shall be on-site and reviewed for additional safety precautions or
requirements that are sometimes not identified by OSHA or USACE EM
385-1-1. Such additional safety precautions or requirements shall be
incorporated into the AHAs.
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NOTE: Include the following item in OICC Marianas
projects only.
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[
c.
A Machinery & Mechanized Equipment Certification Form shall be
submitted for acceptance by the Contracting Officer prior to being
placed into use. A copy of the certification form will be provided
during the Pre-construction Conference.]
3.7
The competent person shall perform soil classification in accordance with
29 CFR 1926.
3.7.1
Utility Locations
Prior to digging, the appropriate digging permit must be obtained. All
underground utilities in the work area must be positively identified by a
private utility locating service in addition to any station locating
service and coordinated with the station utility department. Any markings
made during the utility investigation must be maintained throughout the
contract.
3.7.2
Utility Location Verification
The Contractor must physically verify underground utility locations by hand
digging using wood or fiberglass handled tools when any adjacent
construction work is expected to come within three feet of the underground
system. Digging within 0.061 m (2 feet) of a known utility must not be
performed by means of mechanical equipment; hand digging shall be used. If
construction is parallel to an existing utility the utility shall be
exposed by hand digging every 30.5 m (100 feet) if parallel within 1.5 m (5
feet) of the excavation.
3.7.3
Shoring Systems
Trench and shoring systems must be identified in the accepted safety plan
and AHA. Manufacture tabulated data and specifications or registered
engineer tabulated data for shoring or benching systems shall be readily
available on-site for review. Job-made shoring or shielding shall have the
registered professional engineer stamp, specifications, and tabulated data.
Extreme care must be used when excavating near direct burial electric
underground cables.
3.7.4
Trenching Machinery
Trenching machines with digging chain drives shall be operated only when
the spotters/laborers are in plain view of the operator. Operator and
spotters/laborers shall be provided training on the hazards of the digging
chain drives with emphasis on the distance that needs to be maintained when
the digging chain is operating. Documentation of the training shall be kept
on file at the project site.
SECTION 01525
Page 27
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