Bellevue to Eddystone Deepening work (Per GLDD):
Please see the attached work plan for the Dredge 55 and Apache working 03/04/2019 to 03/05/2019 in the Delaware River.

DREDGE 55
The Dredge 55 is working in the lower Marcus Hook Range just inbound of the Drillboat Apache. The tug Captain Dann will be tending the Dredge 55 on Channel 07.

DRILLBOAT APACHE
Drilling and blasting operations are continuing on the green side of the lower Marcus Hook Range today. The Apache will have two blasts today. After the second blast, the Apache will spud down outside the channel just south of the Commodore Barry Bridge for the night. Tuesday morning the Apache will return to work in the upper Bellevue Range. There is one scheduled blast for tomorrow.

The channel will be closed from 15 minutes prior to blast until the all clear. The tug Bering Dawn will be tending the Apache on Channel 88A. Additional support vessels include Gannett, SeaMe (Security) and Integrity (biological monitoring).

Note:
- The APACHE is NOT able to relocate for traffic. During blasting operations, there will be a temporary channel closure, all traffic will receive notification of blasting operations on VHF 13 & 16.
- The GREEN side of the channel is closed in the vicinity of the Apache for traffic while dredging and blasting operations are being performed. In the process of dredging / blasting, rocks may be overturned creating shoal areas which are a hazard to navigation.

VHF notification calls will be made as follows:
2hr pre-blast notification on 13 & 16
1hr pre-blast notification on 13 & 16
30min pre-blast notification on 13 & 16
15min pre-blast notification on 13 & 16 – full channel will be shut down (1,500ft radius of blast zone)
5 min pre-blast notification on 13 & 16 – full channel remains closed (1,500ft radius of blast zone)
1 min pre-blast notification on 13 & 16 – full channel remains closed (1,500ft radius of blast zone)
Blast count down 10 to 1 on 13 & 16 – full channel remains closed (1,500ft radius of blast zone)
All clear call from Apache on 13 & 16 – channel navigation can resume*
*in areas where blasting occurs near centerline, channel closure will remain until survey verifies there is no hazard to navigation – notification of any obstructions will be given before re-opening of the channel. This review process could take up to an hour after centerline shots. These areas will be identified in the daily notifications to give advance warning. Normal channel closures for blasting not requiring survey typically last 30 minutes.

Operations are also monitoring radio channels 13 and 16. Support vessel Columbia River will also be conducting hydrographic surveys around operations. Should any changes occur, a revision of notice will be distributed.