Client: US Fish and Wildlife Service
Location: San Juan Islands, Washington
Completion Year: 2015
Scope of Work:
- Historical document review
- Soil sampling and analysis
- Risk assessment
Brice performed a firm fixed price limited site assessment to evaluate for potential environmental concerns at Smith Island. Prior to field mobilization, Brice performed a file review to identify the areas of greatest potential concern as part of our sampling plan. Once onsite, we verified the sampling locations via visual observation.
Brice collected soil samples at the former paint shed, former ASTs, former USTs, generator building, and garages. We also performed sample identification and labeling; decontamination procedures to minimize cross contamination of equipment and samples; location control using a Trimble mapping grade GPS receiver; and handling of investigation-derived waste. All samples collected were analyzed for gasoline-, diesel-, and oil-range hydrocarbons.
Using the results of the limited soil sampling, we also performed a human health and ecological risk assessment. The results indicated the presence of diesel- and oil-range petroleum hydrocarbons in shallow soils. Other contaminants of concern were either not detected or were detected at concentrations less than the applicable MTCA screening levels. As part of our risk assessment, we provided USFWS with recommendations for possible follow up actions related to human health risk concerns.
The project was performed in accordance with all applicable OSHA, ADEC, and EPA regulations.