7/18/2013 1:52:00 PM CapX Hampton substation work starts by Hwy. 52
by Ken Haggerty
Construction has begun on the CapX 2020 Hampton Substation on a 15 acre parcel of farmland near the northwest intersection of Hwy. 52 and 215th Street, about two miles north of Hampton.
Dahn Construction, headed by rural Cannon Falls resident Keith Dahn, is the contractor on the Hampton substation. They do much of this type of grading and excavation work for Xcel in the area.
The estimated $10 million substation will have several 345 kV connections. The actual footprint of the substation will not use up the fifteen acre parcel.
The new substation will serve as the easterly endpoint for the recently started CapX Brookings, SD to Hampton 345 kV high voltage transmission line which is expected to be completed early in 2014. Area right-of-way clearing for this line segment will start this summer and go into the Fall. Work on the line has already started east of New Prague and is moving eastward.
The Hampton substation will also serve as the northern end point of the CapX Hampton-Rochester-LaCrosse line. Crews are already working on a new substation in the Pine Island area near Hwy. 52 for this segment and will head into Rochester and toward Alma, WI with new lines. That line will head toward Hampton from Pine Island in 2015. Preliminary easement acquisition, survey and acquisition work is under way for the Pine Island to Hampton segment.
The Hampton substation will also connect to the existing 345 kV line located on the east side of Hwy. 52 near 215th St. This connection is scheduled for February, 2014 This existing line runs from the Prairie Island nuclear plant to the Shakopee area. It serves as CapX's connection to the existing high voltage transmission grid that rings the Twin Cities.
Four feet of frost susceptible soils are being removed at the Hampton substation site and will be replaced with three feet of sand and one foot of class five gravel. "This is to make sure we have a stable pad for the substation equipment," said Grant Stevenson, CapX2020 Senior Project Manager. "It's all based on the soil types in the area. For comparison, a CapX substation being constructed in the LaCrosse area requires no soil removal - just moving soil around on the site and the addition of the gravel. It is sandy soil that isn't susceptible to freezing."