Agenda - Council Work Session - 04/11/2023

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Important notes to figures: "Buildable Area" and estimated generating potential in MW — The yellow hatch pattern shown on the top ten site figures recognizes the buildable acres and approximate generating potential for the landfill cap and buffer areas. To identify the buildable area on the landfill cap, we used our GIS system to identify slopes greater than 15% and we subtracted these steeply sloped areas from total cap acreages reported by our GIS system. To identify the buildable area in the buffer we identified data sets for wetlands, open water, scientific and natural areas, forest (conifer, deciduous and mixed), and developed areas (low, medium, and high density). We identified the acreage for each of these natural and human -made features for each site, subtracted those acres from the total buffer acreage, and calculated the buildable acres for each buffer. To estimate the generating potential for each site, we divided each buildable area in acres by a capacity factor (4.81 acres per MW) to calculate the approximate generating potential in MW. Our capacity factor is calculated based on typical equipment specifications and a ground coverage ratio of 30%. The buildable area within the buffer appears fragmented and discontinuous at some of the sites. This is a function of the National Land Cover Database (NLCD) used to identify the specific natural and human made features that were subtracted from the total buffer area. The NLCD may occasionally misinterpret land cover and, due to time and scope constraints, we did not attempt to field verify land cover for each site. GIS data for GOB restricted parcels was provided by the MPCA. The restrictions attach to parcels identified in a real property declaration recorded with the associated county by the MPCA. The location of parcels with GOB restrictions should be verified by reviewing the declaration prior to contemplating development of non -GOB restricted parcels.