Caltha LLP Project Summary

Project: Cleanup Plan For Former WWTP Site
Prospective Buyer 
 Minneapolis / Saint Paul, Minnesota Metropolitan Area

Key Elements: Phase 2 Site investigation, GPRS, Ground Penetrating Radar, Wastewater treatment facility

Overview: Caltha LLP conducted a Phase 2 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 Phase II Investigation 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.

Historical photographs are useful in determining location of historical buildings on a property

Location of Wastewater Treatment Facilities Identified From Aerial Photos


The Response Action Plan focused on remediation of three areas on the site where site investigation identified impacts from the former WWTP.

Click here for more information on Caltha’s Environmental Assessment Services for commercial and industrial property transfer.

Caltha LLP | Your Environmental Site Assessment and Remediation Partner

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