Westside Water Quality Treatment Project Proposition 13 Photo Diary Final Report March 2008
Southern California Region
Westside Water Quality Treatment Project Project Objective: Design and construct a large state of the art stormwater quality treatment system capable of treating all dry weather flow (2 cfs) and wet weather stormwater runoff for the design storm event (0.75 inches in 24 hours) = 33 cfs from the Pearl and Pico/Centinela sub basins in the City of Santa Monica.
Design Objectives Treatment systems shall be commercially available with a proven track record no prototypes or unproven designs No moving parts or chemical additives No electrical power for treatment system Select treatment systems on basis of best fit for site hydraulic conditions and lowest life cycle (purchase and installation and annual O&M) cost
Project Urban Runoff Treatment Objectives Screening / Sedimentation to remove suspended sediment and all floatable trash larger than 1/8-inch in diameter from wet weather flows up to 33 cfs Filtration to remove oil and grease, heavy metals, pesticides, and herbicides from up to 2 cfs of dry weather flow
Project Funding $1.8 million for design, permitting and construction Sources: California State Propositions 12 and 13 State Integrated Waste Management Board Grant City of Santa Monica matching funds
Project Schedule B&V Selected by City of Santa Monica Feasibility Study Phase Design Phase Permitting Phase Advertise for Bids Construction Phase Project Closeout / In Service Oct. 12, 2003 Nov. 10, 2003 Feb. 6, 2004 July 19, 2004 Feb. 28, 2005 March 1, 2005 June 30, 2005 July 21, 2005 August 18, 2005 April - August 2006 Sept. 1, 2006
Feasibility Study Phase Objectives: Find an acceptable site for urban runoff treatment facility Select appropriate treatment systems for the facility
Site Selection Criteria Site must have available freeboard in conveyance system so that treatment systems won t cause surcharging from 10-year event Site should have minimum number of expensive utility relocations Traffic impacts during construction must be minimal Sufficient hydraulic drop ( H) to allow gravity system to operate
XP-SWMM Modeling Results PICO PICO PICO PICO PICO PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD OLYMP OLYMP OLYMP OLYMP OLYMP SANTA SANTA SANTA SANTA SANTA MO MO MO MO MO PULVEDA BLVD WILSHIRE WILSHIRE WILSHIRE WILSHIRE WILSHIRE BLV BLV BLV BLV SAN SAN SAN SAN SAN VICENTE VICENTE VICENTE VICENTE VICENTE BLVD BLVD BLVD BLVD BLVD SUNSE PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD OLYMPIC OLYMPIC OLYMPIC OLYMPIC OLYMPIC BLVD BLVD BLVD BLVD BLVD SANTA SANTA SANTA SANTA SANTA MONICA MONICA MONICA MONICA MONICA BLVD BLVD BLVD BLVD BLVD PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD OLYMPIC OLYMPIC OLYMPIC OLYMPIC OLYMPIC BLVD BLVD BLVD BLVD BLVD WILSHIRE WILSHIRE WILSHIRE WILSHIRE WILSHIRE BLVD BLVD BLVD BLVD BLVD OVERLAND AVE OVERLAND AVE PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD SEPULVEDA BLVD OLYMPIC OLYMPIC OLYMPIC OLYMPIC OLYMPIC BLVD BLVD BLVD BLVD BLVD NATIONAL PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD OCEAN OCEAN OCEAN OCEAN OCEAN PARK PARK PARK PARK PARK BLVD BLVD BLVD BLVD BLVD OLYMPIC OLYMPIC OLYMPIC OLYMPIC OLYMPIC BLVD BLVD BLVD BLVD BLVD SANTA SANTA SANTA SANTA SANTA MONICA MONICA MONICA MONICA MONICA BLVD BLVD BLVD BLVD BLVD 7TH 7TH 7TH 7TH 7TH ST ST ST ST ST PICO PICO PICO PICO PICO BLVD BLVD BLVD BLVD BLVD WILSHIRE WILSHIRE WILSHIRE WILSHIRE WILSHIRE BLVD BLVD BLVD BLVD BLVD Virginia Avenue Site (City of Santa Monica) Virginia Ave Site CULVER CULVER CULVER CULVER CULVER BLVD BLVD BLVD BLVD BLVD SEPULVEDA BLVD BUNDY DR OCEAN OCEAN OCEAN OCEAN OCEAN PARK PARK PARK PARK PARK BLVD BLVD BLVD BLVD BLVD LINCOLN LINCOLN LINCOLN LINCOLN LINCOLN BLVD BLVD BLVD BLVD BLVD WASHINGTON WASHINGTON WASHINGTON WASHINGTON WASHINGTON PL PL PL PL PL NORTH NORTH NORTH NORTH NORTH VENICE VENICE VENICE VENICE VENICE BLVD BLVD BLVD BLVD BLVD OCEAN OCEAN OCEAN OCEAN OCEAN AV AV AV AV AV SEPULVEDA SEPULVEDA SEPULVEDA SEPULVEDA SEPULVEDA BLV BLV BLV BLV BLV CULVER BLVD NORTH NORTH NORTH NORTH NORTH VENICE VENICE VENICE VENICE VENICE BLVD BLVD BLVD BLVD BLVD LINCOLN LINCOLN LINCOLN LINCOLN LINCOLN BLVD BLVD BLVD BLVD BLVD NEILSON NEILSON NEILSON NEILSON NEILSON WY WY WY WY WY MARINA DEL REY BALLONA CREEK CENTINELA CENTINELA CENTINELA CENTINELA CENTINELA AVE AVE AVE AVE AVE Mar Vista Park Site MARINE ST JEFFERSON JEFFERSON JEFFERSON JEFFERSON JEFFERSON BL B WASHINGTON WASHINGTON WASHINGTON WASHINGTON WASHINGTON BLVD BLVD BLVD BLVD BLVD CENTINELA CENTINELA CENTINELA CENTINELA CENTINELA AVE AVE AVE AVE AVE NORTH NORTH NORTH NORTH NORTH VENICE VENICE VENICE VENICE VENICE BLVD BLVD BLVD BLVD BLVD CULVER BLVD MARINA EXWY Mar Vista Park Site (City of Los Angeles)
Alternative 1 Virginia Ave. Profiles 10 year Event Surface Elevation Maximum HGL Soffit Elevation Invert Elevation
Alternative 2 Mar Vista Park 10-Year Event Site Location Mar Vista Park Barrington Ave. and National Blvd.
Project Site Overview
Dry Weather Flow Verification
Mar Vista Park Site NoUtility Conflicts NoTraffic Construction Impacts Acceptable Hydraulic Head Available Flow to be Diverted from Sawtelle Channel Box Culvert Under Park Site not in City of Santa Monica
Site Design - Aerial
Mar Vista Park Site Challenges Obtain Approval of L.A. Dept. of Recreation and Parks Board for Use of the Site Formal Agreement Executed Between City of Santa Monica and City of Los Angeles Potential Conflict with Ongoing Park Renovation Project
Mar Vista Park Site Challenges Old soccer field below; replaced with new soccer field, left.
Major Project Challenges Site Within City of Santa Monica Permitting City of Santa Monica Plan Review / Approval City of Santa Monica Building Permit
Major Project Challenges Greatly Increased Regulatory Complexity Associated with Mar Vista Park Site Mar Vista Park Site City of Santa Monica Plan Review / Approval Site Access per Formal Agreement Between City of Santa Monica and City of Los Angeles LADRP Review and Approval of Diversion Pipeline Plans LA County Flood Control Permit for Diversion Pipeline Separate LA County Flood Control Permit for Connections to Sawtelle Channel Box Culvert
Major Project Challenges Greatly Increased Regulatory Complexity Associated with Mar Vista Park Site Corps of Engineers Design Approval for Connections to Existing Sawtelle Channel Box Culvert Multiple Meetings with LADRP Engineer for Park Renovation Project to Coordinate Both Projects LADRP Plan Approval for Parking Lot Improvements City of L.A. Department of Building Safety Approval Required for Parking Lot Striping Plan LA County DPW approval of diversion weir design
Treatment System Selection Criteria Off the Shelf System Verifiable Treatment Claims Must be Able to Function Under Available Limited Hydraulic Head Lowest Life Cycle Cost
Evaluation Process Evaluated 7 Devices for High Flow Treatment Evaluated 5 devices for Dry Weather Flow Treatment
Off-the-shelf Units Considered CDS Technologies
Off-the-shelf Units Considered Contech
Off-the-shelf Units Considered AquaShield
Off-the-shelf Units Considered Bio Clean Baffle Box
Off-the-shelf Units Considered Vortechnics
Off-the-shelf Units Considered Hydro International
Life Cycle Costs Table 3 Comparison of Life Cycle Costs Product Installed Cost Maintenance Cost over 20 Year Life Life Cycle Cost Primary Treatment AquaSwirl $ 222,000 $ 111,000 $ 333,000 BaySaver NA NA NA CDS Separator $ 289,000 $ 83,000 $ 372,000 Downstream $ 163,000 $ 111,000 $ 273,000 Defender Bio Clean Environ. Svcs. Baffle Box $ 73,000 $ 83,000 $ 156,000 StormScreen $ 260,000 $ 83,000 $ 343,000 Vortechs $ 142,000 $ 83,000 $ 265,000 Secondary Treatment Aqua Filter $110, 000 $ 122,000 $ 199,000 CDS Filtration $ 316,000 $ 415,000 $ 524,000 System Environ. Svcs. NA NA NA Polisher Stormwater Mgmt. $269,000 $ 415,000 $ 477,000 StormFilter Vortechnics Filtration $ 244,000 $ 415,000 $ 452,000
Results Wet Weather Treatment System - Bio Clean Environmental Services Nutrient Separating Baffle Box, or approved equal Dry Weather Treatment System Stormwater Management, Inc. Stormfilter (Now Contech Stormwater Solutions), or approved equal
Design of the Westside Water Quality Treatment Facility
Design of the Westside Water Quality Treatment Facility
Project Pre-Construction Photos Parking Lot Site of treatment system under lot
Project Pre-Construction Photo Soccer Field Parking lot for treatment system in background
Project Pre-Construction Photo
Diversion Pipeline Installation Background, excavation for upstream diversion. Pipeline goes under the new synthetic soccer field, which was installed after diversion pipeline.
Diversion Pipeline Installation Pipeline from Sawtelle Channel to the treatment system, placed under the new soccer field (to come)
Diversion Pipeline Installation
Diversion Pipeline Installation
Diversion Pipeline Installation
Diversion Pipeline Installation Backfilling
StormFilter Excavation
StormFilter Installation
StormFilter Installation
StormFilter Installation Filtering Cartridges Backfilling
Upstream Diversion Installation
Upstream Diversion Installation Left, opening into Sawtelle Channel
Upstream Diversion Speed Bump
Upstream Diversion Vault
Downstream Diversion Vault
Downstream Diversion Vault Diversion weir to divert low-flow into the StormFilter, to the left. Wet weather flow goes over the weir straight into Baffle Box
Baffle Box Installation
Baffle Box Installation Screen Installation
Baffle Box Installation Right, looking upstream to Diversion Vault Left, Baffle Box covers
Isolation Vault Installation
Isolation Vault Installation
Isolation Vault Installation
Parking Lot Installation
Parking Lot Installation
Training
Training
Opening Ceremony
Opening Ceremony
Opening Ceremony
System Operating Speed bump in Channel, flows entering pipe to upstream diversion vault
System Operating Dry Channel floor just downstream of speed bump. Runoff flows left to right in photo, on other side of bump.
System Operating Upstream Diversion Vault, flow meter bottom left Left, water from Channel to upstream diversion vault, above
System Operating Downstream Diversion Box, right to StormFilter (dry weather flow), over weir to Baffle Box (rain event).
System Operating StormFilter operating.
Baffle Box at start up, right, and a month after test operation. System Operating
Flow meter reads dry weather flow post-stormfilter treatment System Operating
System Operating Isolation Vault dry weather flow from top pipe (StormFilter); wet weather flow from left pipe (Baffle Box).
Treated water exiting Isolation Vault back into Sawtelle Channel System Operating
Cleaning System Initial Stormfilter cartridge change-out: August 1 3, 2007
Cleaning System
Cleaning System One-year old cartridge
Baffle Box to come in final report Cleaning System
Upstream Sampling Water Quality Sampling
Water Quality Sampling Downstream Sampling
Water Flow Sampling
Westside Project Water Quality Data Parameter Inflow Outflow % Reduction Aluminum 1.33 mg/l 0.734 mg/l 44% Arsenic 2.35 ug/l 1.71 ug/l 27% Color 18.0 Color Units 13.0 Color Units 27% Iron 1.98 mg/l 0.040 mg/l 98% Mercury ND<1.0 ug/l ND<1.0 ug/l
Westside Project Water Quality Data Parameter Inflow Outflow % Reduction Selenium 7.95 ug/l 4.48 ug/l 43% Total Suspended Solids 9.00* mg/l 7.00* mg/l 22% Turbidity 2.01 NTU 1.27 NTU 64% Zinc 118 ug/l 34.0 ug/l 71% * Estimate
Final Signage
Thank You 310.458.8223 neal.shapiro@smgov.net www.smepd.org/runoff