Austin Steger put Nelson ahead with a goal in the dying minutes for a 4-3 win.
Logan Styler's second of the game sent Castlegar home with a 5-4 win.
The association presented its early plans for the field to city council on Monday.
Greg Munch took it upon himself to rebuild a road and bridge after it was deactivated by the provincial government.
Nelson rallied with two goals in the third but fell 3-2 on the road in Castlegar.