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CX-011173: Categorical Exclusion Determination

Yaak Substation Transformer Replacement
CX(s) Applied: B4.6
Date: 09/18/2013
Location(s): Montana
Offices(s): Bonneville Power Administration

Bonneveille Power Administration is proposing to replace a transformer in its existing Yaak Substation electrical yard. The replacement would require that test pits be dug in order to determine the underlying soil geology/characteristics. Soil geology data would be used to determine if the existing transformer pad would need to be removed and upgraded, or if it could remain in place.