Mainstream Commercial Diving


Mainstream Commercial Divers, Inc.

Mainstream Commercial Divers, Inc. (MCDI) is a full-service underwater inspection, construction, maintenance, and diving company. Since formation, MCDI has inspected, constructed, and maintained in-water structures of all types. MCDI is experienced in all aspects of inland commercial diving and underwater construction.

MCDI has personnel with extensive training and experience in underwater inspection and construction techniques and have successfully performed underwater inspection, construction, and maintenance projects on numerous dams, nuclear power plant facilities, large and small bridges, pipelines, water intake and outfall systems, stilling basins, mooring cells and mooring dolphins, docks, water storage tanks, wastewater treatment facilities, marine ways, and commercial vessels and barges. MCDI crews routinely work at heavy construction sites, major industrial sites, power plants, and governmental sites.

In the fall of 2015, MCDI was acquired by Moran Environmental Recovery, LLC (MER). MER is an integrated provider of specialized services to selected industries across the United States and Western Canada. MCDI's reputation and service diversity nicely complimented 2014's MER's acquisition of Eason Diving and Marine Contractors. At the end of 2016, MCDI and Eason Diving merged as one company under the Mainstream name. Mainstream and Eason Diving have regularly worked together on large projects over the years making the transition to one company a natural fit. 

MCDI's Charleston, South Carolina office has provided quality services to their clientele based throughout the southeastern United States. As a result of maintaining such high standards, their client base includes many governmental agencies, U.S. Army Corps of Engineers, U.S. Coast Guard, U.S. Environmental Protection Agency, U.S. Department of Energy, U.S. Navy and NOAA, just to name a few.

MCDI’s inspection capabilities include:

  • State-of-the-art closed circuit underwater television with audio
  • Professional engineering inspection and design
  • Hydrographic soundings
  • Mesotech scanning sonar inspections
  • Remotely operated vehicle (ROV) inspections
  • Video inspection and internal pipe cleaning
  • Side scan sonar
  • NDT ultrasonics
  • Pit gauge readings
  • Mil thickness readings
  • Coating adhesion testing

MCDI dive crews are experienced with working in all types of inland conditions including:

  • Shallow water
  • Deep water
  • Fast current
  • Large and small rivers, lakes, and streams
  • Contaminated water
  • Confined spaces