CPM Development & University Student Living
The 1.9-acre property is located on Washington Avenue SE in Minneapolis in a high-density urban area next to the University of Minnesota Twin Cities campus. The property has a long history of industrial uses including plating, machining and painting; a former filling station and repair garage with petroleum underground storage tanks; and a storage yard for a fuel company that included coal storage. In addition, the adjacent Gopher Oil Superfund site resulted in significant groundwater contamination beneath the property.
Landmark conducted a Phase I ESA, multiple soil, groundwater and soil vapor investigations across the property to delineate the contamination so that the Response Action Plan and Contingency Plan could be designed to cost-effectively clean up the property. Landmark also prepared pre-demolition surveys for the existing site buildings and oversaw the removal of hazardous materials and asbestos-containing materials prior to demolition. After all of the reports were approved by the MPCA, Landmark oversaw the environmental portions of construction which included air monitoring during earthwork activities, and soil management during the removal of approximately 43,000 tons of contaminated soil.
Because soil was substantially impacted at the water table interface, the MPCA required that the soil had to be removed prior to redevelopment; therefore, significant dewatering was necessary. Landmark designed an oil water separator and bag filter system, helped permit the discharge with the City and Metropolitan Council, and oversee the pretreatment system prior to discharging to the sanitary sewer. All environmental activities were approved by the MPCA, and Landmark completed cleanup grant applications that resulted in over $850,000 being awarded to the project.