The experience and technical expertise of Terraphase engineers, geologists, and scientists qualifies us for a wide variety of projects. Our professionals have extensive experience in the following services:

Contaminated Soil and Groundwater Investigations

Multi-media chemical sampling and analysis, and chemical data quality
Drilling, excavating and sampling for geological, geotechnical and chemical characterization
Soil, water, and air sampling
Installation of groundwater monitoring wells networks

Soil and Groundwater Remediation

Hazardous and non-hazardous waste excavation, manifesting, transportation, storage, treatment and disposal
In situ soil and groundwater treatment, including direct injection, well injection, and soil stabilization
Ex situ treatment, including the design, installation, and operation of extraction systems
Design, operation and maintenance of groundwater treatment plants
Demolition and debris removal and disposal
Landfill operations and maintenance for closed landfills, including landfill gas sampling

Preparation of Superfund Documents

Remedial investigations and feasibility studies (RI/FS)
Records of Decision (RODs)

Geotechnical Engineering

Design of excavation supports
Design of equipment foundations
Slope stability analyses
Design of access trails and pedestrian bridges
Cap and liner design

Litigation Support Services

Preparation of expert reports
Remedial cost estimates
Preparation of declarations
Expert witness services

Regulatory Compliance

Agency interaction and negotiations
Stormwater and drinking water compliance programs in accordance with Clean Air and Water Act, Porter-Cologne, and NPDES requirements

Property Transfer and Environmental Due Dilligence

Phase I Environmental Site Assessments
Phase II Environmental Site Assessments

Terraphase Engineering Inc. Memberships

Contact supplier