
Orange County
Environmental consulting inOrange County
More than 30 years of environmental, health, safety, and sustainability expertise for employers across Orange County.
Citadel EHS supports Orange County's dense concentration of technology, medical device, biotech, and advanced manufacturing employers. We work with R&D campuses, contract manufacturers, and commercial property owners across the county.
We work with Cal/OSHA, the South Coast AQMD, and the Santa Ana Regional Water Quality Control Board on projects across Orange County. Our Irvine office is the local point of contact.
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Our Irvine office
Our local office for projects anywhere in Orange County.
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Featured
Featured projects in the Orange County region
A selection of our work across Orange County.

Be Well Irvine Campus
California Commercial Real Estate Services manages the Be Well Irvine Campus Project, a proposed redevelopment in Irvine, California, designed to address critical mental health and substance abuse treatment needs for Orange County residents. The site is located within and adjacent to the southwestern boundary of the former Marine Corps Air Station (MCAS) El Toro and includes buildings previously used for warehouse, storage, office, and training operations. The facilities were decommissioned in 1999.

Industrial Stormwater Assistance
Citadel EHS provides ongoing industrial stormwater compliance and regulatory reporting services for OCTA under a Health, Safety and Environmental Compliance Support Services on-call task order supporting multiple maintenance facilities throughout Orange County.

Industrial Enterprises, Santa Ana
Citadel EHS guided Industrial Enterprises through a seven-year environmental investigation, remediation, and regulatory closure process for a commercial property in Santa Ana, California. Beginning with environmental due diligence and subsurface investigation in 2019, Citadel developed and implemented a phased strategy to characterize soil, groundwater, and soil vapor conditions, address petroleum-related impacts, and establish a technically defensible path toward regulatory closure.

Santa Ana Civic Center Redevelopment
The Santa Ana Civic Center Redevelopment Program is transforming a significant portion of Orange County's government campus through the replacement of aging facilities with a modern mixed-use civic complex that will consolidate public services and include new event and conference facilities. The long-term redevelopment effort is being implemented in multiple phases and requires careful management of environmental risks associated with demolition and construction activities.