Location
Canada / Americas
Project record
Port de Grave marginal wharf reconstruction
Maher's Contracting Limited received contract F6140-210731/001/PWD from Public Services and Procurement Canada for Fisheries and Oceans Canada's Port de Grave marginal-wharf reconstruction on 15 November 2021. The official package combined removal of the existing wharf with a new treated-timber crib marginal wharf, reinforced-concrete deck and slab, harbour dredging and cribseat excavation including rock removal if required, scour protection, drainage, water, electrical and waste-oil-tank relocation. The CAD 1,547,256 initial CanadaBuys award reached a CAD 1,763,368 cumulative contract after amendments. The 2022-23 Public Accounts separately report CAD 1,533,364 as both amount contracted and expenditure to date and apply the federal completed-contract marker.
Segment
Fishing harbour wharf, dredging and shore protection
Status
Maher's Contracting received F6140-210731/001/PWD on 15 November 2021; CanadaBuys records a CAD 1,763,368 cumulative contract after amendments, and the 2022-23 Public Accounts mark the Port de Grave contract completed / Confirmed
Last checked
13 August 2026
Coverage
Related sectors
Fishing harbour wharf, dredging and shore protection is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.
Subject index
Related subjects
These subject pages bring together related projects, technical articles, reports, and evidence methods.
Project anatomy
Contract scope and delivery roles
- Client / authority
- Fisheries and Oceans Canada - Small Craft Harbours, procured through Public Services and Procurement Canada
- Delivery parties
- Maher's Contracting Limited - construction prime under F6140-210731/001/PWD, Dredging, blasting, timber, concrete, electrical, survey, testing, marine-plant and material-supply lower tiers - not named in the cited public records
- Contract route
- PSPC published F6140-210731/A under the Canadian Free Trade Agreement as an open, lowest-price construction competition for DFO. The tender ran from 27 September to 26 October 2021 and carried a CAD 1 million to CAD 5 million estimate range. CanadaBuys records award to Maher's on 15 November 2021, followed by amendment 001 on 9 November 2022 and amendment 003 on 19 January 2023; amendment 002 carries the cumulative value dated 14 December 2022.
- Execution window
- Bidders were required to complete the work within 50 weeks after award. CanadaBuys records expiry moving to 16 December 2022 and then 31 December 2022. Public Accounts for the fiscal year ended 31 March 2023 applies note f, defined by the Receiver General as contract completed; no cited record gives the exact substantial-completion, owner-acceptance or harbour-reopening date.
- Works package
- The contract covers complete demolition and disposal of the existing marginal wharf; removal and reinstatement of asphalt and services; a new treated-timber crib marginal wharf with reinforced-concrete deck and slab-on-grade; crib scribing to bedrock or rock mattress where required; rock scour protection; cribseat excavation and harbour dredging including rock removal if required; rock fill, granulars and asphalt; light poles and protection bollards; catch basins and storm sewer; relocation of the waste-oil tank; new water and electrical trenches; and an electrical shed and site upgrades. The mooring specification requires 225-kilogram Type A cleats on reinforced-concrete pedestals.
- Marine interfaces
- The package joins wharf demolition, dredging and cribseat preparation inside an operating fishing harbour. The dredging specification separates Class A rock from Class B material, requires a licensed explosives specialist for blasting, navigation marking for floating equipment, controlled disposal and PSPC survey verification before an area is accepted as cleared. Timber cribs, rock mattress, concrete deck, scour protection, service reinstatement and harbour access therefore share one constrained marine workfront.
- Commercial evidence boundary
- CanadaBuys reports a CAD 1,547,256 initial award, a CAD 32,768 amendment on 9 November 2022, a CAD 1,763,368 cumulative total on 14 December 2022 and a CAD 183,344 amendment dated 19 January 2023. The two stated amendment values reconcile exactly to the cumulative total. Public Accounts report CAD 1,533,364 as amount contracted and expenditure to date, with note f for contract completed. CAD 1,533,364 multiplied by 1.15 rounds to CAD 1,763,369, one dollar above the CanadaBuys total; this is consistent with HST and ledger rounding, not proof of the tax basis printed by either source.
Contract and delivery chain
Named roles and open packages
Named appointments are shown against the workstream they cover. Unallocated packages remain open until a project source identifies the responsible party.
Construction prime
F6140-210731/001/PWD
- Named party
- Maher's Contracting Limited
- Status
- Confirmed
- Source position
- CanadaBuys records the 15 November 2021 award, initial CAD 1,547,256 value and lowest-price procedure. Source
Wharf and dredging scope
Marginal wharf, dredging, cribseat, utilities and site works
- Named party
- DFO, PSPC and Maher's Contracting
- Status
- Confirmed
- Source position
- The official bid package fixes the 50-week term, timber-crib and concrete configuration, dredging controls, utility scope and detailed construction drawings. Source
Contract amendments
Amendments 001 to 003
- Named party
- PSPC and Maher's Contracting
- Status
- Confirmed
- Source position
- CanadaBuys records CAD 32,768 and CAD 183,344 amendment values and a CAD 1,763,368 cumulative contract total. Source
Completion and expenditure
Federal Public Accounts ledger
- Named party
- Fisheries and Oceans Canada and Maher's Contracting
- Status
- Confirmed
- Source position
- The 2022-23 Public Accounts list CAD 1,533,364 as amount contracted and expenditure to date and apply note f, defined as contract completed. Source
Lower-tier supply chain
Dredging, blasting, timber, concrete, electrical, survey and marine plant
- Named party
- Undisclosed subcontractors and suppliers
- Status
- Undisclosed
- Source position
- The reviewed official records identify the prime and work packages but no named lower tiers.
Project timeline
Material developments
Dated events that changed scope, counterparties, delivery, commissioning or operating status.
Open this project in the Change LogPublic Accounts marked the Port de Grave contract completed
The federal ledger closes the contract-status gap and reports CAD 1,533,364 expenditure to date against the same amount-contracted field.
SourceAmendment 003 recorded CAD 183,344
The published amendment completes the arithmetic from the initial award and amendment 001 to the CAD 1,763,368 cumulative contract total; its work scope is not disclosed.
SourceAmendment 001 added CAD 32,768
The first monetary amendment changed the contract value and extended the published expiry to 16 December 2022 without a public change description.
SourceMaher's received the integrated reconstruction award
The award placed wharf demolition, timber-crib reconstruction, concrete deck, dredging, scour protection, drainage and utilities under Maher's as the integrated prime.
SourceEvidence gap
What remains unverified
Outstanding evidence
- Completion and owner acceptance certificates
- Accepted dredging and cribseat-excavation quantities
- Final bathymetry and PSPC cleared-area survey
- As-built timber-crib, concrete-deck and utility records
- Harbour reopening and defects closeout
- Reasons for amendments 001 and 003
- Named dredging, blasting, timber, concrete and electrical lower tiers
- Final commercial reconciliation
Sources and related records
Read featured analysis Methodology Submit a correction Project tracker
Source collections
Project sources 7
- F6140-210731/A Port de Grave tender notice CanadaBuys / Government of Canada, Published 27 September 2021; closed 26 October 2021
- F6140-210731/001/PWD award notice CanadaBuys / Government of Canada, Awarded 15 November 2021; published 16 November 2021
- F6140-210731/001/PWD amendment 001 CanadaBuys / Government of Canada, 9 November 2022
- F6140-210731/001/PWD cumulative contract history CanadaBuys / Government of Canada, 14 December 2022
- F6140-210731/001/PWD amendment 003 CanadaBuys / Government of Canada, 19 January 2023
- F6140-210731 official specifications and drawings Fisheries and Oceans Canada / PSPC via CanadaBuys, Project issue June 2021; published 27 September 2021
- Public Accounts of Canada 2022-23, Volume III Section 4 Receiver General for Canada / PSPC, Fiscal year ended 31 March 2023