EP 1130-2-520
29 Nov 96
(b) Survey contract specifications shall include requirements for electronic positioning
and depth finding equipment, a safe and suitable vessel meeting U. S. Coast Guard requirements,
and personnel staffing and qualifications.
b. Channel Sweep Surveys. Sweep surveys shall be performed as necessary to locate
underwater obstructions within the navigation channel limits or when dredging is performed in
hard material (e.g., dense clays, rock, or manmade materials). Equipment capable of detecting
obstructions will be used to ensure that the project is clear for navigation. Mechanical sweeps
may be used for all bottom conditions and shall consist of a drag capable of being moved for
complete coverage of the dredged area. Acoustic sweep systems (multiple transducers on booms
or interferometric, multi-beam swath/sweep transducer systems) may be used when appropriately
designed to provide accurate and full coverage of bottom conditions.
c. Channel Clearing. ER 1105-2-100 provides the policy and procedure to perform
emergency snagging and clearing work to benefit navigation, under authority of Section 3 of the
River and Harbor Act approved 2 March 1945. For routine maintenance, the project
authorization document provides the authority for snagging and clearing for navigation. ER
1130-2-520, Chapter 4, Removal of Wrecks and Other Obstructions provides the policy for
removal of wrecks and other obstructions to navigation.
8-8. Corps of Engineers Reserve Fleet. Procedures for assuring response of private industry
hopper dredges to support emergency and national defense dredging requirements are provided in
Appendix Z of this pamphlet.
a. The CERF program is used to augment the Corps Minimum Fleet hopper dredges, and
when it is not feasible or practical to use routine contractual procedures for hopper dredges.
b. All hopper dredging invitation for bids (IFB) shall contain the appropriate instructions
and/or clauses for the CERF.
c. The Contracting Officer (CO) for the district making the CERF request shall send a
request with justification concurrently to its commanding MSC and HQUSACE (CECW-OD). If
approved, the ordering CO will place an order against the Basic Ordering Agreement (BOA).
This will establish a contract with the owner of the CERF dredge. Progress payments will be
made in accordance with the terms of the BOA.
8-9. Corps of Engineers Minimum Dredge Fleet.
a. The Corps of Engineers Minimum Fleet vessels are national assets available at all times
to respond to emergency and national defense needs, both CONUS and OCONUS, as determined
and directed by the Chief of Engineers and/or the Director of Civil Works.
b. MSC commanders are responsible for ensuring that Minimum Fleet vessels are
maintained in a fully operational and ready state, sufficient to respond to emergency and national
defense needs both in CONUS and OCONUS, at all times.
c. MSC commanders will notify HQUSACE (CECW-OD) immediately of any and all
instances where a Minimum Fleet vessel is expected to be inoperable for more than 72 hours or is
involved in a reportable accident of any kind.
8-6
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