The U.S. Army Corps of Engineers, Philadelphia District, proposes to reissue the Delaware State Programmatic General Permit-20 (SPGP-20), authorizing certain existing and proposed piers, docks, mooring piles, boat lifts, breakwaters, and the replacement of existing serviceable bulkhead structures in navigable waters of the United States within the geographic boundaries of the Philadelphia District U.S. Army Corps of Engineers in the State of Delaware. The reissuance and extension of this General Permit is being coordinated with other interested Federal agencies, the State of Delaware and the general public. This General Permit, CENAP-OP-R-SPGP20, was previously reissued on January 2, 1990, reissued on January 2, 1995, reissued on January 2, 2000, reissued on January 25, 2004, reissued on December 31, 2009, modified on September 2, 2010, and reissued December 31, 2014. The current SPGP-20 expires on December 31, 2019. More details are available in the "Public Notice" and "Working Draft" attachments. Public comments are due by Sept. 13, 2019.