Stetson Engineers Inc.

Stetson Engineers Inc., based in San Rafael, California, provides water resources engineering, environmental consulting, and expert witness services to federal agencies as a prime contractor across full-and-open competition, with no small business set-asides across its 159 recent awards.

Stetson is a for-profit environmental consulting firm with over 60 years of operating history. Its capability portfolio centers on expert witness testimony and technical analysis in complex environmental and water litigation — the top NAICS category is All Other Legal Services (93 awards) and the dominant PSC is Support-Professional: Expert Witness (74 awards) — complemented by environmental monitoring, water quality testing, numerical modeling of nutrient transport, and technical consulting on water resources matters. Representative prime work includes a $1.264 million time-and-materials purchase order from the Department of Justice's Environment and Natural Resources Division (awarded April 2023) for expert witness services through February 2028; a $5.691 million firm-fixed-price delivery order from the U.S. Marine Corps (June 2022, under GSA Multiple Award Schedule) for water litigation support at Camp Pendleton North, California, extending through May 2027; a $489,886 firm-fixed-price purchase order from Naval Information Warfare Systems Command (August 2023) for numerical modeling of nutrients transport and water quality testing, performed in San Diego with completion October 2029; and a $197,000 purchase order from DOJ Environment and Natural Resources Division (September 2024) for expert witness services. Most recent activity includes a $139,628 purchase order from DOJ (May 2026) for expert witness services on time-and-materials basis through February 2031.

Customer concentration is driven by litigation-support demand within DOJ. The Department of Justice's Environment and Natural Resources Division accounts for 53 awards (62% coverage for top four customers) worth $9.9 million combined potential value, and the broader DOJ organization absorbs additional volume in the Justice Management Division. The U.S. Marine Corps ranks first by potential value with 12 awards totaling $15.2 million, including the flagship Camp Pendleton water litigation delivery order. The GSA Federal Acquisition Service contributes $12.9 million across two awards, anchored by Stetson's GSA Multiple Award Schedule vehicle. The Department of the Interior's Bureau of Indian Affairs and the Department of the Army Corps of Engineers round out the top five customer agencies by potential value.

Stetson holds a GSA Multiple Award Schedule (MAS) contract with a $4.4 million ceiling through July 2029, renewed most recently on July 16, 2024. The MAS vehicle has generated 22 task orders worth $16.2 million combined potential value, the primary vehicle for Marine Corps and Navy ordering. The vendor also operates under two indefinite delivery contracts (INISMP00050139 and 539A2801N34) generating smaller task-order volumes. Stetson competes as a 100% prime contractor — zero subcontract exposure — and maintains full-and-open posture across all awards with no set-aside participation.

Activity has contracted in the past two years (five awards in 2024, one in 2025, one in 2026 year-to-date) after heavier volume in 2022–2023, though the recent awards carry larger ceiling values. Combined potential value across all 159 awards stands at $51.1 million, with $41.3 million obligated (81% of potential). Eight awards with combined potential value of $9 million will reach completion in the next twenty-four months and therefore face recompete exposure. Work is performed primarily in San Anselmo and San Rafael, California, with subordinate performance locations at Camp Pendleton North and San Diego, California; the firm operates nationwide under the GSA Schedule.

Water Resources Engineering, including hydrologic and hydrogeologic studies, technical support for water rights, and water resources facilities design.