Site Investigation and Characterization

Our field investigations accurately define the vertical and lateral extent of chemically impacted media to allow focused evaluation of remediation options and costs. We adhere to exacting quality assurance/quality control procedures to obtain results that support risk analysis, regulatory negotiation, engineering design, and our clients’ environmental decisions. Northgate’s understanding of subsurface chemical fate and transport processes facilitates use of site-specific cleanup goals and the design cost-effective remediation programs. We offer a full suite of investigation and characterization activities including:     

• Phase II Environmental Site Assessments (ESAs)       
• Remedial investigations and feasibility studies (RI/FS)
• Conceptual site model development    
• Contaminant source identification
• Forensic analysis of commingled plumes      
• Hydrogeologic investigation and geochemical characterization      
• Vapor intrusion investigations       
• Monitored natural attenuation evaluations