With extensive experience in both the private and public sector, our Engineering and Environmental Sciences (EES) team understand that every site is unique, requiring its own approach and solutions. Our staff is comprised of a diverse set of engineers, geologists, and environmental scientists, all with environmental-related degrees, nearly half with advanced degrees, and a cumulative excess of over 100 years of environmental experience. This diversity is what sets us apart. By using a collaborative approach, we’re able to quickly decipher what is necessary from all angles and plan a course of action to a rapid solution.


Annual Environmental Audits (AEA)
Contaminant Fate and Transport Modeling
EIR Documentation Support
Environmental Document Review
Environmental Transaction Screens
Facility Decommissioning Oversight
GIS Mapping
Hazardous and Non-Hazardous Waste Characterization
Human Health Risk Assessment
Landfill Gas Testing and Annual Reporting
Methane Surveys and Methane Mitigation Design Services
NEPA / CEQA Support
Phase I Environmental Site Assessment
Phase II Site Investigation
Post-Remediation Confirmatory Sampling
Public Outreach / Community Relations
Regulatory Communication and Reporting
Regulatory Negotiations
Regulatory Record Search and Review
Soil Characterization and Removal under AQMD Rules 1166 and 1466
Soil, Soil Vapor and Groundwater Investigations/Monitoring
Soil and Groundwater Remediation Systems – Design and Implementation
SWPPP – Stormwater Pollution Prevention Planning
Underground Storage Tank Permitting and Removal


Mark Drollinger


Principal, Engineering & Environmental Sciences

Greg S. McIver

Principal Scientist, Engineering & Environmental Sciences

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