Environment
SITE INVESTIGATION
Our team designs and delivers efficient, science-based, multimedia environmental investigations that provide the data needed to answer the important questions and develop the right solutions. We are targeted, on point, and strategic. The result is remedial strategies that are protective, sustainable, and cost‑effective.
Site Characterization | Remedial Investigation | Feasibility Study | Risk Assessment | Conceptual Site Models | Water, Soil, Sediment, Stormwater, Air | Biological Assessment | Fate and Transport | Modeling | Data Quality Objectives | Sources | Pathways
REGULATORY COMPLIANCE
We know that complying with environmental, health, and safety regulations is a priority for our clients. So is meeting business objectives. That’s why we consider both when building compliance strategies. Within this framework, our scientists and engineers bring to bear the relevant technical factors to develop robust programs to meet a range of federal, state, and local regulatory standards.
CERCLA | RCRA | TSCA | NPDES | Proposition 65 | NEPA | CEQA | TMDL | MS4 | Stormwater
EMERGING CONTAMINANTS
We help our clients navigate the world of emerging contaminants and build effective management strategies within this ever-changing landscape. Our seasoned multidisciplinary EC team combines in-depth technical knowledge with a comprehensive understanding of regulatory and stakeholder priorities. Our experience and insight help our clients respond to the range of health, environmental, engineering, and business challenges posed by emerging contaminants.
PFAS | Assessment | Management | Toxicology | Risk Assessment | Risk Communication | Treatment | Litigation Support | Product Stewardship | 1,2,3-Trichloropropane | 1,4-Dioxane
CONTAMINATED SEDIMENT
We offer comprehensive sediment management services to help our clients evaluate and remediate contaminated sediment sites; plan navigation dredging projects; and manage sediments in lakes, rivers, estuaries, and impoundments. Our services are fully integrated with our risk assessment, engineering, remediation, modeling, restoration, and natural resources capabilities. The result is sustainable, environmentally sound, and cost‑effective solutions.
Sediment | Site Characterization | Source Identification | Dredging | Dredged Material Evaluation | Risk Assessment | Remediation | Porewater | Modeling | Sediment Profile Imaging
FATE and TRANSPORT
We apply quantitative analyses and models to resolve key questions about the magnitude, sources, fate, and transport of organic and inorganic chemicals in the environment. Developing robust conceptual site models that describe the physical, chemical, and biological processes governing chemical behavior and fate is the framework of our approach. The results lead to more effective site investigations, remediation strategies, and identification of chemical sources.
Modeling | Groundwater | Water Quality | Air | Hydrodynamics | Sediment Transport Remediation | Source Identification | Forensics | Allocation
Monitoring Technologies
We get it. You have questions. You need data to answer them. And those data need to be reliable, robust, and acquired efficiently. Our team excels at designing and implementing monitoring programs that utilize the right combination of technologies to meet your needs. We have decades of experience in properly and safely implementing these technologies and then evaluating the results to achieve solutions that work.
ADCP | OPTICS | SEDflume | Sediment Profile Imaging | Acoustics | Remote Sensing | Aerial Drones | Multi-parameter Water Quality Sonde | Spotter | Drifter | Laser Particle Sizer | Real-Time Systems
Sediment / Dredged Material Management
We provide comprehensive support for sediment quality studies and dredged material evaluations in marine and freshwater systems. Our team designs and executes sampling programs, interprets complex data, and delivers defensible reporting to support regulatory compliance and disposal planning. From ports to open-ocean sites, we assess material suitability for disposal/reuses like beach nourishment, habitat restoration, confined aquatic disposal, and offshore placement—balancing environmental protection with project efficiency.
Sediment Quality | Dredged Material Testing | Disposal Suitability | Regulatory Support | Habitat Restoration | Core Sampling
Vibracoring
Our custom-designed vibracore systems collect continuous sediment cores up to 40 feet in length across diverse environments—from shallow wetlands to deep offshore waters. These systems operate in challenging conditions and are deployed from barges, vessels, skiffs, and land-based platforms. Vibracoring is ideal for both geotechnical and environmental investigations, offering high-quality samples from unconsolidated soils and sediments. Our proprietary equipment and experienced field teams ensure reliable performance across a broad geographic range.
Sediment Coring | Geotechnical Sampling | Marine Sediments | Custom Platforms | Core Recovery and Retention | Deep-Water Deployment
Water Quality Studies
We deliver innovative water quality monitoring and analysis to support stormwater, wastewater, and industrial discharge compliance. From best management practice (BMP) effectiveness evaluations to ultra-low pollutant detection, our methods are precise, practical, and permit-driven. Services include automated, telemetered sampling systems and flow-weighted monitoring across diverse marine and freshwater environments. Our programs support accurate pollutant load estimation, total maximum daily load compliance, and performance tracking of treatment systems across California and beyond.
Stormwater Monitoring | BMP Effectiveness | Pollutant Load Estimation | Automated Sampling | NPDES Compliance | Marine and Freshwater Systems
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