Terraphase conducted a Phase I Environmental Site Assessment (ESA) for a major high school campus modernization project for a high school in Northern California. The site had a history of mixed commercial and industrial use, including a laundry, nursery, rifle range, and fuel tanks, and was known to have solvent-impacted groundwater.
Scope of Services
As part of performing the Phase I ESA in accordance with ASTM E1527-21, Terraphase also prepared a Department of Toxic Substance Control (DTSC) Supplemental Evaluation for additional potential sources of site impacts, including but not limited to mines, lead-based paint, asbestos-containing materials, naturally occurring asbestos, hydrogen sulfide, radon, Polychlorinated Biphenyls (PCBs), fill material, and illegal drug manufacturing. The assessment was coordinated to support planned seismic, utility, and facility upgrades throughout the campus.
Notable Accomplishments
- Supported environmental due diligence for school modernization project
- Identified solvents in groundwater, former on-site laundry, historical uses of concern, stockpiled soil of unknown origin, and former on-site heating oil tank with a known release as recognized environmental conditions (RECs)
