9 June 2002

project. They worked both immediately upstream and downstream of the area

being dredged by the Beachbuilder. They discharged at the head of Pass A

Loutre. No interference between the two operations was noted other than the

requested shift from Reach 1 on 6 June noted above.

9 June 2002

Dredging operations continued on 9 June. A malfunctioning sensor resulted

in main engine shutdown five times for a total downtime of 50 min during the

early morning hours. This problem was resolved by 1200 hr.

Additional downtime resulted from adding shore pipe (2 hr 25 min lost time)

and cleaning out pans clogged with clay (2 hr 5 min lost time). Day-to-day

hydrographic surveys showed that the channel bottom shifted rapidly, which

made accurate production rates hard to determine; therefore, it was determined

that the surveyed placement area volume would provide the most accurate

measure of dredge production. Total lost time for 9 June was 8 hr 30 min. The

sensor for the velocity meter malfunctioned and was replaced. The average cut

face ranged from 5 to 6 ft thick on 9 June 2002.

10 June 2002

On 10 June, the Beachbuilder continued dredging operations in Reach 2. In

the morning, the dredge was tracked into the RDB side toe of the channel

resulting in the plugging of the port side of the dustpan head with heavy clay.

After dark, the dredge operated on the RDB side of the channel to optimize safe

operating conditions. Downtime totaled 8 hr 40 min, including adding seven

lengths of shore line (3 hr 40 min), ship vessel traffic (1 hr 20 min), moving

anchors (55 min), cleaning clay out of pans (1 hr 20 min), and repositioning the

dredge eight times (50 min). Two deep-draft vessels passed abreast of the work

area at 1740 hr. The cut-face thickness ranged from 2 to 6 ft.

11 June 2002

On 11 June, the Beachbuilder continued dredging operations in Reach 2.

Shoaled areas across the channel width identified from surveys conducted on

10 June were dredged making short, parallel advances from the RDB side to the

LDB side across the areas. Cut-face thicknesses ranged from 4 to 10 ft. After

dark the dredge operated further on the RDB side of the channel to optimize safe

operating conditions. Total downtime during this day was 7 hr 20 min, which

included repositioning the dredge nine times (1 hr 50 min), adding shore pipe

(4 hr 15 min), and cleaning out a massive log from ladder pump (20 min). Two

deep-draft vessels passed abreast of the work area at 0530 hr.

Chapter 2

Project Description