salinas valley water project - monterey countycemonterey.ucanr.edu/files/85588.pdf · 2010-01-08...
TRANSCRIPT
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Salinas Valley Water ProjectSalinas Valley Water Project
2010 Irrigation and Nutrient Management Field Day2010 Irrigation and Nutrient Management Field Day February 23 2010February 23 20102010 Irrigation and Nutrient Management Field Day 2010 Irrigation and Nutrient Management Field Day -- February 23, 2010February 23, 2010
Manuel Quezada / Chris Moss Manuel Quezada / Chris Moss
Monterey County Water Resources AgencyMonterey County Water Resources Agency
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PresentationPresentationPresentationPresentation
Salinas Valley Water ProjectSalinas Valley Water ProjectSalinas Valley Water ProjectSalinas Valley Water ProjectNacimiento Dam Spillway ModificationNacimiento Dam Spillway Modification
ReoperationReoperationReoperationReoperationObermeyer GateObermeyer Gate
Salinas River Diversion FacilitySalinas River Diversion FacilitySalinas River Diversion FacilitySalinas River Diversion FacilityObermeyer Gate (Inflatable Dam)Obermeyer Gate (Inflatable Dam)Pump Station & PipelinePump Station & PipelinePump Station & PipelinePump Station & PipelineFilter Screen StationFilter Screen StationChlorination FacilitiesChlorination FacilitiesChlorination FacilitiesChlorination FacilitiesFish LadderFish Ladder
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NACIMIENTO DAM NACIMIENTO DAM SPILLWAY MODIFICATION SPILLWAY MODIFICATION
PROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARY
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NacimientoNacimiento Dam and ReservoirDam and Reservoir
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IntroductionIntroductionIntroductionIntroduction
TheThe AgencyAgency developeddeveloped thethe SalinasSalinas ValleyValley WaterWaterProjectProject (SVWP)(SVWP) toto addressaddress thethe waterwater resourcesresourcesmanagementmanagement issuesissues withinwithin thethe SalinasSalinas ValleyValley..gg yy
TwoTwo ObjectivesObjectives::
StopStop seawaterseawater intrusionintrusion resultingresulting fromfrom basinbasinoverdraft,overdraft, andand;;Pro idePro ide anan adeq ateadeq ate aterater s ppls ppl forfor c rrentc rrentProvideProvide anan adequateadequate waterwater supplysupply forfor currentcurrentandand futurefuture needsneeds..
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BackgroundBackgroundBackgroundBackground
SVWP contains three major components:SVWP contains three major components:SVWP contains three major components: SVWP contains three major components:
Modifications to the Nacimiento DamModifications to the Nacimiento DamModifications to the Nacimiento Dam Modifications to the Nacimiento Dam Spillway to safely convey PMF Spillway to safely convey PMF (~99,000 cfs) w/out overtopping or (~99,000 cfs) w/out overtopping or requiring Flood Pool; requiring Flood Pool;
Construction of the Salinas RiverConstruction of the Salinas RiverConstruction of the Salinas River Construction of the Salinas River Diversion Facility, and; Diversion Facility, and;
ReRe--operation of San Antonio andoperation of San Antonio andReRe operation of San Antonio and operation of San Antonio and Nacimiento Dams. Nacimiento Dams.
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Project Design SummaryProject Design SummaryProject Design SummaryProject Design Summary
O i i l S ill h i ht i El 800 f t NGVD 29O i i l S ill h i ht i El 800 f t NGVD 29Original Spillway height is El 800 feet, NGVD 29Original Spillway height is El 800 feet, NGVD 29
Demolished existing Spillway 15 feet to El 785 feetDemolished existing Spillway 15 feet to El 785 feet
Installed Obermeyer Gate Installed Obermeyer Gate -- Gate height of 12.25 feetGate height of 12.25 feet
Existing Chute & Approach channel walls wereExisting Chute & Approach channel walls wereExisting Chute & Approach channel walls were Existing Chute & Approach channel walls were raised, strengthened and anchoredraised, strengthened and anchored
Bridge pier required strengtheningBridge pier required strengtheningg p q g gg p q g g
HighHigh--Level Gate Operators modifiedLevel Gate Operators modified
C t l h t t dC t l h t t dControl house constructedControl house constructed
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Spillway ChuteSpillway ChuteSpillway ChuteSpillway Chute
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SpillwaySpillwaySpillwaySpillway
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“Obermeyer” Inflatable Gate“Obermeyer” Inflatable GateObermeyer Inflatable GateObermeyer Inflatable Gate
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Contract UpdateContract Update
All j t ti ti iti l t d M h 1All j t ti ti iti l t d M h 1All major construction activities were completed March 1, All major construction activities were completed March 1, 2009, ahead of schedule and under budget. Currently, 2009, ahead of schedule and under budget. Currently, closing out contract, will seek project approval from BOD.closing out contract, will seek project approval from BOD.g jg j
Granite ConstructionGranite ConstructionContract AmountContract Amount $9 998 998$9 998 998Contract Amount . . . . . . . . . . . . . . . .Contract Amount . . . . . . . . . . . . . . . . $9,998,998$9,998,998Final Construction Cost . . . . . . . . . Final Construction Cost . . . . . . . . . . . . . $10,040,287. . . . $10,040,287
C t S iC t S iCost SavingsCost SavingsAgency receive credits from unused construction Agency receive credits from unused construction contingency, and from Obermeyer and Engineering contingency, and from Obermeyer and Engineering contracts. Totals approximately $1Mcontracts. Totals approximately $1M
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NACIMIENTO DAM NACIMIENTO DAM SPILLWAY MODIFICATION SPILLWAY MODIFICATION
PROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARY
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SALINAS RIVER SALINAS RIVER DIVERSION FACILITY DIVERSION FACILITY PROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARYPROJECT SUMMARY
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Salinas RiverDiversion FacilityDiversion Facility
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General Project TimelineGeneral Project TimelineGeneral Project TimelineGeneral Project Timeline
• Environmental Approvals 2001 – 2007 • EIR/EIS State Fed Local Permits• EIR/EIS, State, Fed, Local Permits
• SVWP Ballot Approval 2003 • SRDF Design 2004 – 2008• SRDF Design 2004 – 2008• Construction 2008 – 2009• Operation 2010• Operation 2010
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DiscussionDiscussion Blended Recycled Water DiscussionDiscussion y& Chlorinated River Water
to Service Area
Recycled Water Plant
River Water Screen StationRiver Water Chlorination S t
General layout of Salinas River Diversion FacilityGeneral layout of Salinas River Diversion Facility
System
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March 2008
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River Water Filter Screen StationRiver Water Filter Screen StationPrior to Chlorination
1/8/10
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River Water Chlorination System1/8/10
River WaterWater
ChlorineInjectionBuilding
Recycled Water Pond
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Contract UpdateContract Update
All j t ti ti iti l t d J 15All j t ti ti iti l t d J 15All major construction activities were completed January 15, All major construction activities were completed January 15, 2010. Operation to begin April 2010.2010. Operation to begin April 2010.
Anderson Pacific Engineering Construction, Inc.Anderson Pacific Engineering Construction, Inc.Contract Amount . . . . . . . . . . . . . . . $11,036,100Contract Amount . . . . . . . . . . . . . . . $11,036,100Final Construction Cost (Estimated)Final Construction Cost (Estimated) $13 900 000$13 900 000Final Construction Cost (Estimated) . . Final Construction Cost (Estimated) . . . . . . $13,900,000. . . . $13,900,000
Cost IssuesCost IssuesD il f d tiD il f d tiDam soil foundationDam soil foundation
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Salinas Valley Water ProjectSalinas Valley Water Project
M l Q d S i W t R E iManuel Quezada, Senior Water Resources Engineer Chris Moss, Senior Water Resources Engineer
Monterey County Water Resources Agency893 Blanco Circle, Salinas, CA 93901
831.755.4860831.755.4860
www.mcwra.co.monterey.ca.us