ENGINEERING SOLUTIONS FOR EVERY SECTOR

We are scientists, geologists, engineers, toxicologists, and technical support professionals dedicated to providing clients with strategic solutions to their environmental and regulatory liabilities. Citadel EHS offers remediation services that extend from initial site investigation through the remedial design and implementation of mitigation/cleanup programs. We develop and implement practical and cost-effective remedies to help clients restore the value of their properties. Our public and private sector clients include brownfield developers, real estate investors, attorneys, insurance companies, industrial companies, and dry cleaners, as well as State agencies throughout the State of California.

Citadel’s experienced scientists use technical expertise, creative problem solving, and practical experience to provide value to clients, while staying abreast of California’s evolving regulatory requirements. Citadel provides the following technical environmental consulting services for our diverse list of clients across private and public sectors: • Environmental Site Assessments and Characterization • Remedial Investigation/Feasibility Studies (RI/FS) • Remedial Engineering and Design and Implementation • Risk Assessment/Toxicology • Regulatory Negotiation and Site Closure Strategies • Brownfield Redevelopment • Grant Funding Application and Legal Support Services.

SERVICES PERFORMED

Due Diligence & Property Evaluations

  • Phase I and II Environmental Site Assessments
  • Historical Site Use and Regulatory Records Reviews
  • Soil and Groundwater Sampling for Property Transactions
  • Vapor Intrusion & Indoor Air Assessments
  • Review of Environmental Reports for Third Parties (Buyers, Sellers, Lenders)
  • Remediation Cost Estimates and Liability Assessments
  • Brownfield Redevelopment Support
  • Coordination with Legal and Real Estate Teams

Engineering and Remediation

  • Experience with a wide range of contaminants, including petroleum hydrocarbons, chlorinated VOCs, metals, PCBs, and PFAS
  • Remedial Investigation and Feasibility Studies (RI/FS)
  • Remedial Action Plans (RAP) and Corrective Action Plans (CAP)
  • Soil, Soil Vapor, and Groundwater Remediation Design and Implementation
  • In-Situ and Ex-Situ Treatment Technologies
  • Soil Vapor Extraction (SVE) and Air Sparging Systems
  • Excavation and Offsite Disposal Oversight
  • Remediation System Operation, Maintenance, and Optimization
  • Pilot Testing and Bench-Scale Studies
  • Post-Remediation Monitoring and Site Closure Support

Human Health Risk Assessments

  • Human Health Risk Assessments (HHRA)
  • Screening-Level Risk Assessments
  • Vapor Intrusion Risk Assessments
  • Conceptual Site Models and Exposure Pathway Analysis
  • Development of Site-Specific Cleanup Goals
  • Ecological Screening-Level Risk Assessments
  • Risk Communication & Stakeholder Engagement

Property Redevelopment & Construction Monitoring

  • Environmental Oversight During Site Redevelopment and Construction
  • Soil Management Plans (SMP) and Implementation Support
  • Contaminated Soil Identification, Segregation, and Disposal Coordination
  • Groundwater and Soil Vapor Mitigation During Construction
  • Dust, Odor, and Air Monitoring Plans and Field Oversight
  • Construction Support for Vapor Intrusion Mitigation System Installation
  • Preparation of Closure Documentation and Construction Completion Reports

Vapor Intrusion Evaluations and Mitigation Design

  • Methane and VOC Investigations and Risk Evaluations
  • Vapor Migration Pathway Evaluations
  • Passive and Active Vapor Barrier Design and Implementation
  • Vapor Barrier Inspection and Monitoring Plans

MEET THE EXPERTS

Mark Drollinger

M.Eng, CSP, CHMM, EiT

Principal, Engineering & Environmental Sciences

Greg S. McIver

Principal Scientist, Engineering & Environmental Sciences

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