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Underwater pipelines are important, often critical infrastructure to the successful and safe operation of other facilities.  The potential hazards to their longevity, myriad of regulatory jurisdictions, and factors affecting their proper integration into the environment are often underappreciated.

Our engineers and scientists have experience on over 100 km of underwater pipelines in oceans, lakes and rivers.


GreatPacific is trusted for our complete knowledge of pipeline project delivery and asset maintenance including planning, regulatory permitting, design, inspection, commissioning, operations and maintenance.  We maintain a commercially certified engineering dive team to collect information first hand, and employ a host of technical inspection tools to provide owners the best information to make pragmatic decisions.


Pipeline Feasibility Studies and Route Selection

  • Constraint Mapping

  • Stakeholder Engagement 

  • Regulatory Compliance

  • Engineering and Construction Feasibility

Engineering Field Surveys

  • Dive Survey (WorkSafe BC Certified Engineers and Scientists)

  • Remotely Operated Vehicles (ROV)

  • Bathymetric survey and remote sensing (e.g. Side-scan Sonar)

  • Metocean data collection (currents, tides, waves)

Regulatory Approvals and Stakeholder Consultation

  • Discharge permitting and Municipal Wastewater Regulation (MWR) registration 

  • Liquid waste management planning 

  • Crown land applications

  • Water winthdrawal applications

  • Fisheries Act and other regulatory applications

Effluent Plume Dilution and Dispersion Modeling

  • USEPA dilution modeling (Visual Plumes, CORMIX)

  • Hydrodynamic modeling (Mike 3)

Detailed Design Services

  • Outfall engineering

  • Intake engineering

  • Treatment plant design

  • Distribution system design

  • Lift stations and storage tanks

  • Fire protection

  • Trenchless pipeline installations (microtunnelling [TBM] and horizontal directional drill [HDD]) 

  • Rope-access & Fall-arrest systems

Outfall, Intake and Treatment System Inspections

  • Divers (certified commerical diving engineers and scientists)

  • Remotely operated vehicles (ROV)

  • Bathymetric survey and remote sensing (e.g. Side-scan sonar)

  • Condition assessment

  • Asset management

  • Repair & remediation

Oceanographic Data Collection & Surveying

  • Acoustic doppler current profilers (ADCP)

  • Drogues (current tracking) with/without realtime telemetry

  • Water and sediment sampling

  • Water column profiling (CTD)

3D drafting and modeling (eg. AutoCAD Civil 3D, SolidWorks) is available for confirming fitment of infrastructure or parts prior to fabrication and installation, as well as for analyzing loads with finite element analysis (FEA) and computational fluid dynamics (CFD). 

Complementary Engineering Services

  • Project management (PMP & MCPM certified professional engineers)

  • Tendering

  • Construction contract administration (eg. CCDC, MMCD)

  • Water/wastewater treatment plant start-up, commissioning, and optimization

  • Operator training

Organizational Quality Management Program

GreatPacific Consulting Ltd. is Organizational Quality Management Program (OQM) certified by the Association for Professional Engineers and Geoscientists  of British Columbia (APEGBC).

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