Mount Pleasant Station Utility Re-Routing and Manhole Installation
Executive Summary
JPD Contracting delivered the complete scope at Mount Pleasant Station, combining utility re-routing and deep manhole installation into a single integrated project. The scope included relocating critical utilities along the station alignment, removing obsolete steel sewer lines, and installing new HDPE sewer lines to enable roof construction of the underground station. Following this enabling work, our team installed two precast manholes — S4 (1050 mm sanitary) and D4 (1350 mm storm) — outside the station to reconnect the rerouted services. All works were executed under BSCGP’s quality, safety, and environmental programs, in full compliance with City of Vancouver requirements and WorkSafeBC Part 20 regulations.
Project Overview
This project integrated utility relocations and deep manhole installations into a unified scope. JPD Contracting rerouted utilities at the brick chamber and shotcrete face to allow construction of the underground station roof. Our team then delivered the manhole installation works:
- Supplied and set two new precast manholes — S4 sanitary (1050 mm) and D4 storm (1350 mm) — on reinforced concrete bases.
- Executed a deep excavation to approximately 6.5 m, supported with engineered shoring and trench boxes under WorkSafeBC Part 20 requirements.
- Installed and realigned PVC laterals (6″ and 10″ SDR-35) with long-radius fittings, ensuring municipal compliance.
- Backfilled around the structures with Controlled Density Fill (CDF) between the manholes and imported compacted road base elsewhere, followed by density testing.
- Reinstated the sidewalk surface to original condition per City of Vancouver standards, using pre-work photographic references to ensure finish matching.
Outcomes at a Glance
- Zero recordable incidents; confined-space and deep-excavation controls audited and accepted.
- Utilities successfully rerouted to clear the footprint for station construction.
- Both manholes set to line and grade on first placement; invert checks verified by survey.
- CCTV and leakage testing accepted; turnover dossier approved.
- Sidewalk reinstated to CoV standards; area reopened to the public on schedule.
Project Challenge
The works were carried out on a tight footprint along a narrow sidewalk within an active station workface.
Constraints included:
- Live utilities including an active water main and BC Hydro poles requiring temporary support.
- Shotcrete coring for new tie-ins at precise locations.
- Deep excavation to 6.5 m with engineered shoring and geotechnical monitoring.
- Community sensitivity with noise, vibration, and access management.
Our Solution
JPD engineered and executed the complete scope as a single, integrated package that balanced safety, schedule, and quality. The work combined utility re-routing, manhole installation, and service reconnections while maintaining continuity and compliance with City of Vancouver standards.
Key actions included:
- Completed re‑routing of all sewer lines at appropriate elevations.
- Safely demolished a large section of shotcrete to access utility connections.
- Re‑routed external utilities to allow excavation for manhole installation.
- Performed excavation using hydrovacs for precision around live services.
- Designed and installed pole holders to support electrical poles, ensuring safe access in high‑risk areas.
- Installed a custom slide‑rail trench box at 6.5 m depth using excavators and trained personnel.
- Benched and installed precast manholes to design specifications.
- Conducted all required testing, including CCTV inspections and leakage tests.
- Backfilled and compacted using CoV #9 road base and CDF, with full compliance testing.
- Reconstructed the site walkway to City of Vancouver standards.
- Issued red‑line drawings to the client for record.
Results & Value
- Integrated execution strategy simplified sequencing and reduced risk.
- Utility re-routing and manhole installation were both delivered to specification.
- QA/QC acceptance achieved, including CCTV, leakage, and compaction testing.
- Site reinstated to original condition, reopening to the public on schedule.
- All work delivered safely, efficiently, and in compliance with City and WorkSafeBC standards.
“Tight footprint, live utilities, and a station construction zone demanded meticulous planning. Our team sequenced every lift, test, and inspection to keep stakeholders aligned and the sidewalk safe for the public.”
— Daniel Aguero, Project Director, JPD
