National coverage
EHS&S consulting across the United States
From a coast-to-coast network of 11 offices, Citadel EHS serves employers across every region with consistent federal- and state-level regulatory expertise. One account team, one set of standards, applied to every site in your portfolio.
11
Offices coast-to-coast
4
States with offices
30+
Years in EHS&S
50
States available
Where we serve
Our office network is the backbone of day-to-day field work and local agency relationships. Multi-state engagements draw on the full firm regardless of where the work happens.
West
Midwest
South
Northeast
Recent multi-state project work includes engagements in Nevada, Arizona, alongside ongoing operations from our offices in Washington, Oregon, California, North Carolina.
Built for multi-state employers
For Fortune 500 manufacturers, real-estate portfolios, energy operators, ESG reporters, and federal contractors with sites in many states, Citadel EHS provides single-vendor EHS&S program delivery designed to scale.
Single-vendor consistency
One Citadel EHS account team, one set of standards, one reporting cadence — applied across every site in your portfolio, regardless of state. We harmonize variation between Cal/OSHA, federal OSHA, and state-plan OSHA programs into a single internal compliance framework.
Multi-jurisdiction permitting
Federal, regional, state, and local permits coordinated from one program manager. Our consultants regularly navigate EPA, the 10 EPA regional offices, federal-plan OSHA, 22 state-plan OSHA programs, and state environmental agencies in parallel.
Roll-up reporting
EHS&S metrics, GHG inventories, OSHA 300 logs, Tier II reports, and ESG disclosures rolled up across all sites for corporate-level reporting. Designed to feed Board, ESG, and audit-ready outputs without site-by-site reconciliation.
Audit-ready documentation
Common documentation standards, version control, and recordkeeping practices across all locations. When a federal inspector or corporate auditor visits any site, the program reads consistently.
Federal regulatory coverage
Our consultants work across the federal EHS&S rule set every day, independent of state location. When a client operates in a federal-plan OSHA state or under federal environmental jurisdiction, our team is fluent in the underlying federal programs.
Federal OSHA
29 CFR 1910 (General Industry), 1926 (Construction), 1928 (Agriculture), 1915-1919 (Maritime). PSM, HazCom 2012, Respiratory Protection, Lockout/Tagout, Confined Spaces, Bloodborne Pathogens, Recordkeeping (1904).
EPA — Clean Air Act
Title V Operating Permits, NSR/PSD, NESHAP/MACT, Risk Management Program (RMP) under §112(r), GHG reporting under 40 CFR 98, Compliance Assurance Monitoring.
EPA — Clean Water Act
NPDES permits (industrial, construction, MS4), SPCC plans under 40 CFR 112, FRP, pretreatment programs, wetlands and Section 404 coordination with USACE.
RCRA & CERCLA
Hazardous waste generator status (LQG/SQG/VSQG), TSDF compliance, contingency planning, RCRA Corrective Action. CERCLA Phase I/II ESAs (ASTM E1527-21), All Appropriate Inquiries, brownfield revitalization.
NEPA
Environmental Assessments (EAs), Environmental Impact Statements (EISs), Categorical Exclusion documentation, coordination with federal lead agencies on infrastructure, energy, and federal property development.
DOT Hazmat
49 CFR Parts 100-185 for hazardous materials transportation, HM-181/HM-126F training, security plans, IATA/IMDG for international shipments.
Why clients choose Citadel EHS for national engagements
30+ years of EHS&S practice
Founded in 1993, Citadel EHS has navigated every major federal EHS&S rulemaking and state regulatory evolution since the early HazCom and SARA Title III era.
A team that stays
Our retention is among the highest in the industry, so the team assigned to your account is the team that stays.
Coast-to-coast offices
11 offices from Glendale to Charlotte put credentialed CIHs, CSPs, CHMMs, and PEs within driving distance of most major U.S. metro areas.
Federal and defense experience
We support defense contractors and federal facilities with NEPA documentation, environmental compliance, industrial hygiene, and project-level work consistent with federal requirements.
Our coast-to-coast office network
11 offices put a credentialed consultant within driving distance of most major U.S. metro areas.
Work with us
Need EHS&S support across multiple states?
Talk to our team about single-vendor EHS&S program delivery, federal compliance, and multi-state coordination.