The Reese Group recently completed a Phase II TBA for a vacant site in northern Wisconsin. The assessment was conducted in accordance with the ASTM International Standard E1903-97 Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process.
A network of temporary monitoring wells was installed to allow for the sampling and analysis of on-site soil and groundwater to define the nature and extent of contamination beneath the property. Based on records of historical operations and concerns raised by community members, field activities included the completion of a ground penetrating radar survey to assess the presence of underground storage tanks in a select area of the site. Utilizing a GSSI GPR with a 400 megahertz (MHz) antennae, the generation and interpretation of data was conducted in real-time. Sub-slab vapor sampling was conducted beneath the existing concrete foundation in order to characterize the degree and extent of contamination that could impact human health and the environment, and the potential risk to occupants within future structures on the site. Submittals included a Site-Specific Quality Assurance Project Plan (QAPP), Health and Safety Plan, and the final Phase II Environmental Site Assessment report.
Findings provided the client with a summary of site conditions and activities warranted to promote future redevelopment of the property and to qualify for additional resources.