Site Investigation, Remediation & Closure

Site Investigation, Remediation and ClosureCompleting an absence/presence Phase II investigation or a complicated Resource Conservation & Recovery Act (RCRA) Facility Investigation (RFI)/Corrective Measures Study (CMS) should be a matter of expertly-designed investigation and analysis, not guesswork. At Three Sixty Safety, we pride ourselves on implementing investigations to maximize data usability, define extent, minimize gaps and achieve the goals and objectives of our clients.

We assist our clients with comprehensive site investigation services, which include conducting environmental sampling (soil, groundwater, waste, and vapor), presenting data in figures and tables, evaluating the data, preparing conceptual site models (CSM) and creating closure plans. We routinely utilize risk assessment and modeling to facilitate this work.

We can provide clients with such closure services as soil and/or groundwater treatment/removal, vapor intrusion mitigation, underground storage tank (UST) removal, facility decontamination, and contaminant/capping that are conducted in a timely and cost-effective manner and with strict adherence to applicable state and federal regulations.

Three Sixty Safety’s team of technical experts also stays abreast of the latest regulatory guidelines with current technology and shares our knowledge with clients throughout the process.


Our Site Investigation, Remediation, & Closure services include:

Site Investigation

  • Risk Assessment
  • Site Evaluation
  • Subsurface Investigation
  • Litigation Support
  • Groundwater Modeling
  • Surface Water/Sediment Evaluation
  • Susceptible Area Evaluation
  • Pilot Testing
  • Regulatory Reporting
  • Exposure Assessment
  • Data Evaluation & Statistical Analysis
  • Contaminant Fate Evaluation
  • Soil & Groundwater Evaluation
  • Vapor Intrusion Evaluation


  • Remedial Design
  • Waste Characterization/Disposal
  • Program Implementation
  • Remedial Estimating
  • Public Outreach & Education
  • Emergency Response Coordination & Reporting
  • Corrective Action Implementation
  • Field Services (See Field Services)
  • Vapor Intrusion Mitigation
  • Trust Fund/Insurance Cost Recovery
  • ISCO/ISCR (In-Situ Chemical Oxidation/Reduction) & Chemical Injection
  • Interim Measures Work
  • Remedial Work Plans
  • Alternatives Evaluations


  • RCRA Closure
  • Brownfields Closure
  • State Voluntary Program
  • Leaking UST
  • State Mandated Cleanup
  • Landfill Closure
  • CERCLA Removal Action
  • Risk Based Closures