Project Title: South Los Angeles Wetland Park Project

Applicant Name: City of Los Angeles

Project Summary:

The Wetland Park is proposed to include stormwater pre-treatment best management practices (BMP) measures, a stormwater treatment wetland of approximately 4.0 to 4.5 acres, renovation of an 81,760 square foot on-site structure, open park space, and a parking lot with a vegetated swale to direct runoff into the wetland. The Wetland Park will provide educational opportunities and wildlife viewing, historical railway elements, a community multi-use center, and historical building reutilization.

The purpose of the Wetland Park is to assist the City in meeting TMDL requirements set by the Los Angeles Regional Water Quality Control Board (RWQCB) thereby increasing beneficial and recreational uses of receiving water bodies such as the Los Angeles River and coastal areas. The Wetland Park will assist in minimizing the introduction of pollutants including; bacteria, oil & grease and gasoline, suspended sediments, and heavy metals, all of which are components of urban runoff that ultimately are washed into receiving waters.

The Wetland Park will assist in reducing bacteria levels in the surf zone to meet the new requirements of the stormwater NPDES permit. Park amenities include; trails, boardwalks, observation decks, picnic areas, a natural rock-garden seating area, educational signage, and renovation of an 81,760 square-foot on-site building for mixed public use.

Watershed: Los Angeles River

Council District(s): 9

Project Total Cost: $24,508,783 Prop O Funds Request: $8,100,000

Date of Project Approval:

Download Preliminary Design Report [4.4 MB pdf]


Project Title: Cesar Chavez Recreational Complex

Applicant Name: City of Los Angeles

Project Summary:

The City proposes to develop recreational facilities on a city-owned 41-acre site formerly used as a municipal landfill known as Sheldon-Arleta Landfill (SAL). There are three phases to this project.

Phase I of the project is intended to restore the water spreading capacity in the adjacent Tujunga Spreading Grounds (TSG) through renovation of the existing landfill gas collection system for the landfill. Phase II consists of extensive grading and earthwork to provide additional cover as well as establishing proper drainage patterns for the existing site. Phase III involves park development for the site. The final development concept includes the following: soccer fields; baseball fields; basketball courts; children's play area; splash pad; jogging path; bike path; group and individual picnic areas; service facility; concession space; restroom; off-street parking; security fencing and lighting; and landscaped buffer areas.

Watershed: Los Angeles River

Council District(s): 6

Project Total Cost: $8,631,850 Prop O Funds Request: $ $86,620

Date of Project Approval:

Download Concept Report [XX]


Project Title: HANSEN DAM Recreational Area Parking Lot and Wetlands Restoration

Applicant Name: City of Los Angeles Department of Public Works

Project Summary:

The Hansen Dam Recreational Area Parking Lot and Wetlands Restoration Project proposes the installation of bioswales and treatment wetlands to capture, treat and reuse wet and dry weather flows from three parking lots. The project would redesign and resurface portions of one parking lot and redirect flows from this and two other parking lots into a complex of constructed storm water treatment wetlands. In so doing, this project will assist in improving storm water quality within the LA River watershed, help meet the discharge limits of adopted TMDLÕs and remediate water quality impacts to sensitive habitats and special status/endangered species.

Watershed: Los Angeles River

Council District(s): 7

Project Total Cost: $2,220,702 Prop O Funds Request: $2,220,000

Date of Project Approval:

Download Concept Report [3.0MBs]


Project Title: ECHO PARK LAKE REHABILITATION PROJECT

Applicant Name: City of Los Angeles Department of Public Works

Project Summary:

The overall project objective is to improve water quality in both the lake and the Los Angeles River Watershed by rehabilitating the lake so that it can contribute to improving the water quality of urban runoff in the watershed. The retention of urban runoff will enable settling and removal of fine suspended sediments, as well as metals which are attached to the sediments, promote biological processing and removal of nutrients and bacteria from the runoff, and provide flood protection to downstream areas. A significant reduction in trash, heavy metals, bacteria (total coliform, fecal coliform, enterococcus), total suspended solids, oil and grease, and nutrients (nitrogen) will assist the City in meeting the current and future Total Maximum Daily Load (TMDL) requirements.

Project improvements include:

  • Draining the Lake and Removal of Contaminated Lake Sediments, Replacement of Lake Liner
  • Redesign of Concrete Storm Drain Inlet Structures
  • Sediment Basin/Media Filter
  • Lake Outlet Structure
  • Potable Water Inlet
  • Lake Aeration
  • Grassy Swales/Infiltration Strips
  • Porous pavement
  • New "SMART" Irrigation System
  • Educational Signage and Kiosks

Watershed: Los Angeles River

Council District(s): 13

Project Total Cost: $84,263,313 Prop O Funds Request: $84,263,313

Date of Project Approval:

Download Concept Report [4.6MBs]


Project Title: EL SERENO PARKING GROVE

Applicant Name:

Project Summary:

The subwatershed surrounding the Parking Grove is mostly residential with open space along the hillside area adjacent to the project site. The City of Los Angeles, Bureau of Sanitation-Watershed Protection Division has indicated that the tributary area which drains to the site is approximately 4.52 acres, of which it is assumed that 12 percent is impermeable surfaces in the form of rooftops, parking lots, and roads. Currently, sheet flow travels across the Parking Grove location and loads sediment and debris into the storm drain system located at the base of the hill. 0.13 acre-feet of runoff are contributed to the location by the one-year one-hour target storm.

The project location is adjacent to both the Los Angeles Unified School District's (LAUSD) Farmdale Elementary School, which uses the City-owned dirt lot for teacherÕs parking, and the El Sereno Recreation Center and Park. Legally LAUSD does not have an existing agreement allowing for their use of the dirt parking lot, and the El Sereno Recreation Center and Park currently has no offstreet parking. The creation of the Parking Grove will eliminate the presence of sediment in runoff and dust from the dirt lot, as well as provide the community benefit of parking for both the school and the recreation center.

The Parking Grove would improve water quality by creating a Parking Grove that would prevent polluted runoff from entering the storm drain system by infiltrating a portion of the stormwater runoff at the site. Additionally, restroom facilities would replace the existing portable toilets to reduce bacterial loading associated with the overturning of the toilets. A smart irrigation controller system will be installed for watering the fields at the El Sereno Recreation Center and Park, as well as the trees and landscaping proposed for the parking lot, reducing the amount of potable water required for irrigation and runoff.

Proposed stormwater enhancements include the installation of porous pavers, in a location that is currently used as a dirt parking lot, to encourage infiltration of runoff while reducing sediment loading to the storm drain system. The parking lot would be designed to incorporate rows of trees between parking stalls, which will allow for stormwater uptake and biofiltration, in addition to creating shade and enhancing habitat with native vegetation. Additionally, a restroom facility would be installed in the parking lot area to replace the current portable toilets that are commonly overturned resulting in bacterial loading.

Watershed: Los Angeles River

Council District(s): 14

Project Total Cost: $5,533,827 Prop O Funds Request: $2,004,858

Date of Project Approval:

Download Concept Report [2.6MBs]


Project Title: CABRITO PASEO WALKWAY & BIKE PATH

Applicant Names: Los Angeles Neighborhood Land Trust and the City of Los Angeles Bureau of Sanitation, Watershed Protection Division.

Project Summary:
The subwatershed surrounding the Walkway/Bike Path is mostly urbanized and residential with very little open space. The City of Los Angeles, Bureau of Sanitation- Watershed Protection Division has indicated that the underlying storm drain system at the site serves an area of approximately 502 acres. A one-hour one year storm,
using an impervious area of 73 percent and a runoff coefficient of 0.68, results in a runoff volume of 58.74 acre-feet.

Sheet flow to the site is contributed by approximately 16.29 acres. A one-hour one year storm, using an imperviousness of 41 percent and a runoff coefficient of 0.43, results in a sheet flow runoff volume of 1.19 acre-feet. There is the potential for several water quality benefits at the Walkway/Bike Path site, including both dry weather and wet weather runoff management.

Proposed stormwater enhancements include a "smart" irrigation system, bioswales, trees wells and landscaping, a graded decomposed granite walkway which will direct flow to the bioswales, and trash screens at drain inlets within the project site. The proposed facilities will provide pre-treatment of stormwater prior to entering the storm drains by screening trash to prevent it from entering the storm drain as well as providing biofiltration of the flow. The irrigation system will reduce dry weather runoff volume and the use of potable water for irrigation of the landscaped areas at the site. The Walkway/Bike Path project will also provide an underserved community with a valuable community recreation facility.

Watershed: Los Angeles River

Council District(s): 6

Project Total Cost: $4.46 million Prop O Funds Request: $1,337,696

Date of Project Approval:

Download Concept Report [2.5MBs]


Project Title: LOS ANGELES ZOO PARKING LOT

Applicant Name: City of Los Angeles Bureau of Sanitation, Watershed Protection Division

Project Summary:
The existing 33-acre parking lot is impermeable and floods during storm events. The existing asphalt pavement throughout most of the parking lot is badly damaged and cracked, which creates safety issues for cars and pedestrians. The Zoo Project will provide a system of swales and grade adjustments that will be made during repaving to direct surface water to the swales for efficient filtration. Piping may also be installed in the parking lot under the porous pavement to capture water for reuse in landscape irrigation.

Stormwater runoff from the Zoo parking lot directly discharges to the Los Angeles River. The improvements to the Zoo parking lot are intended to minimize runoff to the LA River by capturing stormwater for onsite reuse and possibly infiltrating stormwater to the underlying aquifer; thus improving water quality in the Los Angeles River.

The various best management practices (BMPs) employed throughout the project site will form the educational framework of the parking lot as an exhibit space, providing the Zoo's 1.5 million annual visitors with information about environmental conservation, ecological sustainability, native planting techniques, and alternative energy sources. The parking lot will then become the Zoo's first interaction with visitors and an opportunity to provide an exhibit that is at the cutting edge of environmental technology. Additionally, solar trees, free standing photovoltaic panels, will be installed throughout the parking lot to harness passive solar energy. The parking lot will also encourage alternative methods of transportation by providing easy access to bicycle paths and public transportation.

Watershed: Los Angeles River

Council District(s): 4

Project Total Cost: TBD Prop O Funds Request: $13,904,242.00

Date of Project Approval:

Download Concept Report [984.5Kb]


Project Title: STRATHERN PIT MULTI-USE

Applicant Names: A joint project between the City of Los Angeles Department of Public Works and the Los Angeles County Flood Control District

Project Summary:
The Strathern Pit Multiuse Project proposes to convert a 30-acre gravel pit located in the Community of Sun Valley, Los Angeles to a multipurpose facility dedicated to stormwater retention, treatment, and reuse and is critical to the overall success of the Sun Valley Watershed Management Plan which was developed through a stakeholder process to solve the chronic local flooding problem in the Sun Valley Watershed. The project would consist of developing retention ponds and/or constructed wetlands in the deeper sections of the facility to capture and treat storm flows generated from a Capital Flood event while preserving the shallower sections of the facility for developing terraces of different depths for the use of recreation and wildlife habitat.

Benefits can be realized by acquiring the Strathern Pit site, capturing upstream runoff, conveying the flows through treatment wetlands, and pumping the treated water to the nearby Sun Valley Park for infiltration or to be reused onsite to support treatment wetlands. The remaining open space, at project completion, would be restored ecologically and enhanced with recreational amenities to provide opportunities for wildlife habitat and to serve as a recreational and educational resource to the local community.

Watershed: Los Angeles River

Council District(s): 6

Project Total Cost: $22.5 million Prop O Funds Request: $17.8 million

Date of Project Approval:

Download Concept Report [6.5MBs]