lower los angeles river watershed · • phase 2: final bioswale, shoreline re-grading, planting of...
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Nearshore WatershedJuly 12, 2018
Presented by:Melissa You and James Vernon
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Port of Long Beach
City of Long Beach
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• The City of Long Beach is a member of three Watershed Management Groups (WMGs) in addition to the Nearshore WMG:
• Lower Los Angeles River• Lower San Gabriel River• Los Cerritos Channel
• The Nearshore WMG is comprised of the City of Long Beach (the portion not in the above WMGs) and the Port of Long Beach
• The City of Long Beach is subject to its own MS4 Permit
• The Nearshore WMP was approved in January 2016
Background
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Public Retrofit Projects
PE R.O.W.
Granada Parking Lot Improvements
Junipero Parking Lot Improvements
Alamitos Parking Lot Improvements
Marine Park Parking Lot Improvements
Colorado Lagoon Restoration
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• BMP Type: Infiltration Basin• BMP Quantity: 10• BMP Capacity: 0.07 acre-feet
Alamitos Parking Lot Improvements
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Granada Parking Lot Improvements • BMP Type: Infiltration Basin
• BMP Quantity: 11• BMP Capacity: 0.6 acre-feet
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Junipero Parking Lot Improvements
• BMP Type: Infiltration Basin• BMP Quantity: 3• BMP Capacity: 0.19 acre-feet
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Marine Park Parking Lot Improvements• BMP Type: Infiltration Systems• BMP Quantity: 10• BMP Capacity: 0.07 acre-feet
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• Conversion of PE R.O.W. property (~1 mile) to public greenbelt with bicycle and pedestrian trails and access to Colorado Lagoon
• Stormwater capture
• Water-efficient irrigation, energy-efficient lighting, carbon-sequestering vegetation
Pacific Electric Right-of-Way (PE R.O.W.)
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• Stormwater and urban runoff treatment facility
• Drainage area of 12,000 acres serving disadvantaged communities
• Potential treatment capacity of ~436,000 gallons/day
• Already awarded $28 million in Caltrans funding and over $2 million from additional sources
• Later phase to intercept drainage from Port of Long Beach for treatment
Long Beach MUST
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• Potentially intercept stormwater from Port areas in the vicinity of the MUST
• Divert the 85th percentile, 24-hour rainfall event• Pier B – 160 acres • Pier C – 75 acres• Pier D – 5 acres
Port Integration with the MUST
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• Implemented to comply with the Colorado Lagoon Toxics TMDL
• Phase 1: low-flow diversion, dredging, temporary bioswale, trash separation devices
• Phase 2: final bioswale, shoreline re-grading, planting of native vegetation, construction of open channel connection to Alamitos Bay
• City and Port of Long Beach worked closely on this project as well as state/federal agency partners
Colorado Lagoon Restoration
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Annual detail cleaning of vaults
Colorado Lagoon Trash Traps
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Monitoring• Integrated Monitoring Programs (IMPs):• Port Area• Non-Port Area
• Nearshore:• LB City Beaches and LARE Bacteria
• (AB 411 Beaches)• Colorado Lagoon OC Pesticides, PAHs, PCBs,
Metals and Sediment Toxicity• Sediment Quality Objectives
• Additionally:• Dominguez Channel and Greater Los Angeles
and Long Beach Harbor Waters Toxic Pollutants
• Multiple other TMDLs are monitored through participation in other watersheds
• Non-stormwater outfall screenings conducted
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• Extensive mapping effort completed
• Installation of full capture systems are underway
• Additionally:• Port of Long Beach installed:
o 35 vortex separatorso 101 catch basin insertso 45 CPSo 236 ARS
• City of Long Beach completed 2 LFD/vortex systems that provide dry-weather trash and sediment treatment and screening
Statewide Trash Amendment
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Questions?Thank You