Case Studies
Projects
From focused technical assignments to complex, multidisciplinary projects and long-term programs, our work spans the full lifecycle of environmental, health, safety, and sustainability challenges.
Explore how Citadel partners with clients to assess risk, navigate regulatory requirements, solve complex technical problems, support construction and operations, and advance projects from planning through completion.
Gibbs, Giden, Locher, Turner & Senet LLP
Rose Bowl Stadium
Citadel EHS (Citadel) provided comprehensive environmental consulting services to the Rose Bowl Operating Company during the $152 million modernization of the historic Rose Bowl Stadium in Pasadena, California. Working alongside project stakeholders during one of the stadium's most significant capital improvement programs, Citadel helped support renovations designed to enhance the fan experience while preserving the character and historic integrity of this National Historic Landmark.
Macy's, Bloomingdale's & Robinsons-May
Macy's Inc.
Los Angeles Times Building
Los Angeles Times Building
Clark Construction
Long Beach Civic Center
Griffith Observatory
Griffith Observatory
California Commercial Real Estate Services
Be Well Irvine Campus
KPRS Construction Services
Agua Mansa Commercial Park
Healthcare Realty
Healthcare Realty Regulated Materials & Building Sciences Consulting
Cadence Academy Preschool
Lead in Drinking Water Testing
Port of Long Beach
Port of Long Beach
Citadel EHS has supported construction and infrastructure projects at the Port of Long Beach for more than a decade, providing multidisciplinary environmental, health, safety, and sustainability services across complex, active waterfront environments. Working with the Port and its construction partners, Citadel helps project teams identify environmental risks, respond to unexpected field conditions, maintain regulatory compliance, protect workers, and keep critical construction activities moving.
Metrolink
Stormwater Monitoring & Reporting
Kennedy Wilson
NPDES Monitoring & Reporting
Kennedy Wilson
NPDES Compliance & OWTS Monitoring
Onni Group
NPDES Monitoring & Reporting
Orange County Transportation Authority
Industrial Stormwater Assistance
The Nature Conservancy
Taylor Yard / Bowtie Wetland Project
Mark 1 Restoration
Eastern Columbia Lofts
Watershed Conservation Authority
ADL Assessment & Compliance Consulting
Nature's Specialties
Hazardous Materials Business Plan Compliance
Citadel EHS provides hazardous materials compliance consulting for Nature's Specialties' manufacturing facility in Corona, California — initiated in response to a Notice of Violation from the Corona Fire Department, the local CUPA, requiring updates to the facility's Hazardous Materials Business Plan under the California Fire Code.
Rio Hondo College
Hazardous Materials & Waste Compliance
Envicom Corporation & Bhate Environmental Associates
Santa Susana Field Lab
California Department of Transportation (Caltrans)
California Department of Transportation
Port of Los Angeles
Port of Los Angeles
Kiewit / Foothill Transit Constructors
Kiewit Rail M&O Facility
Hudson Pacific Properties
Sunset Bronson Studios
Hollywood Park Land Company, LLC / Turner Construction Company
Hollywood Park & SoFi Stadium
Legends Project Development on behalf of Los Angeles Football Club
Los Angeles Sports Arena Redevelopment
The Georgetown Company
The Georgetown Company
The Georgetown Company engaged Citadel EHS to conduct a Phase I Environmental Site Assessment to identify potential hazardous materials contamination at their Los Angeles property on South Broadway, including evaluation of surface contamination, underground storage tanks, and vapor intrusion risks.
Valley Presbyterian Hospital / Jensen & Partners
Valley Presbyterian Hospital
Nasmyth TMF
Nasmyth TMF
CH2M Hill
CH2M Hill
Pivotal Group / Woodridge Capital
Hyatt Regency Century Plaza Hotel
County of Sonoma
Chanate Hospital, County of Sonoma
Housing Authority for the City of Los Angeles (HACLA)
Housing Authority, City of Los Angeles
Tesoro Refinery
Tesoro Refinery
ExxonMobil
Exxon Refinery
University of California, Los Angeles (UCLA)
University of California, Los Angeles
Since 1999, Citadel EHS has been a trusted partner for the University of California, Los Angeles (UCLA), providing a broad spectrum of Environmental, Health, and Safety (EHS) services across nearly 300 projects. Citadel’s work has included high-profile seismic and life safety upgrade projects across UCLA’s 411-acre campus, as well as environmental, hazardous materials, indoor air quality, exposure assessment, and safety compliance efforts. Representative work includes projects at the UCLA School of Dentistry / CHS Building, Co-Generation Plant, Wilshire Glendon Building, Nimoy Theatre, Southwest Campus Apartments, On-Campus Housing, Harbor UCLA Medical Center, and the Neuropsychiatric Replacement Hospital.
Los Angeles Unified School District (LAUSD)
Los Angeles Unified School District
San Bernardino Community College District
SBCCD Hazardous Materials Management
San Bernardino Community College District
SBCCD Safety & Ergonomics
California State University, Los Angeles
Cal State University, Los Angeles
Private Developer
Bay Area Redevelopment Portfolio
Private Real Estate Investment Group
Southern California Redevelopment Portfolio
California Department of Toxic Substances Control (DTSC)
DTSC Cleanup in Vulnerable Communities Initiative
Private Property Owner & Redevelopment Team
Marin County Dry Cleaner Remediation
Private Industrial Property Owner
Former Electroplating Facility, San Mateo County
Citadel EHS is leading the investigation and remediation of a 3.5-acre former electroplating facility in San Mateo County under the oversight of the San Francisco Bay Regional Water Quality Control Board (SFBRWQCB). Site investigations identified chlorinated volatile organic compounds (VOCs), including trichloroethene (TCE), as well as PFAS impacts associated with historical industrial operations.
Sensor Systems, Inc.
Sensor Systems Aerospace Facility
Private Industrial Property Owner
Emeryville Industrial Redevelopment Property
Community Development Organization
Oakland Affordable Senior Housing
Prologis
Former Kaiser Aerotech Facility
Industrial Enterprises
Industrial Enterprises, Santa Ana
1000 Sutter, LLC / Episcopal Community Services of San Francisco
1000 Sutter Street UST Closure
Rexford Industrial Realty, L.P.
Rexford Industrial Real Estate Portfolio
San Diego Unified School District (SDUSD)
San Diego Unified School District
Silverado Contractors (on behalf of LADWP)
Valley Generating Station
Citadel EHS (Citadel) was engaged by Silverado Contractors, Inc. to provide Environmentally Regulated Materials (ERMs) Consulting Services for the planned demolition of Units 1-4 at the Valley Generating Station, operated by LADWP, located at 11801 Sheldon Street, Sun Valley, California.
Beyond Meat
Beyond Meat Food Innovation Facilities
Cacique, Inc.
Cacique Food Manufacturing Operations
Griffin Structures, Inc.
Santa Ana Civic Center Redevelopment
City of Oceanside
City of Oceanside Health & Safety Support
County of Los Angeles Public Works
Harbor-UCLA Medical Center
County of Los Angeles, Department of Public Works
Martin Luther King, Jr. Medical Campus
BH Luxury Residences LLC
One Beverly Hills
Seaview Investors, LLC / SVI Airport, LLC
Marriott AC Hotel Redevelopment
Illumina, Inc.
Illumina Multi-Site Confined Space Safety Assessment
Illumina, Inc. retained Citadel EHS to perform a comprehensive confined-space evaluation across four manufacturing sites in the Americas. The project was designed to identify and classify confined spaces under Cal/OSHA 8 CCR §5157 and Federal OSHA 29 CFR §1910.146, identify associated hazards, and develop recommendations for personal protective equipment and rescue methods.
Los Angeles World Airports / Myers-Griffith and PCL Construction
LAX ConRAC / Manchester Square Redevelopment
Bachem Americas
Bachem Pharmaceutical Manufacturing EHS Support
City of Thousand Oaks
City of Thousand Oaks Comprehensive Health & Safety Program
Eaton Aerospace Group, Mission Systems Division
Eaton Aerospace Confined Space Assessment & OSHA Compliance
Centennial GH Partners
Los Angeles County General Hospital Redevelopment
Confidential Aerospace & Defense Client
ESG, Carbon Accounting & Climate Risk Assessment
Confidential Luxury Jewelry Manufacturer
ESG, Climate Risk Assessment & Business Continuity Planning
Confidential Retail Client
WAIRE Program Compliance
Confidential Client
Groundwater & Wastewater Compliance
Citadel EHS provides ongoing groundwater and wastewater compliance consulting services at a Bottling Plant to support compliance with a Monitoring and Reporting Program (MRP) and associated Waste Discharge Requirements (WDRs) issued by the California Regional Water Quality Control Board, San Diego Region (SDRWQCB).
Confidential Client
Industrial Wastewater Permit Transfer
Confidential Global Real Estate Company
Annual Environmental Audits
Confidential Energy Client
Major Refinery Conversion
Confidential Southern California University
Premier SoCal University
Confidential Outdoor Apparel Manufacturer
Apparel Manufacturer Litigation Support
Confidential Aerospace Manufacturer
Aerospace Manufacturer Energy Audit
Confidential Petrochemical Manufacturer
Chemical Manufacturer Cal/VPP Recognition
Confidential Aerospace Manufacturer
Aerospace Manufacturer Employee Safety
Confidential Aerospace & Defense Manufacturer
Aerospace Manufacturing Facility Support
Citadel EHS provides ongoing environmental, industrial hygiene, and building sciences consulting for a major aerospace and defense manufacturer, supporting facility maintenance, infrastructure improvements, renovation, construction, and ongoing operations within active, highly controlled manufacturing environments.
Confidential Aerospace & Defense Client
Aerospace & Defense Client Portfolio
Confidential Major Apartment Community Owner & Operator
Multifamily Moisture & Microbial Consulting Program
Confidential Publicly Traded Aerospace & Aviation Company
Corporate Climate Disclosure & GHG Reporting Program
Confidential Global Technology Company
Hyperscale Data Center Noise Assessment
Confidential Client Petroleum Refinery
Refinery Emergency Fire Asbestos Consulting
Confidential Nuclear Client
Power Plant Decommissioning & Demolition
Confidential National Big-Box Retailer
Multi-State Asbestos & Due Diligence Program
Confidential Healthcare Client
Healthcare System Occupational Exposure & Industrial Hygiene Consulting
Confidential Healthcare Client
Healthcare Clinic Industrial Hygiene & Indoor Environmental Quality Consulting
Citadel EHS has provided industrial hygiene, indoor environmental quality, and facility-related environmental health consulting services for a healthcare sector client in Washington, including an indoor air quality assessment at an occupied healthcare clinic near Tacoma.