# 252.236-7002 Obstruction of navigable waterways.
Type: Clause
Prescribed in: 236.570(b)
Current version date: DEC 1991

## Prescription and Applicability

### DFARS Prescription, 236.570(b)

(b) Use the following provisions and clauses in fixed-price construction contracts and solicitations as applicable -
(1) 252.236-7002, Obstruction of Navigable Waterways, when the contract will involve work near or on navigable waterways.
(2) When the head of the contracting activity has approved use of a separate bid item for mobilization and preparatory work, use either -
(i) 252.236-7003, Payment for Mobilization and Preparatory Work. Use this clause for major construction contracts that require - (A) Major or special items of plant and equipment; or (B) Large stockpiles of material which are in excess of the type, kind, and quantity which would be normal for a contractor qualified to undertake the work; or
(ii) 252.236-7004, Payment for Mobilization and Demobilization. Use this clause for contracts involving major mobilization expense, or plant equipment and material (other than the situations covered in paragraph (b)(2)(i) of this section) made necessary by the location or nature of the work. (A) Generally, allocate 60 percent of the lump sum price in paragraph (a) of the clause to the cost of mobilization. (B) Vary this percentage to reflect the circumstances of the particular contract, but in no event should mobilization exceed 80 percent of the payment item.
(3) 252.236-7005, Airfield Safety Precautions, when construction will be performed on or near airfields.
(4) 252.236-7006, Cost Limitation, if the solicitation's bid schedule contains one or more items subject to statutory cost limitations, and if a waiver has not been granted (FAR 36.205).
(5) 252.236-7007, Additive or Deductive Items, if the procedures in 236.213 are being used.
(6) 252.236-7008, Contract Prices - Bidding Schedule, if the contract will contain only unit prices for some items.

## Current Text

252.236-7002 Obstruction of navigable waterways.

As prescribed in 236.570(b)(1), use the following clause:

Obstruction of Navigable Waterways (DEC 1991)

(a) The Contractor shall—

(1) Promptly recover and remove any material, plant, machinery, or appliance which the contractor loses, dumps, throws overboard, sinks, or misplaces, and which, in the opinion of the Contracting Officer, may be dangerous to or obstruct navigation;

(2) Give immediate notice, with description and locations of any such obstructions, to the Contracting Officer; and

(3) When required by the Contracting Officer, mark or buoy such obstructions until the same are removed.

(b) The Contracting Officer may—

(1) Remove the obstructions by contract or otherwise should the Contractor refuse, neglect, or delay compliance with paragraph (a) of this clause; and

(2) Deduct the cost of removal from any monies due or to become due to the Contractor; or

(3) Recover the cost of removal under the Contractor's bond.

(c) The Contractor's liability for the removal of a vessel wrecked or sunk without fault or negligence is limited to that provided in sections 15, 19, and 20 of the River and Harbor Act of March 3, 1899 (33 U.S.C. 410 et seq. ).

(End of clause)

## Active Class Deviations Affecting This Clause

### Class Deviation 2026-O0019, DFARS RFO Implementation (Part 36)
- Status: Active
- Date Issued: 2026-02-01
- Change type: MODIFIED
- Action: Modified by RFO class deviation

## Suggested Questions

You can ask your AI assistant:
- Should I include this provision in my solicitation?
- Does this clause apply to commercial acquisitions?
- Does this clause apply to R&D contracts under Part 35?
- Which alternate should I use for a multiple-award contract?
- Are there any active Class Deviations that modify this clause?
- What changed in the most recent amendment?

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Source: https://part52.dev
Generated: 2026-04-21 17:40 UTC
Reference: https://www.ecfr.gov/current/title-48/section-252.236-7002