Dredging

Ballard’s award-winning dredging services have made us an industry leader in the removal and disposal of hazardous waste. Ballard regularly performs mechanical, and diver assisted dredging to remove accumulated debris and sediment from power and utility plants, facilitating access for inspections and repairs.

Full Services List

Expand each (+) for a list of services.

Inspection and Survey

  • Mechanical and Structural Inspection
  • Scour Assessment
  • Inlet / Outlet Works, Penstock & Tunnel Inspection
  • Sonar-enhanced Inspection
  • Coating & Corrosion Inspection
  • Weld Inspection
  • Leak Detection
  • FERC Part 12 Inspection Support
  • Bridge Inspections
  • Scour Investigations
  • Bathymetric Surveys
  • ROV Services
  • Lock and Dam Inspections
  • Pipeline and Outfall Locating and Mapping
  • Cable Locating and Mapping
  • Non-Destructive Testing
  • Ultrasonic Inspections
  • Magnetic Particle Inspections
  • Port & Ferry Terminals
  • Tunnels and Aqueducts
  • Concrete, Steel & Wood Inspection
  • Ship Husbandry
  • ABS Class Inspections
  • Underwater Sediment Sampling
  • Color Closed Circuit HD Video
  • Color and B/W HD Photography
  • Land and Marine Surveying

Contaminated and Potable Water Diving

  • Raw Sewage / Clarifier
  • Biological / Chemical / Industrial Effluent
  • Nuclear Spent Fuel Pools / Reactors
  • Drinking Water Supply
  • Water Towers / Standpipes / Reservoirs

Construction, Maintenance and Repair

  • Debris and Sediment Removal
  • Concrete Repair and Leak Sealing
  • Epoxy and Chemical Grout Injection
  • Head Gate Adjustment and Repair
  • Certified Weld Repairs
  • Scour Protection and Remediation
  • Pumped or Tremie Concrete Placement
  • Erosion Control and Mitigation
  • Bulkhead, Pier and Pile Rehabilitation
  • Gate Rehabilitation and Installation
  • Boom and Barrier Installation
  • Trash Rack/Stop Log Removal and Replacement
  • Spillway Rehabilitation / Resurfacing
  • Intakes and Tunnels
  • Sediment Removal
  • Traveling Water Screens
  • Welding and Burning
  • Cooling Towers
  • Concrete Repair
  • Revetment Mats
  • CP Installation
  • Pipe and Cable Repair
  • Underwater Coating

Environmental and Remediation

  • Shoreline Erosion
  • Soil Retention and Stabilization
  • Stream Restoration
  • Habitat Restoration
  • Soil and Water Sampling
  • Waterbars-Diversionary Methods
  • Vibracore Services
  • Turbidity Curtains (Installation and Maintenance)

Hyperbaric

  • Formulating Project Hyperbaric Manual (Sir, Mixed Gas or Saturation Mode)
  • Obtaining Variances for Alternate Tables
  • Mixed Gas and Saturation Intervention Work
  • Data Analyses
  • Client Liaison
  • Occupational Health and Safety Implementation
  • Consultation on Airlock System Design
  • Audit/Appraisal
  • Environmental Controls
  • Training of Contractor Personnel
  • Hazard / Health and Safety Analysis
  • TBM Intervention
  • Working at Altitude
  • Construction in Compressed Air
  • Emergency and Confined Space Rescue
  • Compressed Air Workers
  • Manlock Attendants
  • Certified Welders
  • Intervention Supervisors
  • Hyperbaric Medics
  • Mixed Gas Workers
  • Intervention Projects Managers
  • Medical Lock Attendants
  • Physicians/Physicians’ Assistants
  • Mixed Gas Supervisors
  • Saturation Technicians / Workers
  • Hyperbaric Shuttle Attendants
  • Life Support Technicians for Saturation Operations
  • Saturation Supervisors
  • Special Bentonite Dive Tables
  • Jack Pack / Block Out Entry and Clean-Out
  • Installation of Rods into Lenton Fittings (Zero Visibility)
  • Dredging / Air Lifting
  • Tying Underwater Rebar, Install Rebar Mats for Tremie Plug
  • Installation of Water Stop Injection Tubing Around Perimeter of Shaft Prior to Installation of Tremie Plug
  • Underwater Video Inspection of Flooded Shafts and Tunnels
  • Sonar Inspection of Flooded Shafts and Tunnels
  • Pressure Grouting, Concrete Placement
  • Concrete Demolition
  • Erection of Structural Steel
  • Drilling and Blasting Overburden
  • Hyperbaric Training
  • Medical Support
  • Specialize TBM Hyperbaric Equipment & Related Tooling
  • SAT (Tunnel Specific – Saturation Diving Chambers)
  • 10 & 20-Man Tunnel Specific – Ready for Deployment
  • Medical Locks
  • Man Locks
  • Shuttles with Locks (Darts)
  • Hydraulic Tools for Breaking Rock and Sediment Removal
  • Hyperbaric Welding Equipment
  • Rail Mounted Grade D Breathing Air Compressor Package
  • Communication Systems
  • HD Video
  • Mixed Gas Integration into the TBM System
  • Compressors

Industrial

  • Access of Confined Spaces for Inspection and Repair
  • Dredging and Silt Removal
  • Wastewater System Maintenance and Repair
  • Pump House Maintenance and Repair
  • Traveling Screen Repairs
  • Invasive Species Remediation
  • Hazardous Waste Diving
  • Trash Rack Repair and Cleaning
  • Intake Crib Inspection, Construction and Repair
  • Intake Systems (Including traveling water screens, gates and water control structures)
  • Pipeline Inspection, Repair (internal and external) and Construction
  • Certified Underwater and Topside Welding
  • Marine Loading / Offloading Terminals
  • Clarifiers / Rakes
  • Aerators
  • Floating Turbidity Curtains
  • Cooling Ponds
  • Outfall Systems
  • Foul Air Duct and Piping
  • Chlorine, Bromide, and Air Diffuser Systems

Locks, Dams & Hydropower

  • Dams
  • Reservoirs / Forebay (impounded sediment and debris)
  • Low Level Outlets
  • Bulkheads and Stoplogs
  • Intake/Outfalls
  • Trash Rack / Grizzlies
  • Gates and Water Control Structures (stems, controls)
  • Pipelines / Penstocks
  • Locks
  • Siphons
  • Spillways

Low Level Outlet (LLO)

  • LLO Inspection & Rehabilitation
  • LLO Inspection & Rehabilitation
  • Gate / Gate Guide Inspection & Rehabilitation
  • Gated Dam Outlet Inspection & Rehabilitation
  • Water Control Structure Inspection & Rehabilitation

Underwater and Marine Construction

  • Certified Welding to AWS Standards
  • Underwater Exothermic Burning
  • Concrete, High-Pressure Grouting
  • Core Drilling, Track Sawing
  • Diamond Wire Sawing
  • Piling Repair – Wood, Steel, Concrete
  • Water Jetting and Dredging
  • Debris Removal
  • Zebra Mussel / Invasive Species Control
  • Pipeline, Installation and Locating
  • Pipeline Penetrations
  • Pipeline Pigging
  • Cable Installation and Locating
  • Diffuser Repair and Installation
  • Coffer / Limpet Dam Fabrication & Sealing
  • Cathodic Protection Engineering Services
  • Anodes / Cathodic Protection
  • Anode Manufacturing
  • Outfall Repair and Construction
  • Trash Rack Repair and Installation
  • Traveling Water Screen Repair
  • Sluice and Trunnion Gates
  • Circulating Water Pumps Intake Screens
  • Chemical and Air Diffusion Systems
  • Underwater Painting and Coatings
  • Pile Driving
  • Marine Crane Services
  • Ship Husbandry and Repairs
  • Vessel and Barge Rentals
  • Surface / Mixed Gas Diving 0-299 Feet
  • Saturation Diving 250-1200 Feet

Nuclear

  • Circulating Water Pumps
  • Concrete Repair and Placement
  • Concrete Decontamination Shaving/Scabbling
  • Cooling/Spray Pond, Tower Inspection, Cleaning
  • Cooling Water Pipes/Tunnels
  • Decommissioning
  • Environmental Maintenance
  • Erosion Control
  • Foreign Object Retrieval & FME Verifications
  • Gates and Water Control Structures
  • Hazardous Waste, Contaminated and Radiation Diving
  • Intake and Discharge Systems Maintenance and Repair
  • Mollusk Remediation Services
  • Storage Tanks (Water, Fuel, etc.)
  • Trash Rack and TWS Inspection and Repair
  • Traveling Water Screens
  • Underwater Concrete Surface “Lockdown Application”
  • Underground/Underwater Pipe Install and Replacement
  • Underwater Welding / Cold Cutting
  • Water Intake Systems

Plant Maintenance

  • Traveling Screen Rebuilds
  • Intake Cleaning
  • Trash Rack Cleaning
  • Log Boom Maintenance
  • ROV Inspections (Entire Length of Intake)
  • Collector Well Maintenance

Salvage & Marine Casualty

  • Salvage of Commercial Vessels (Tugs, Barges, Bulk Carriers, etc.)
  • Salvage of Recreational Vessels (Yachts, Houseboats, etc.)
  • Salvage of Aircraft
  • HAZMAT Services
  • Fuel and Cargo Lightering
  • In-house Naval Architect
  • Compartment and Confined-Space Entry Teams
  • Emergency and Rescue Towing
  • Emergency Upland and Marine Spill Response
  • Casualty Containment
  • Underwater Demolition
  • Refloating of Vessels
  • Environmental Mitigation
  • Underwater Repair
  • Barge and Vessel repair
  • Bubbler Curtain/Boom Installation
  • Sub-bottom Profiling/Hydrographic Surveys

Utility

  • Submarine Cable (High Voltage and Telecom)
  • River Cable Crossings
  • Conduits / Culverts
  • Reservoirs / Remote Inland Waterways
  • Oxygenation Systems
  • Desalination
  • Intake Structures and Screens
  • Pump Stations
  • Transmission and Distribution
  • Pipelines

Waterfront & Ports

  • Docks / Piers
  • Utility Systems
  • Piling Rehabilitation, Repair, and Installation – Wood, Steel, Concrete
  • Water Jetting and Dredging
  • Debris Removal
  • Zebra Mussel / Invasive Species Control
  • Cathodic Protection System and Engineering Services
  • Anodes / Cathodic Protection
  • Anode Manufacturing
  • Outfall Repair and Construction
  • Underwater Painting and Coatings
  • Pile Driving
  • Marine Crane Services
  • Scour Investigations
  • Bathymetric Surveys
  • Non-Destructive Testing
  • Ultrasonic Inspections
  • Magnetic Particle Inspections
  • Underwater Sediment Sampling
  • Impounded Sediment Removal
  • Shoreline Erosion
  • Soil Retention and Stabilization
  • Stream Restoration
  • Habitat Restoration
  • Soil and Water Sampling
  • Vibracore Services