UFC 3-560-01
6 December 2006
Including change 1, 7 December 2006
Table 3-4. Performing Excavations
1. Maintain 24 in (610 mm) from marks. If digging within 24 in (610 mm), expose
lines to verify.
2. Expose all major facilities within 5 ft (1.5 m) of work area.
3. If paralleling: expose to verify location and depth of facilities every 100 ft
(30.5 m).
4. Hand dig within 5 ft (1.5 m) of pedestals, risers, meters, flags, whiskers, etc.
5. Bore away from facilities.
6. Verify depth of any facilities boring across, change route or depth as required.
7. Do not place excavation dirt on locate marks, flags, whiskers, etc.
8. Support all lines exposed during excavation to avoid kinks or other damage.
Table 3-5. Backfilling
1. Prior to backfilling, contact facility owner to inspect exposed facility.
2. "Shade" all lines placed or exposed with good fill dirt.
3. Verify all fill dirt is free from rocks, cable trash, and large dirt clods.
4. No cable or personal trash may be backfilled into the trench.
Table 3-6. Damage During Backfilling of Trenching
1. If damage involves a potential risk of life, health or significant property damage,
call 911 or local emergency response number.
2. All damage, including kinking or sheath damage, must be reported immediately
to a supervisor and facility owner or operator.
3. Photograph the damage.
4. If a water line, other than a main, attempt to stop the damage.
5. If a gas or power line, evacuate the area, if necessary, and notify others working
in the area.
6. Complete damage investigation report.
3-3
NUMBER OF WORKERS REQUIRED. All work must be performed with a
sufficient number of workers to provide safe working conditions. 29 CFR 1910.269
(Electrical power generation, transmission, and distribution) requires more than one
worker where the hazard exposure of the work is considered to be significantly reduced
by the presence of additional workers. The following tables provide specific
requirements:
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