Dixon Marine Services, Inc.

Dixon Marine Services, Inc., doing business as Dixon Marine, is a woman-owned small business headquartered in Inverness, California, specializing in contaminated sediment dredging, pipeline dredging, and wetland restoration and construction. The vendor operates as a prime contractor on about 31% of recent awards and as a subcontractor on 69%, competing predominantly under total small business set-asides. Dixon Marine is a for-profit Subchapter S corporation classified under NAICS 237990 (Other Heavy and Civil Engineering Construction) and NAICS 541330 (Engineering Services).

Dixon Marine's recent prime work centers on the U.S. Army Corps of Engineers. The vendor was awarded a $1.765 million definitive contract by the Portland District on July 1, 2026, for pipeline dredging operations—approximately 80,000 cubic yards of contaminated sediment removal—at Garibaldi and Depoe Bay, Oregon, with an ultimate completion date of March 15, 2027. An earlier $837,497 Corps of Engineers definitive contract from the Sacramento District (awarded March 1, 2022) called for tidal wetland construction and salt marsh enhancement in Alameda, California, including excavation of a 7.2-acre tidal wetland basin, grading and enhancement of 13.2 acres of degraded salt marsh, and five years of invasive species control and planting monitoring. Both awards were set-aside for total small businesses and are firm fixed price.

Customer concentration is tightly held across three federal agencies. The Department of Homeland Security Coast Guard accounts for 11 of 16 total awards (69% by count) but carries negligible dollar value; the two Army Corps of Engineers districts—Portland and Sacramento—account for the remaining 2 awards but anchor nearly all combined potential value at $2.602 million (98% of the $2.7 million portfolio). Ranking by potential value inverts the by-count distribution, placing the Portland District first at $1.8 million and the Sacramento District second at $837 thousand.

Dixon Marine sits on the Nationwide Environmental Engineering Services vehicle, from which eleven subcontract task orders have been placed through Bb&E, Inc. as the prime contractor. Work performed on those sub tasks includes hydrographic surveys, environmental permitting to support dredging at multiple stations, and implementation of approved sampling and analysis plans (SAP) for in-water work, all awarded to Dixon Marine on August 19, 2022. One prime award—the Portland District pipeline dredging contract—reaches ultimate completion inside the next twenty-four months, presenting a $1.8 million recompete opportunity for the vendor and for competing dredging firms. The portfolio carries 100% obligation across all awards.

Dixon Marine Services provides services related to water quality assessment, sediment evaluation and removal, upland management of impacted sediments and restoration of wetlands. Our skilled staff continues to develop new technological applications and works with the latest water quality and sediment sampling (vibracore) equipment available to provide accurate and reliable data on a consistent basis. We are an integration of scientists and operating engineers with backgrounds in marine biology, ichthyology, hydrogeology, engineering, geography and environmental science. We have a proud history of client satisfaction, with a variety of clients that range from small local ground and agencies to multi-million dollar international consulting firms. We are known for our determination and problem-solving skills, technological innovations and exceptional client support providing the best service combined with the appropriate technology to produce the best results for the project.