EST has performed soil gas survey services for a national environmental consulting and engineering company at various areas of concern in support of the Installation Restoration Program (IRP) at Edwards Air Force Base (AFB), California. The areas where EST performed soil gas survey services South Base Operable Unit, within the National Aeronautics and Space Administration/Ames-Dryden Flight Test (NASA) Facility, Operable Unit 6, within the Phillips Laboratory area, within the NASA Investigation Area and the Main Base Bulk Fuel Storage Facility, Operable Unit 8, and the Main Base Bulk Fuel Storage Facility, Operable Unit 8 located at Northwest Main Base. Environmental assessment activities and EST’s involvement with Edwards AFB project is ongoing.
All work performed at Edwards AFB was performed under biological concerns restrictions. The soil gas survey included the installation of over 500 soil gas probed at depths ranging from 2 to 10 feet below grade. Fieldwork was performed in Modified Level D personal protection equipment. Soil gas samples were analyzed on-site for selected halogenated and aromatic hydrocarbons, methane, and total petroleum hydrocarbons and jet fuel (JP4) using EST’s mobile environmental laboratories. Soil gas sampling and analyses were performed in accordance with DTSC/LARWQCB guidelines. The project was completed on time and within budget constraints.