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www.RiceCreekCommons.com/MasterDeveloper 11 Existing conditions Redevelopment of RCC requires acute awareness and expertise in addressing the constraints associated with the site’s industrial past. Elements of the site that impact development include: • On-site treatment of contaminated groundwater will continue for several decades. The U.S. Army controls this groundwater treatment system (known as the TGRS). The County is rerouting and upgrading some of the TGRS piping. The treatment facility will need to remain in place, but can be screened and integrated into a public space. Pump house stations along the perimeter of the site will also need to remain in place. The treated water from TGRS system is an opportunity for energy resiliency as a heating/cooling source as described in the Energy Integration Resiliency Framework document on the RCC website. • Although the soil has been remediated to residential standards, depending upon Minnesota Pollution Control Agency (MPCA) standards, areas of the site may require passive or active building venting systems to mitigate any potential vapor issues from shallow groundwater. MPCA standards have evolved over the past several years. Exact standards may not be known until a specific development site plan is presented to the MPCA. • The storm water management for a large portion of the site will be provided in the natural resources corridor. Additional storm water ponds will need to be constructed on private land when development occurs. • Shallow groundwater exists in portions of the site. A preliminary mass grading plan has been developed to help minimize the impact of the shallow groundwater on the low portions of the site. • Land to the east of RCC is owned by the federal government and operated by the Minnesota National Guard (MNG). Portions of MNG land have been used for low- intensity training adjacent to residential neighborhoods for many decades. • Existing Xcel Energy power lines will need to be relocated.