Mechanical Rough-in — DND Training Facility Renovation
Sample 2 of 3 · NAICS 236220 · Federal construction · Team-tier output
Executive Summary
Maple Trade Builders Co. — a 12-person mechanical contracting firm based in Pembroke, Ontario — submits this proposal for the mechanical rough-in scope of the CFB Petawawa training facility renovation, covering HVAC trunk distribution, plumbing rough-in for the new wash-up and locker areas, and natural-gas service to the relocated boiler plant.
We are 38 km from the site and have completed three previous projects on the base in the last 24 months, two for DND directly and one as a subcontractor to a prime construction contractor. Our project lead is a Red Seal mechanical journeyperson with 18 years of HVAC experience; our gasfitter holds Class A certification through the Ontario Technical Standards and Safety Authority.
Our base bid of $378,400 CAD includes all materials, labour, equipment, supervision, and contractor overhead through substantial completion. We propose a 9-week schedule from notice-to-proceed.
Mandatory Criteria
Maple Trade Builders Co., Ontario corporation, registered 2017. Business number [BN]. WSIB Clearance Certificate # [Cert] valid through 2026-08-15. Active CRA Procurement Business Number.
- Mechanical lead — Red Seal Steamfitter/Pipefitter (interprovincial), Ontario Certificate of Qualification # [#####]
- Gasfitter — Class A (TSSA Ontario), # [#####]
- Refrigeration mechanic — Red Seal, # [#####]
- HVAC technician — 313A Ontario journeyperson, # [#####]
All certifications are current and verifiable through TSSA / Ministry of Labour public registers.
Mandatory pre-bid site meeting attended by project lead [name] on [date]. Sign-in sheet copy attached as Annex A.
Commercial General Liability ($5M aggregate, $5M per occurrence), Auto Liability ($2M), Builder's Risk via prime contractor when required. Certificate of Insurance attached as Annex B. WSIB clearance certificate attached as Annex C.
Surety bonding through Aviva Insurance — current capacity letter attached as Annex D. Single-project bondability up to $1.2M, aggregate program up to $4M, well above this solicitation's value.
Three projects of comparable scope and value in the last 60 months — references provided in Annex E. Two on CFB Petawawa (one direct DND, one DND-subcontracted), one for an Ontario hospital expansion. Project values $325K, $410K, $580K. References include the prime contractor and the DND contracting authority.
Technical Approach
Phase 1 — Mobilization (Week 1)
- Site setup, materials staging, supervision orientation
- Coordination meeting with prime general contractor and DND project authority
- Preliminary as-built verification against drawings A-2.1, M-1.1, M-2.1
- Submittals: HVAC equipment cut sheets, gas-line piping schedule, lockout/tagout plan
Phase 2 — Rough-in execution (Weeks 2–7)
- HVAC trunk distribution — galvanized supply/return ductwork through corridors A and B; supply branches to 14 areas per drawing M-1.1
- Plumbing rough-in — new wash-up and locker areas: water supply (cold + tempered), DWV, vent stacks per drawing M-2.1
- Natural-gas service — relocated boiler plant tie-in; pressure test and TSSA inspection; coordination with utility for any required service upgrade
- Daily safety briefing per CFB Petawawa contractor protocols; weekly schedule update to prime
Phase 3 — Inspections & closeout (Weeks 8–9)
- Pressure tests on water and gas distribution, witnessed by inspecting authority
- Air-balance commissioning of HVAC distribution, third-party balancer per spec
- As-built drawing markups handed to prime contractor for record set
- O&M manuals and equipment warranties handed to DND project authority
- Punch-list walkdown with project authority and prime; deficiencies cleared within 5 working days of identification
Schedule
9-week schedule from notice-to-proceed, broken into the three phases above. Weather contingency: 5 working days built into Phase 2 for HVAC penetration weatherproofing should renovation expose unscheduled exterior conditions. Schedule includes 2 working days in week 7 for pre-substantial-completion punch with prime.
Pricing Summary
| Work item | Subtotal CAD |
|---|---|
| Mobilization, supervision, site overhead | $24,800 |
| HVAC trunk distribution — materials | $98,400 |
| HVAC trunk distribution — labour | $72,300 |
| Plumbing rough-in — materials & labour | $48,900 |
| Natural-gas service relocation — materials & labour | $54,200 |
| Inspections, commissioning, balancing | $18,500 |
| As-builts, O&M, closeout | $11,200 |
| Bonding & insurance | $8,400 |
| Contingency (10%) | $33,700 |
| Profit & overhead (3%) | $8,000 |
| Total firm bid (excl. HST) | $378,400 CAD |
Compliance & Certifications
- WSIB Clearance Certificate active (Annex C)
- TSSA-registered gas contractor — Class A gasfitter on staff (Annex B credentials)
- ISO 45001 — occupational health and safety (current attestation)
- Bondable for single project up to $1.2M (Annex D)
- CFB Petawawa contractor orientation — completed within 12 months, attached
- Code of Conduct for Procurement & Integrity Regime declarations — signed, attached
What we'd add before submitting
P.R.O.C.U.R.E. drafted the body. Before submission:
- Get the actual sign-in sheet from the mandatory site meeting (M3)
- Pull a fresh WSIB clearance certificate dated within 60 days
- Confirm with surety that the bondability letter is current; refresh if older than 30 days
- Get reference letters from the two prior CFB Petawawa engagements signed by the actual project authorities (not the company contact)
- Verify the schedule fits prime contractor's overall sequence — coordinate with their project manager before locking the 9-week commitment
- Have your estimator double-check the materials line items against current Q2 2026 supply pricing — copper and galvanized are volatile right now