This Class Justification and Approval (J&A) authorizes brand-name procurement of Schweitzer Engineering Laboratories (SEL) power system products for use across Walla Walla, Kansas, Omaha, Seattle, and... This Class Justification and Approval (J&A) authorizes brand-name procurement of Schweitzer Engineering Laboratories (SEL) power system products for use across Walla Walla, Kansas, Omaha, Seattle, and Portland District hydroelectric operating projects.