Citadel EHS
Providing EHS&S Consulting Services for the Life-Cycle of Real Estate and Business
Citadel EHS is a market-leading environmental, health, safety, and sustainability (EHS&S) consulting firm helping organizations create safer, more sustainable spaces.
Integrated delivery of services
One Brand, One Experience.
At Citadel EHS, we assess environmental health, safety, and sustainability challenges, resolve them swiftly, and strengthen the value and resiliency of our clients’ real estate portfolios and operations.
Building Sciences & Hazardous Materials Management
Surveys, abatement oversight, and clearance for asbestos, lead, PCBs - safe renovations, demolitions, and re-occupancy.
Environmental Compliance & Permitting
SWPPP, air district rules, NPDES, SPCC, CUPA, audits, training - keeping projects permitted, compliant, and moving.
Engineering & Environmental Science Services
Phase I/II, soil-vapor/groundwater investigations, remediation design, and closure strategy from due diligence through completion.
ESG & Sustainability Consulting
ESG strategy and reporting, LEED/WELL consulting, GHG inventories, carbon roadmaps, and practical metrics for decision-making.
Moisture Intrusion & Microbial Consulting
Preventing mold and water damage to ensure building durability and occupant health.
Industrial Hygiene & Safety
Hazard assessments, exposure monitoring, IAQ, noise, Legionella, PPE, plus OSHA compliance, construction safety, confined space, and training.
Safety Consulting
Customized safety solutions that drive organizational success through risk reduction, culture building, program development, and compliance.
Air Quality Management
Providing emissions reporting, permitting, and consulting for regulatory compliance.
Who We Serve
We bring our expertise to various environments, delivering tailored environmental, health, and safety solutions where they’re needed most.
- Architecture & Engineering
- Commercial Real Estate
- Construction
- Cultural & Historical Institutions
- Energy & Utilities
- Sports & Entertainment
- Healthcare & Life Sciences
- Higher Education
- K-12 Education
- Hospitality
- Industrial & Manufacturing
- Insurance
- Legal
- Multifamily Residential
- Non-Profits
- Property Management
- Real Estate Development
- Retail
- Transportation & Infrastructure
- Government & Municipalities
Built on Values. Driven by Results.
Choosing Citadel EHS means partnering with a team that stands out for its expertise, collaboration, and values-driven approach. At Citadel EHS, we don’t just deliver services—we build relationships and create solutions that make a difference.
Comprehensive Expertise
We are a one-stop shop, with subject matter experts leading each of our specialized practices. This ensures deep expertise across all areas of environmental, health, sustainability, and safety services.
Seamless Service Integration
Our practices work seamlessly together to provide a singular, consistent experience for stakeholders. This integration simplifies processes and ensures cohesive solutions.
Engaged Staff
Our employees drive our success. With exceptional retention rates and recognition as a "Best Places to Work," our team delivers results through dedication and expertise.
Values-Based Company
Guided by our 22 principles, we prioritize integrity, accountability, and collaboration in every project we undertake. These values shape how we serve our clients and build lasting partnerships.
Meet Our Clients
Since 1993, Citadel EHS has been providing technically sound, cost-effective solutions to complex environmental, health, safety, and sustainability challenges in various industries.
Victor Kennedy, Former Director
Building and Safety UCLA Medical Center
Robert McCray,
Occupational Safety & Health Specialist
U.S. Department of Veterans Affairs
Risk Manager,
Confidential State University in California
The Latest News from Citadel EHS
Summary Partial discharge (PD) inside energized equipment can generate ozone (O₃) in electrical distribution rooms. Because PD is intermittent and many rooms are low‑dilution spaces, short‑term spikes can occur and persist long enough to exceed occupational ceiling and short‑term limits. In a recent anonymized assessment, spot checks indicated an elevated condition, and multi‑week logging documented … Read more
Spencer speaks with Loren Witkin of Citadel EHS about the world of environmental, health, and sustainability consulting. Don’t miss his insights on how to navigate real estate development in California and why the most challenging projects are in Citadel’s sweet spot. Don’t miss it!: https://next.frame.io/share/ff8f7c6d-7a15-4573-8f34-8779c69536d0/reel/fa101ef9-f629-4f0b-a27f-1efd4b553e4b/cb9156f3-7f86-4c4a-9886-e29fd28b40cd
GLENDALE, Calif., Sept. 18, 2025 /PRNewswire/ — Citadel EHS (Citadel) is proud to announce the opening of a new office in Portland, Oregon, reinforcing its commitment to delivering premier industrial hygiene, safety, building science, environmental, and sustainability consulting across the Pacific Northwest. This expansion builds on Citadel’s recent growth, which already includes a flourishing office in Seattle, Washington, enhancing … Read more