Construction Costs For Stormwater Capture Projects
Construction Costs for StormwaterCapture ProjectsApril 11, 2019
Los Angeles CountyStormwater Capture ProjectsLEGENDCounty ProjectCity Project
Los Angeles CountyStormwater Capture ProjectsProject NameCategoryConstructionCostsCapacity perStorm EventFranklin D. Roosevelt Park Regional Stormwater Capture ProjectInfiltration Wells &Gallery 10.3M8 acre-feetReuse 28.8M7 acre-feetCarriage Crest Park Stormwater and Runoff Capture ProjectDiversion toWWTF 16.3M27 acre-feetLadera Park Stormwater Improvements ProjectInfiltrationWells/Reuse 7.9M5.1 acre-feetGates Canyon Stormwater Improvements ProjectInfiltrationWells/Reuse 8.5M3.5 acre-feetEarvin “Magic” Johnson Park: Compton Creek StormwaterCapture and Reuse Project
Franklin D. Roosevelt Park ProjectConstruction Cost 10.3M
Franklin D. Roosevelt Park Project
Earvin “Magic” Johnson ParkConstruction Cost 28.8M
Carriage Crest Park ProjectConstruction Cost 16.3M
Ladera Park ProjectConstruction Cost 7.9M
Gates Canyon Park ProjectTreatmentUnit3.5 Ac-Ft Cistern(Underground)Pre-treatmentDiversionPump Well5 Infiltration Wells(Underground)Existing StormDrainConstruction Cost 8.5M
Lessons Learned (so far) Regarding Costs Innovation Each project is unique (geologic condition, type of communityenhancements, etc.) Developing new standards and processes Land Availability Park space Partnerships with cities Need to begin partnering with private sector
Lessons Learned (so far) Regarding Costs Thriving Economy Affects number of competitive bids Tariffs Life Cycle Costs High upfront costs but need to develop true life cycle costs As we learn more about the performance of these projects,soft costs/construction costs/maintenance costs are expectedto be reduced
Los Angeles CountyFunding SourcesConstructionCostsGrantFundingGrant SourceFranklin D. Roosevelt Park Regional StormwaterCapture Project 10.3M 2.05MProposition 84Earvin “Magic” Johnson Park: Compton CreekStormwater Capture and Reuse Project 28.8MN/AN/A 16.3M( 5.7M fromCounty) 13.0MCaltransLadera Park Stormwater Improvements Project 7.9M 4.835MProposition 84Gates Canyon Stormwater Improvements Project 8.5M 3.3MProposition 1Project NameCarriage Crest Park Stormwater and RunoffCapture Project (Led by Carson)
Los Angeles CountyUpcoming ProjectsBassett High SchoolAllen J Martin ParkEast LA Sustainable MedianHasley Canyon ParkAdventure Park
Los Angeles CountyUpcoming ProjectsProject NameProject PhaseProject NameProject PhaseEast LA MedianSustainable Median ( 30M)DESIGNJake Kuredjian Park Multi-benefitStormwater Capture ProjectCONCEPTViewridge Rd RegionalSuper Green Streets Project ( 5.8M)DESIGNObregon Park Multi-benefitStormwater Capture ProjectCONCEPTAlondra Park Multi-benefitStormwater Capture Project ( 36M)DESIGNSlauson Ave & Shenandoa AveRegional Super Green Streets ProjectCONCEPTAdventure Park Multi-BenefitStormwater Capture Project ( 31M)DESIGNWest Centinela AveRegional Green Street ProjectCONCEPTBassett High School StormwaterCapture Project ( 45M)CONCEPTBallona Creek UA IslandsRegional Green Street ProjectCONCEPTMonteith Park StormwaterCapture Project ( 5M)CONCEPTAllen J Martin Park Multi-benefitStormwater Capture ProjectCONCEPTHasley Canyon Park StormwaterCapture Project ( 10.7M)CONCEPTMulholland Hwy et al RegionalSuper Green Streets ProjectCONCEPTWagon Road Low FlowDiversion ( 1.3M)CONCEPTChester Washington Park Multi-benefitStormwater Capture ProjectCONCEPTPico Canyon Park Multi-benefitStormwater Capture ProjectCONCEPTCastaic Sports Complex Multi-benefitStormwater Capture ProjectCONCEPT
Green Streets New Green Street Master Plan by early 2020 Robust cost data expected in late 2020
THANK YOUContact Information:Paul Alva, P.E.Assistant Deputy DirectorLos Angeles County Public Workspalva@dpw.lacounty.gov(626) 458-4325
Capture Project. 10.3M : 2.05M. Proposition 84: Earvin “Magic” Johnson Park: Compton Creek Stormwater Capture and Reuse Project. 28.8M : N/A. N/A: Carriage Crest Park Stormwater and Runoff Capture Project (Led by Carson) 16.3M ( 5.7M from County) 13.0M: Caltrans. Ladera Park Stormwat
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NPDES: Stormwater Best Management Practice— — Stormwater Wetland Stormwater Retrofit A stormwater retrofit is a stormwater control (usually structural) that a community puts into place after development to improve water quality, protect downstream channels, reduce flooding or meet other specific objectives.
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Green Stormwater Infrastructure Maintenance Manual 7 1.1 Introduc on The City of Philadelphia relies in part on Green Stormwater Infrastructure (GSI) systems—comprised of one or more decentralized stormwater management prac ces (SMPs) such as rain gardens, stormwater tree trenches, and green roofs—to reduce stormwater volume and pollutants
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