01-18-2018
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01-18-2018
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8 <br /> <br />approximately 3,000 acres of storage. Option 7B (which includes the area that is part of <br />Option 7A) shifts the alignment further north to the west of Interstate 29 and adds <br />approximately 5,200 acres. Option 7C shifts the alignment further north both west and east <br />of Interstate 29 and adds approximately 4,800 acres of storage. All three options reduce the <br />staging area elevation; shift more floodplain into North Dakota; and reduce the area <br />removed from the floodplain within the protected area. They also reduce the newly <br />impacted floodplain acreages in Richland County, North Dakota and Wilkin County, <br />Minnesota. Preliminary cost estimates associated with these options were also developed. <br />o The TAG did not recommend an Option for changing the dam/southern embankment alignment. <br /> <br /> <br />Issues Yet to be Resolved: <br /> <br />• Dam/Southern Embankment Location <br />o Due to time constraints, the TAG was not able to evaluate other potential <br />alignments other than 7A, 7B, and 7C. <br />o Shifting the alignment north of the proposed project alignment, similar to the <br />options presented by TAG, seemed to be acceptable to most Task Force members. <br />The exact alignment of the dam would still need to be determined. <br />• Amount of storage in North Dakota <br />o Increasing storage in North Dakota reduces the staging area elevations and reduces <br />new inundation impacts in Minnesota. The exact proportion of new and/or total <br />inundation impacts between North Dakota and Minnesota that would result in a <br />permittable project was not specified. It seemed that most Task Force members <br />were favorable to the reduced newly inundated acres in Richland and Wilkin <br />Counties as shown by TAG in the presented options, as well as the improved equity <br />of impacts between Minnesota and North Dakota. <br />• Project Permittability <br />o The TAG’s primary objective was to serve as a technical advisory group to the Task <br />Force, and therefore, TAG did not provide any recommendations on alignment. <br />o The TAG advised that 7A would likely not receive a Minnesota permit, but that 7B <br />and 7C, or a combination thereof, might be more permittable. <br />o Future permittability questions will be a discussion between the Diversion Authority <br />and both the Minnesota DNR and North Dakota SWC. <br />
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