
Assess · Resolve · Strengthen
Environmental, Health, Safety and Sustainability 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.

Hyatt Regency Century Plaza
UCLA
Valley Generating Station
Rose Bowl Stadium
Hollywood Park / LA Rams
LAFC Stadium
One Beverly Hills
Griffith Observatory
Port of Los Angeles
Macy's Inc.
Santa Susana Field Lab
Sunset Bronson Studios
California Dept. of Transportation
Marriott AC Hotel
Tesoro Refinery
Exxon Refinery
Santa Ana Civic Center
Los Angeles Times Building
Beyond Meat
The Georgetown Company
Hyperscale Data Centers
Hyatt Regency Century Plaza
UCLA
Valley Generating Station
Rose Bowl Stadium
Hollywood Park / LA Rams
LAFC Stadium
One Beverly Hills
Griffith Observatory
Port of Los Angeles
Macy's Inc.
Santa Susana Field Lab
Sunset Bronson Studios
California Dept. of Transportation
Marriott AC Hotel
Tesoro Refinery
Exxon Refinery
Santa Ana Civic Center
Los Angeles Times Building
Beyond Meat
The Georgetown Company
Hyperscale Data Centers
Long Beach Civic Center
LA Unified School District
MLK Jr. Medical Campus
Kiewit Rail M&O Facility
Chanate Hospital
Rexford Industrial Portfolio
Valley Presbyterian Hospital
Nasmyth TMF
CH2M Hill
Kennedy Wilson
Eastern Columbia Lofts
San Bernardino Community College
Cal State LA
Aerospace & Defense Portfolio
Agua Mansa Commercial Park
Be Well Irvine
River Wilderness Park
City of Oceanside
Refinery Demolition
Housing Authority, City of LA
Premier SoCal University
Cacique
SBCCD Safety & Ergonomics
Long Beach Civic Center
LA Unified School District
MLK Jr. Medical Campus
Kiewit Rail M&O Facility
Chanate Hospital
Rexford Industrial Portfolio
Valley Presbyterian Hospital
Nasmyth TMF
CH2M Hill
Kennedy Wilson
Eastern Columbia Lofts
San Bernardino Community College
Cal State LA
Aerospace & Defense Portfolio
Agua Mansa Commercial Park
Be Well Irvine
River Wilderness Park
City of Oceanside
Refinery Demolition
Housing Authority, City of LA
Premier SoCal University
Cacique
SBCCD Safety & ErgonomicsBy the Numbers
Decades of expertise, thousands of successful projects

LAFC Stadium, Los Angeles

The Citadel EHS team

Metrolink commuter rail
What We Do
Our Expertise
Integrated solutions spanning environmental science, industrial hygiene, safety consulting, and sustainability.
Engineering & Environmental Sciences
Phase I/II, soil-vapor/groundwater investigations, remediation design, and closure strategy from due diligence through completion.
02Industrial Hygiene
Hazard assessments, exposure monitoring, IAQ, noise, Legionella, PPE, plus OSHA compliance, construction safety, confined space, and training.
03Building Sciences & Hazardous Materials Management
Surveys, abatement oversight, and clearance for asbestos, lead, PCBs — safe renovations, demolitions, and re-occupancy.
04Environmental Compliance & Permitting
SWPPP, air district rules, NPDES, SPCC, CUPA, audits, training — keeping projects permitted, compliant, and moving.
05Air Quality
Emissions reporting, permitting, and consulting for regulatory compliance.
06Safety Consulting
Customized safety solutions that drive organizational success through risk reduction, culture building, program development, and compliance.
07Moisture Intrusion & Microbial Consulting
Preventing mold and water damage to ensure building durability and occupant health.
08ESG & Sustainability
ESG strategy and reporting, LEED/WELL consulting, GHG inventories, carbon roadmaps, and practical metrics for decision-making.
09Green Building Standards
WELL, BREEAM, and IEQ certification
Industries we serve
Industry-specific expertise across the markets we serve
Each industry carries its own regulatory weight and operational reality. We pair full EHS&S service depth with deep industry-specific experience.
Architecture, Engineering & Construction
Aerospace & Defense
Commercial Real Estate & Development
Data Centers & Technology
Education
Energy & Utilities
Food & Beverage
Government & Public Agencies
Healthcare
Hospitality
Industrial & Manufacturing
Legal & Professional Services
Life Sciences & Biotechnology
Retail & Commercial
Sports & Entertainment
Transportation & Aviation
Water & Wastewater
Trusted by Leading Organizations
Nationwide reach
11 offices, coast to coast
From Glendale to Charlotte, our teams pair the full Citadel EHS service line with deep regional regulatory expertise. One firm, one consistent standard, wherever you operate.
Recent activity
News and Updates
The latest from Citadel EHS — company news, insights, and where you can find us next.

Latest article · Blog
WAIRE Compliance for 2026 and Annual Reporting in 2027
As 2026 comes to a close, warehouse owners and operators should review their obligations under South Coast AQMD’s Warehouse Actions and Investments to Reduce Emissions (WAIRE) Program. For applicable operators, the Annual WAIRE Report for the 2026 compliance year is due January 31, 2027. Preparing now gives your team time to check records, confirm compliance options, and address documentation gaps before reporting.
Read article→
Article · Blog
Washington Dangerous Waste Reporting Requirements: Key Deadlines for Generators
Washington businesses that generate dangerous waste must manage more than containers and manifests - they must also meet state reporting and notification deadlines. Understanding these requirements can help facilities avoid missed filings, unexpected generator-status issues, and compliance findings during Washington Department of Ecology inspections.
Read article→Upcoming event
Bisnow’s Orange County Development, Construction & Design Summit
NAVIGATING COSTS, CAPITAL & COMPLEXITY TO DELIVER THE NEXT WAVE OF OC DEVELOPMENT with Cityview, BKM Management Company, Scannell Properties, Santry Development & More
Time 8:am - 11:30
Location 17900 Jamboree Rd, Irvine, CA 92614
Citadel has managed some of the largest projects on campus. Their attention to client interests has resulted in projects being performed safely, on schedule and without unnecessary additional costs. Citadel is extremely professional and capable. I have always welcomed, in fact, preferred, that Citadel be employed on large projects as well as the smaller ones.
Victor Kennedy
Former Director, Building and Safety · UCLA Medical Center

Citadel Cares
What Citadel Cares is
Citadel Cares is our employee-led community program. Our team picks the causes, plans the events, and shows up — on company time and their own.
Learn about Citadel Cares→Work with us
Ready to Strengthen Your EHS&S Program?
Partner with Citadel EHS to develop comprehensive, integrated environmental health, safety, and sustainability solutions tailored to your organization's unique challenges.