Caltha LLP Project SummaryProject: Phase 1 ESA For Former WWTP Site
Client: Prospective Buyer
Location(s): Minneapolis / Saint Paul, Minnesota Metropolitan Area
Key Elements: Phase 1 Site investigation, Tier I Vapor Encroachment Screening Assessment, ASTM E2600-10, Wastewater treatment facility
Overview: Caltha LLP conducted a Phase 1 Environmental Site Assessment for this property located in suburban Minneapolis / St Paul which was the historical location of a wastewater treatment plant (WWTP) and wastewater sludge management facilities. The property had been the site of a WWTP dating from 1965 through the 1980s. The WWTP and associated sludge handling facilities had been abandoned and demolished approximately 40 years ago. However, it was determined that some wastes and underground structures associated with the wastewater facility may have be disposed of or abandoned on-site.
The focus of the environmental assessment was to determine if wastes and abandoned structures remained on the property which could represent Recognized Environmental Conditions and potentially impact the future use of the property.
|Location of Wastewater Treatment Facilities Identified From Aerial Photos|
The Phase 1 environmental also included a Tier I Vapor Encroachment Screening Assessment conducted in accordance with ASTM Standard E2600-10. Numerous current and historic vapor sources were identified in the area. The screening assessment determined which, if any, could be a potential soil vapor encroachment risk for the property being assessed.
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