Terraphase provides on-call environmental compliance services to the Port of Oakland (Port) in California, supporting a wide range of infrastructure, airport, and property-related environmental programs. Our team works closely with Port staff and regulatory agencies to manage risk, ensure regulatory compliance, and implement effective environmental strategies across Port-owned properties and facilities.
Scope of Services
Terraphase services encompass stormwater management, National Pollutant Discharge Elimination System (NPDES) permit compliance, and water quality treatment design, along with drainage infrastructure evaluation and environmental site characterization. Our team developed and implemented the Oakland International Airport stormwater compliance program including preparing the airport-wide Stormwater Pollution Prevention Plan (SWPPP), performing Qualified Industrial Stormwater Practitioner (QISP) inspections and sampling, preparing the site stabilization plan, designing best management practices (BMP) under the Industrial General Permit (IGP), and training airport tenants.
Terraphase also assists the Port with property transaction due diligence, site investigations, and remedial planning, and provides ongoing support for regulatory engagement and compliance documentation. Our team implemented erosion and sediment control practices, performed vapor monitoring for methane, and collected soil, groundwater, and stormwater samples.
Notable Accomplishments
- Prepared recommendations for investigation of, upgrades to, and maintenance of stormwater treatment bioswales and retention areas at Oakland International Airport South Field
- Prepared Geographic Information System (GIS) maps of Port post-construction BMPs implemented to meet Municipal Separate Storm Sewer System (MS4) Permit requirements
- Installed vapor monitoring wells and performed methane monitoring at two Port-owned properties
- Developed closure strategies and completed comprehensive review of historical documents and evaluation of site conditions relevant to low-threat closure, including free product gauging at groundwater monitoring wells
