WALLA WALLA, Wash. – The U.S. Army Corps of Engineers (USACE) Walla Walla District today announced it will close its Regulatory offices due to the absence of available federal funding. Regulatory offices will be unable to evaluate individual permit applications, pre-construction notifications (PCNs) for nationwide permit (NWP) or regional general permit authorizations, or requests for jurisdictional determinations until after current year funding is received and the offices reopen.