Valley Feeder No 2Feeder No 2Feeder No. 2Feeder No. 2
Corporate Resources Group December 2009
Appropriate Appropriate $240,000 in $240,000 in budgeted fundsbudgeted funds
Authorize final design of a Cathodic Protection SystemAuthorize final design of a Cathodic Protection SystemAuthorize final design of a Cathodic Protection System Authorize final design of a Cathodic Protection System for the West Valley Feeder No. 2 Pipelinefor the West Valley Feeder No. 2 Pipeline
Corporate Resources Group December 2009
CASTAIC DAM& LAKE
West Valley Feeder No. 2
MORRIS RESERVOIR
LIVE OAK RESERVOIR
SILVERWOODLAKE
Upper FeederRialto
Santa A
na
* Jensen Plant
LAKEPERRIS
GARVEY RESERVOIR
Middle
Feeder
Lower
Upper
Valley
Calabasas Feeder
LAKEMATHEWS
DIAMOND VALLEY LAKE
EL TORO
SANTIAGO RESERVOIR
PERRIS
Colorado River
EL TORO RESERVOIR
LAKE SKINNERSAN JOAQUIN RESERVOIR
Corporate Resources Group December 2009
CASTAIC DAM& LAKE
West Valley Feeder No. 2
MORRIS RESERVOIR
LIVE OAK RESERVOIR
SILVERWOODLAKE
Upper FeederRialto
Santa A
na
*
LAKEPERRIS
GARVEY RESERVOIR
Middle
Feeder
Lower
Upper
Valley
Calabasas Feeder
•• 8.78.7--mile longmile long•• 103103--inch diam. welded steel pipeinch diam. welded steel pipe
LAKEMATHEWS
DIAMOND VALLEY LAKE
EL TORO
SANTIAGO RESERVOIR
PERRIS
Colorado River•• 9696--inch diam. prestressed concrete cylinder pipe (PCCP)inch diam. prestressed concrete cylinder pipe (PCCP)•• Constructed in 1973Constructed in 1973•• Serves San Fernando Valley, western LA County, and Serves San Fernando Valley, western LA County, and southern Ventura Countysouthern Ventura County EL TORO
RESERVOIRLAKE SKINNERSAN JOAQUIN
RESERVOIR
southern Ventura Countysouthern Ventura County
Corporate Resources Group December 2009
Induced stray currents cause corrosion & loss of metal in pipelinep pe e
High voltage power line parallels West Valley Feeder No. 2
Impressed Current Cathodic Protection System installed toImpressed Current Cathodic Protection System installed to protect pipe
Recent developments show Impressed Current CathodicProtection Systems protect steel pipe but cause wires in PCCP to become more brittle
Galvanic Cathodic Protection System does not cause wires to become brittle
Corporate Resources Group December 2009
Replace impressed current cathodic protection Replace impressed current cathodic protection p p pp p psystem with galvanic cathodic protection system system with galvanic cathodic protection system for both welded steel and PCCP sectionsfor both welded steel and PCCP sections•• Install test installation at 1 locationInstall test installation at 1 location•• Perform final design for 26 locationsPerform final design for 26 locations
Corporate Resources Group December 2009
Labor
Owner Costs (Permitting, R‐O‐W, PM) $ 79,500
Final Design $112,500
Metropolitan Force Installation (test install) $ 12,000
Materials, Supplies & Incidentals $ 5,400, pp $ ,
Equipment use $ 1,200
Remaining Budget $ 29 400Remaining Budget $ 29,400
TotalTotal $240,000$240,000
Corporate Resources Group December 2009
Estimated Construction Cost Range is $850,00 - $1,000,000
PhasePhase 20102010 2011201120092009
Final Design
Construction
Construction CompletionCompletionBoard Action Final Design
Corporate Resources Group December 2009
Construction CompletionCompletionBoard Action Final Design
Option # 1Option # 1
Adopt CEQA determination
Appropriate $ 240 000 in budgeted fundsAppropriate $ 240,000 in budgeted funds
Authorize final design of a galvanic cathodic protection system for West Valley Feeder No 2system for West Valley Feeder No. 2
Option # 2
Do not authorize final design phase activitiesDo not authorize final design phase activities
Corporate Resources Group December 2009
Option #1
Corporate Resources Group December 2009
Corporate Resources Group December 2009
AC Power Source
Impressed Currents Galvanic Anodes
Rectifier
DC
_
Anode Well+ _
_Pipeline Pipeline
+
Sacrificial Anodes
AnodeGroundbed+
Corporate Resources Group December 2009
Groundbed
GPS antennaGPS antenna
Recording meterRecording meter
ff
Corporate Resources Group December 2009
Reference Reference electrodeelectrode