Client: US Coast Guard
Location: San Diego, CA
Completion Year: 2020
Scope of Work:
- Site Investigation
- Removal Action
Brice was awarded a contract to conduct a soil delineation and support the removal action at the US Coast Guard (USCG) Point Loma Light Station in San Diego, CA. As part of the lighthouse restoration project, the USCG had determined that the near-surface soil surrounding the Point Loma Light Station, fog signal building, and USCG residential housing had elevated levels of lead from historic use of lead-based paint.
To delineate the soils, Brice collected discrete soil samples from depths of 0 to 2 feet bgs for laboratory analysis. We also collected analytical samples. Analytical results indicated lead-impacted soils greater than 200 mg/kg were present within 15 feet of the structures and within 2 feet of the surface. Brice characterized the contaminated soil as non-RCRA hazardous waste, California RCRA-waste, and RCRA hazardous waste. Brice also performed a topographic survey and provided drawings to the USCG to include in contractor bid specifications for the removal action.
In support of the soil removal action which was performed by others, Brice performed dust monitoring, surveyed the excavation limits and sample locations, and field screened the excavation in situ. Confirmation samples were collected and analyzed with 24-hour turnaround time. Approximately 604 tons of California RCRA-waste lead-impacted soil above the PAL from the site. However, some lead-impacted sub-surface soils greater than the PAL remain in inaccessible areas (adjacent to and beneath structures or utilities).
Because the site is part of the Cabrillo National Monument, Brice also provided archeological monitoring. No significant historic or prehistoric archaeological materials were inadvertently discovered or impacted.
To minimize the temporary displacement of USCG families residing in two residential houses at the light station, Brice worked through a weekend to expedite the project schedule.
- Completed the project on time and on budget and no safety incidents
- Commended by Contracting Specialist, Samantha C. Watts: “Working with you and your team this year to execute critical USCG projects despite the challenges of the Coronavirus epidemic was one of the most rewarding highlights of my year. Thank you for your awesome partnership, your creativity and for delivering stellar results again and again!”