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Dixon Marine Services, Inc. (DMS)
Dixon Marine Services, Inc. (DMS) has accomplished a wide variety of projects on the water. They provide private and public sector clients with marine/environmental science consulting services including sediment characterization, water quality monitoring, physical oceanography, construction management, and dredge material management.
Year Established
Industry Category / Asset Type
Company - Technical Services
Local Address & Phone
12786 Sir Francis Drake Blvd      [map]
InvernessCA (California)  94937
Marin  County / Region
United States
(415) 669-7369
(415) 669-7409
Mailing Address
P.O. Box 424  
InvernessCA (California)  94937
United States
Key Personnel
Rebecca  Dixon
Mark  Sutton
Industry Codes
Standard Industrial Classification
1794   -   Excavation work
4959   -   Sanitary services, nec
4971   -   Irrigation systems
8399   -   Social services, nec
8711   -   Engineering services
8748   -   Business consulting, nec
North American Industry Classification System
221310   -   Water supply and irrigation systems
238990   -   All Other Specialty Trade Contractors
541330   -   Engineering services
541620   -   Environmental consulting services
562910   -   Remediation services
813312   -   Environment and conservation organizations
Unique Capabilities

Dixon Marine Services, Inc. provide the following:

  • Wetland Restoration
  • Water Quality Monitoring
  • Aquatic Habitat Monitoring
  • Surveying
  • Vibracore and Sediment Sampling
  • Consulting/Permitting
  • Dive Support

Site operations including:

  • Water management including creation of a hydraulic model to establish a water balance of the site
    • Sediment acceptance monitoring
    • Elevation monitoring of the mud surface using differential ground-positioning sonar (DGPS) survey techniques to evaluate consolidation rates
    • Bathometric surveys of ponds and channels
  • Construction services including:
    • Conveyance piping and control structure installation
    • Hydraulic and mechanical dredging of channels to enhance site hydraulics
    • Vernal pool construction
    • Water and sediment quality monitoring and management
    • Biological monitoring of the species
      • Density and activities of shorebirds
      • Western Pond Turtle
      • The endangered salt marsh harvest mouse, etc.

Dixon Marine Services, Inc. use the following equipment and vessel to perform their work:

    • 54 foot research vessel with a 4,000 lbs A-Frame
    • Two 20 kW Generators
    • Computer lab
    • Ample deck space
    • Full galley and only four foot draft makes the Lakota one of our most versatile vessel in the fleet
    • 30 foot jet boat built for speed 
    • 1,000 lbs A-Frame and ample room to maneuver equipment
    • Can get you to your research site in a hurry and have the mussel to do some more challenging work for a boat of her size
    • 24 foot fiberglass work skiff has been the work horse for DMS
    • Deployed miles of turbidity curtain and has done hours of water quality testing
    • Has a 115 h.p. outboard engine
    • Draws only 6 inches
    • Large forward deck and work platform
    • Can be configured to fit any construction or scientific application
    • 18 foot “Four Wheel Drive” boat that will get you anywhere, literally!
    • Air Ranger has been utilized in many applications where normal vessels and vehicles can not get to
    • Very versatile and is currently configured with a 500 lbs
    • Removable A-frame which can be use for 2-3 inch sediment cores
    • Is designed to move across the grassland and mud flats almost as well as it goes through shallow swamps or skims across the deep water
    • 18 foot aluminum work skiff that is excellent addition to the fleet
    • Rugged and reliable boat that is able to take a beating on the hardest job
    • Field Equipment
    • The Hach Portable Spectrophotometer has more than 130 pre-programmed tests for water quality analysis
    • Automatic calibration adjustment and wavelength selection with a high performance optical system for accuracy and stability
    • The Hach Portable Turbidimeter provides field analysis of turbidity levels ranging from zero to one thousand NTUs with pre-programmed calibration
    • Meets the USEPA method 180.1 criteria
    • The Hach Portable Colorimeter tests for ninety plus methods with automatic wavelength detection
    • Hand-held and easy to use
    • This device is very useful for analysis in the field of:
      • metals
      • volatile acids
      • toxicity, and other parameters
    • The Hydrolab Quanta Unit is a multiparameter data sonde that is used at DMS for accurate profiling and spot measurements
    • Eureka Environmental Manta Unit – multiparameter data sonde
    • Campbell Scientific dataloggers
    • Amphibian Unit – handheld field data collector
    • Floating monitoring stations with independent solar energy source
    • 4” Standard Vibracore, with option of 6 or 8 inch head
    • Push core
    • Ponar Dredge 
Staff Expertise

Dixon Marine Services, Inc. have successfully completed the following training courses:

  • TrainingUSACE Contractor’s Quality Management Training
  • 40-hour Hazardous Waste Operations and Emergency Response
  • Forklift operation
  • Confined space
  • Emergency response
  • Fire extinguisher
  • Emergency medical training and first aid / CPR
  • California State Water Resources Control Board’s Quality Assurance Project Plans (QAPP) / Sampling and Analysis Plans (SAP)
Agency Type Number
State of California Professional Engineers/Surveyors #706937
Agency Type Number
WOB (Women-Owned Small Business)
Federal SBA (Self Certified) SBP (Small Business Program)
Customer Base

Dixon Marine Services, Inc. customers include the following:

  • Manson Construction Company
  • The County of Alameda, California
  • Blasland, Bouck & Lee, Inc. – international environmental engineering and consulting firm
  • The City of Novato, California
  • The Dutra Group – a Northern California dredging and materials firm
  • Envirocon, Inc. – a large environmental remediation company
  • Mirant Energy – an international power company
  • Montezuma, LLC – management for the Montezuma Wetlands Restoration Project
  • Moss Landing Harbor District – management of Moss Landing Harbor
  • North Bay Construction – a surface engineering, utility and public works contractor
  • R. L. Brosamer – Northern California civil engineering and construction company
  • The Ports of San Francisco and Oakland
Industry Sector(s)
  • Chemicals
  • Defense/Military/National Security
  • Energy/Utilities
  • Environmental
  • Government/Public Sector/Non-Profits
Geographic Area
  • Locally
Affiliation & Awards

Dixon Marine Services is Affiliated with the following:

  • U.S. Army Corps of Engineers
  • U.S. Fish and Wildlife Services
  • National Marine Fisheries Service
  • California Department of Fish & Game
  • California Coastal Commission
  • California Department of Water Resources and the
  • Regional Water Quality Control Boards
  • California Dredge Materials Management Office
  • San Francisco Bay Conservation and Development Commission
  • Point Reyes National Seashore Association
  • San Francisco Estuary Institute
  • The Department of Dam Safety
  • Department of Toxics

Dixon Marine Services is part of the following Societies:

  • EUCA
  • WEDA
  • Bay Planning Coalition
  • San Francisco
  • Society of Wetland scientists  
  • U.S. Coast Guard Captains’ license (100-ton ticket) #1100073
  •  California Department of Health Services Water Distribution Operator Grade D1 Certificate

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