Nationwide Permits (NWP) are blanket authorizations issued by the U.S. Army Corps of Engineers (ACOE) for projects that are determined to have a minimal impact on aquatic resources. These authorizations (50 in all) are issued at one time and expire on the same date (March 19, 2017 for the 2012 series). Certain activities require landowners to submit a pre-construction notice (PCN) to insure the activity complies with the issued NWP. If a PCN was required, regardless of the date your project received authorization ...