Wildwood Elementary School
Location: 8698 75th Street N., Grant
Nominated by: Mahtomedi Public Schools
In 2003, the Mahtomedi Public School District acquired a 70-acre parcel of land. The contaminated area involves approximately 30 acres of the eastern portion of the site. The property was originally agricultural land before the western 40 acres were turned into a mixed municipal/industrial waste dump, a demolition waste disposal area, and a waste transfer facility, operating from the 1950’s to the 1970’s. During its operation, the dump consisted of a burning pit and a series of trenches. Records indicate that in 1966 petroleum tank bottom sludge (impacted with polychlorinated biphenyls [PCBs] and lead) was spread on a portion of the dumpsite. The sludge reportedly covered an area of approximately one acre. In 1981, the property owner received a permit to open and operate a separate 2-acre demolition waste facility on the southwestern portion of the property. In addition to waste disposal, the property was also used as a transfer station for commercial and household wastes, tires, scrap metal, demolition debris, and composting yard wastes. The property was unused from the late 1980s to 2003. A wetland along the northern portion of the property has been restored and is a protected wetland area.
The property was placed on the EPA Comprehensive Environmental Response, Compensation and Liability Information System (CERCLIS), a list of potential Superfund sites that had not yet undergone sufficient characterization to prioritize them in the early 1990s, but the site was never placed on the Superfund list. In 1994, following completion of the Response Actions, the Property was delisted—one of the first sites in the nation to reach this regulatory milestone. EPA has since delisted thousands of sites from CERCLIS as a way to encourage the reuse and redevelopment of brownfield sites. The property is also listed on the MPCA’s Leaking Underground Storage Tank database. The School District entered the MPCA Voluntary Investigation and Cleanup (VIC) Program and the Voluntary Investigation and Cleanup (VPIC), now known as the Petroleum Brownfields (PB) Program in 2002 and is still listed on those databases. Soil on site was contaminated with petroleum, metals (lead, manganese, and cadmium), and diesel range organics (DRO).
Redevelopment included construction of a new 86,500 sq ft slab-on-grade two-story elementary school building — designed and built to LEED Silver specifications — with associated parking and other amenities, including improved surface water management. Wildwood Elementary School, serving 600 students, features classrooms filled with natural daylight, expanded engineering and science learning space, improved student safety throughout the building, improved indoor air quality, a flexible small group learning/resource area, a new computer lab, and expanded play areas. In addition, the School District proactively and voluntarily installed gas-vapor barrier and venting systems in the building.
$ 1,500,000 Total Remediation
$ 22,865,000 Total Redevelopment
Bonds funds following school referendum, funding from the MN Department of Education for “Health and Safety Projects”
- Minnesota Department of Education
- Minnesota Pollution Control Agency
- Minnesota DNR
- U.S. EPA
- Landmark Environmental
- City of Grant
- Rice Creed Watershed District
- Washington County
- Waste Management
- Johnson Controls Inc.
- Anderson-Johnson Associates Inc.
- LHB Corp.