12 June 2002

12 June 2002

The Beachbuilder continued dredging operations in Reach 2 upstream of the

hard point on 12 June. The central section of the dustpan head was found to be

plugged with several logs when checked at 0730 hr. The logs were finally

extracted with a chain and hoist, and operations continued. Dredging was gen-

erally conducted in the RDB half of the channel with cut-face thicknesses rang-

ing from 2 to 8 ft. Operations were interrupted for anchor movement, addition of

shore line at the placement area, and vessel traffic passage. Downtime totaled

5 hr 30 min, including repositioning dredge nine times (1 hr 10 min), raising and

adding shore line (1 hr 35 min), and cleaning the clay and timber from two center

pans (2 hr 45 min).

13 June 2002

The last day of dredging operations was 13 June. The Beachbuilder worked

in Reach 2 upstream of the hard point. Cut-face thicknesses ranged from 5 to 9 ft.

Downtime for the day totaled 6 hr 15 min, including cleaning clay from pan

(2 hr), repositioning the dredge five times for a total of 50 min, time to un-snag

anchor wire from floating hose (1 hr 20 min), and vessel traffic (35 min). During

a late afternoon inspection of the placement area, USACE and OAS personnel

discovered several least tern and American avocet nests containing eggs. The

nests had been constructed some distance from the active placement point and

were not being disturbed. Dredging operations were terminated at 2100 hr on

13 June when the contract dredging period was completed.

Weeks Marine immediately initiated project demobilization. Anchors were

removed. The submerged line was recovered, and the shore line across the dike

and in the placement area was removed. The two marsh buggies initiated final

grading of the placement area. On 14 June, operations in the placement area were

terminated at the request of the MVN due to the numerous bird nests discovered

in the area. There was concern that the operations might destroy some of the

eggs.

The dike right-of-way area was regraded and the rock dike repaired. After-

dredging surveys of the work areas in the river channel and the placement area in

the marsh were conducted. All vessels, equipment, and personnel were demobi-

lized from the site.

Chapter 2

Project Description