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Los Angeles

LA County Metropolitan Transportation Authority

2026-04-02T15:56:46-06:00March 17th, 2026|

The LA County Metropolitan Transportation Authority (Metro) requested sustainability engineering services for water resources, conservation and compliance. Under legal obligations Metro is required to track, implement, and report on the following categories: climate change & resiliency, energy, solid waste & recycling, and water.  In order to maintain compliance in daily operations and capital projects, Geosyntec is tasked with providing research, analysis, planning, project development, and engineering services relating to the full life cycle of Metro's water sustainability and compliance programs.

Industrial Wastewater Discharge Optimization and Waste Management Services

2026-04-06T15:24:19-06:00August 13th, 2025|

Geosyntec was engaged by a citrus juice production client that operates a fresh food production facility in Los Angeles County. The facility generates wastewater mixed with citrus pulp and other lemon debris from equipment and facility cleaning and refrigerator condensate. The facility’s industrial wastewater pretreatment process removes lemon particles, debris, and suspended oils from wastewater through a dissolved air flotation system (the GEM System) that causes the lemon material to float. This floating material (also known as flocculated lemon solids) is skimmed off the water, accumulates in a conical tank, and is later disposed of off-site. This facility is permitted to discharge industrial wastewater to the Los Angeles County Sanitation Districts (LACSD) under the Industrial Wastewater Discharge Permit (IWDP). LACSD notified the client that payment of supplemental sewer capacity fees could apply based on their industrial wastewater discharge quantity and quality characteristics.

Industrial Wastewater Management

2026-04-06T15:25:19-06:00August 12th, 2025|

The Los Angeles County Metropolitan Transportation Authority (Metro) owns and operates several bus washing facilities within the transportation tunnel in the greater Los Angeles area. Because the facilities discharge wastewater into the sanitary sewer, they maintain several industrial wastewater discharge permits (IWDPs) with utility companies including Los Angeles Sanitation District (LASAN), Los Angeles County Sanitation District (LACSD), and other local sanitation companies. The Metro facilities we support have different wastewater-flow quantity and quality, pre-treatment systems, and criteria for monitoring and reporting. To manage these variables, Geosyntec provides comprehensive industrial wastewater management services to Metro to support permitting and compliance.

Port of Los Angeles Web Data Tools

2026-04-07T09:05:25-06:00November 22nd, 2024|

The Port of Los Angeles (POLA) occupies 7,500 acres of land and water with 43 miles of waterfront. Over the last two decades, as part of their harbor toxics total maximum daily load (TMDL) strategic and compliance monitoring programs, POLA has collected a large volume of environmental data, including sediment, stormwater, surface-water, and tissue-chemistry data. However, these data were not easily accessible or usable to POLA staff. The older data were stored in an obsolete database and more recent data were stored as discrete, electronic data deliverables. To address this, an interactive webmap was developed to allow easy access to data and enable custom query filters.

Rio Hondo Confluence Area Project

2026-04-02T15:57:27-06:00January 21st, 2021|

The Rio Hondo Confluence Area Project (RHCAP) is located in southern Los Angeles County, California, at the confluence of the LA River and Rio Hondo flood channels in the cities of South Gate, Lynwood, and Downey. The confluence area is made up of several potential project opportunities that can be phased in accordance with community needs and other planning efforts.

Malibu Creek TMDL and North Santa Monica Bay Regional Watershed Implementation Plan

2026-05-26T08:54:35-06:00August 14th, 2020|

The Malibu Creek Total Maximum Daily Loads (TMDL) addresses bacteria water quality impairments in the Malibu Creek Watershed. The TMDL is consistent with the Santa Monica Bay Beaches Bacteria TMDL, which was approved by the United States Environmental Protection Agency (EPA).

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Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, energy, and civil infrastructure.

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