Amendment Details - The original notice is being revised. The revised dates and details are indicated in bold underline. Deletions are shown in strikethrough. 

1. To Whom It May Concern: Notice is given that on July 10, 2024the during the week of July 8, 2024, the U.S. Army Corps of Engineer's Contractor will begin the controlled demolition and subsequent removal of the dam at Monongahela River Locks and Dam 3 (LD3, Elizabeth). These dates are This date is subject to change.

2. The controlled demolition will involve the use of explosives, which will restrict navigation activities in the vicinity of Locks and Dam 3.

3.  Preparatory work will begin in advance of this date, but the actual demolition will not begin until the week of July 8, 2024. Preparatory work occurring before July 10, 2024, does not impact the usage of the lock.

4. Preparatory work will include but not be limited to:

      a.      Installing aids to navigation to notify river users of the restricted areas around the dam and that the use of the lock is required. Aids to navigation - these are currently being installed and are intended to notify river users of the restricted areas around the dam and the status of the lock (opened or closed).

      b.      The Braddock pool elevation will be raised to elevation 724.7 to facilitate the dam demolition and removal.

      c.      Drilling into the dam to prepare for the actual explosive charges.

5. Following the initial demolition and breeching of the dam, navigation through LD3 will be prohibited for an estimated period of 3 to 12 days, depending on river conditions.

6. Following the 3-12 day closure at Locks and Dam 3:

      a.      To reduce the risk of injury, death, and/or significant property damage, all river traffic will be required to use the lock until the dam is completely removed and the Corps of Engineers removes the restricted areas from the river. That is expected to occur in December 2024.

      b.     It is expected that there will be weekly, short-term (less than 3 hours) navigation closures of Locks and Dam 3 while additional sections of the dam undergo controlled demolition.

7. Additional navigation notices will be distributed as the date of the demolition draws nearer and may contain revised information.  if the date of this scheduled demolition changes.