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Page 26 Table 22. MDA- Hazardous Waste Generators Within One Mile of the Project Area Case File Name; ID Contaminant Investigation Type Investigation Status Federated Coops; CR-8982 Pesticides Emergency Closed; 6/8/2004 The U.S. Department of Transportation’s Office of Pipeline Safety has developed the National Pipeline Mapping System (NPMS), which shows active natural gas pipelines within the project area operated by Northern Natural Gas Company. The two high pressure pipelines have an associated 75-foot permanent easement with ten-foot temporary work space easements on both sides of the 75-foot easement that will be maintained. The permissible offset for structures is 35 feet from the pipelines or the edge of the easement, whichever comes first. The eight- and twelve-inch steel transmission pipelines have a maximum allowable operating pressure of 893 pounds per square inch gauge (psig) (8”; Pipeline ID: 179MNB67702) (12”; Pipeline ID: 179MNB67701) (29). Northern Natural Gas Company is currently working to refine the easement boundary to encompass the entire 95 feet. The Phase I Environmental Site Assessment (ESA) completed by Carlson McCain provides an assessment concerning environmental conditions and the historical uses and is included as Appendix H. The project area was formally used by a bus company (from at least 1977 through 2017). The onsite bus repair, maintenance, and fueling activities, particularly the bus maintenance garage, are considered a recognized environmental condition (RECs). The bus garage “has a maintenance pit with a drain, and the drain reportedly leads to a buried 55-gallon drum with holes in it that drains into the subsurface of the property. It is possible that over time, hazardous chemicals have entered the drain and are present in the subsurface of the site” (Appendix H). Likewise, the diesel and gasoline underground storage tanks (USTs) located on the former bus lot and the gasoline USTs located near the garage are considered RECs since it is “possible that residual petroleum contamination is present near the tanks” (Appendix H). The site has also operated as a farm since 1938. “The fertilizer storage area and pesticide storage, loading, and mixing area are considered RECs since it is possible that chemicals are present in the soils in these areas due to spillage over time” (Appendix H). The farmstead onsite has two surficial solid waste areas, which are also “considered a REC since it is possible that a release of hazardous chemicals and/or petroleum products has occurred in the area” (Appendix H). The Phase I ESA did not identify any Controlled Recognized Environmental Conditions (CRECs) or Historic Recognized Environmental Conditions (HRECs) within the site. Carlson McCain completed a Limited Phase II Investigation (dated January 2nd, 2025) to evaluate subsurface conditions of the RECs identified in the Phase I in addition to the Steve’s Oil Service site. Four borings were collected in mid-November 2024. Soil Analysis Total Kjeldahl Nitrogen (TKN), Nitrogen (as nitrate plus nitrite), and the pesticide Clopyralid, were detected but did not exceed the Minnesota Department of Agriculture’s (MDA) Soil