Case study
When the Price Falls Faster Than the Cost
A negotiated dredging rate and a deeply discounted river contract expose two different procurement risks: unsupported production assumptions and the pricing of later work. The audits show where each decision needed stronger engineering and commercial scrutiny.
The basis of the offer
At Paradip, a dredging rate fell from INR 220 to INR 190.50 per cubic metre during negotiations. The estimated daily output used to support it rose from 12,000 to 14,000 cubic metres. Management said accepting the work could cover marginal cost while suitable assignments were scarce. India's auditor found no documented comparison supporting that explanation and criticised the production assumptions. The historical contract incurred substantial losses.[1]
A negotiated price can change in an afternoon. Soil conditions, pumping distance, vessel availability and the time required for a dredging cycle remain engineering constraints. A contractor accepting a lower price must explain how the work will cost less, or explicitly approve the additional commercial exposure.
That explanation belongs in the bid approval, before the equipment is committed.
What changed between the two estimates?
A price reduction can have a sound basis: a shorter mobilisation, a firm supplier discount, a better-suited vessel or a revised method supported by trials. Each change should appear in the cost model, with its supporting evidence and the person approving it.
An increase in assumed output needs particularly close attention. Effective production depends on the whole cycle: excavation, loading, transport or pumping, discharge, repositioning and the interruptions that the contract requires the contractor to absorb. A high instantaneous excavation rate can coexist with a poor daily delivery rate.
The estimate should identify the time basis. Working hours, vessel-days and elapsed calendar days answer different questions. A planning allowance for maintenance also needs to correspond to the actual plant and campaign, rather than a percentage carried forward from an unrelated job.
When the commercial team changes the price, the original estimate should remain visible. Management needs a comparison showing the resources removed, costs renegotiated and risks retained. Replacing the old spreadsheet with the approved bid erases the record of how the business accepted its exposure.
Idle equipment still needs a project decision
Taking work to keep a vessel employed can be commercially rational. The decision requires a comparison between the alternatives actually available to that business.
Some costs continue during idle periods. Others arise only after accepting a job: mobilisation, fuel, wear, support craft, project staff, disposal arrangements and demobilisation. An apparently positive contribution can disappear if the campaign occupies the vessel much longer than assumed or requires an unplanned repair.
The contractor should also examine the value of the capacity being committed. A short marginal-contribution assignment and a long campaign with an uncertain finish impose different restrictions on the fleet. The approval should state the expected duration, the downside case and the conditions that would trigger a management decision.
Those are company-specific commercial judgements. An industry price floor would conceal the differences between efficient fleets, locations and methods.
Savings have to survive additional work
Original work awarded 45% below estimate finished on time. The auditor later challenged the pricing of additional work, reporting approximately INR 31.4 million in excess payments across two phases. The department's explanation and the auditor's response are recorded separately.[2]
For an owner, the award discount is the opening position in the cost account. Additional scope can legitimately increase expenditure, but its quantity, method and pricing basis need their own record. Equipment already on site, repeated mobilisation charges and departures from original pricing conditions deserve explicit examination.
For a contractor, expected additions are a weak foundation for the original bid. The employer may change the programme, procure the work separately or decide that the proposed rate is unacceptable. Fund the contracted campaign from committed resources and keep prospective additions in a separate forecast.
A completion review compares the same scope on the same basis. It shows original work, additions, omissions and changes in conditions separately. This allows the owner to distinguish genuine procurement savings from a low opening price followed by expensive adjustments.
Test the source of a low price
World Bank guidance on abnormally low bids provides a structured sequence of identification, clarification, justification, verification and decision. It recognises that efficiency or favourable conditions can support a low price.[3]
For marine work, the technical review should reach the operating assumptions. Is the proposed plant available for the relevant window? Do transport and disposal arrangements support the stated cycle? Are essential subcontract quotations firm? Has the price allowed for the contract's measurement and standby provisions?
The owner's estimate needs the same discipline. Scope, survey dates, mobilisation, tax and risk allowances must be comparable. A large difference may reveal an inadequate bid, an outdated employer's estimate or a real efficiency advantage. The evaluation record should explain which conclusion the evidence supports.
Approve the cash requirement alongside the margin
Site expenditure follows the resource programme. Revenue passes through measurement, valuation, certification, the contractual payment period and receipt. Additional working time raises expenditure; delayed recognition or payment holds back cash.
A narrow margin leaves less capacity to absorb either change. The approval should therefore show the largest funding gap under the expected payment sequence and under a credible delay scenario. Unagreed changes and disputed claims belong in a separate schedule.
IMWO calls for a traceable cost revision whenever a material price concession is approved, and a funding decision whenever that concession changes the project's cash exposure. The remaining investigations follow the money through scope changes, measurement, payment, subcontracting and dispute resolution.
Subject index
Related subjects
These subject pages bring together related projects, technical articles, reports, and evidence methods.
Sources used
-
CAG Report 18 of 2025: Dredging Corporation of India
Comptroller and Auditor General of India, 2025
Printed pp.151-153 and 157-159; findings and management responses.
-
CAG Goa Report 4 of 2025
Comptroller and Auditor General of India, 2026-01-16
, [government tabling notice](https://www.pib.gov.in/PressReleasePage.aspx?PRID=2215331&lang=2®=48).
- Goa audit report tabled on 16 January 2026 Press Information Bureau, 2026-01-16
-
Abnormally Low Bids and Proposals: procurement guidance
World Bank, 2016
2016 edition, particularly printed pp.5-6 and 10-11.