Certified Stainless Service Inc.

Certified Stainless Service Inc., doing business as West-Mark, manufactures specialized transportation equipment and vehicles—water trucks, fuel trucks, dump trucks, trailers, cement mixers, and vacuum cleaning units—for federal logistics operations as a prime contractor holding two large single-award indefinite delivery vehicles with the Defense Logistics Agency. The company competes predominantly unrestricted (100% prime awards, no set-asides in recent volume), though selected awards carry total small business set-aside designations.

West-Mark is a for-profit Subchapter S corporation and Labor Surplus Area Firm based in Ceres, California, registered in SAM since January 2002. The vendor holds no formal SBA socioeconomic certifications; its footprint spans unrestricted and set-aside procurements alike, with the bulk of recent work flowing through unrestricted federal vehicles and direct defense logistics channels. Recent activity shows 933 awards over the past several years, with combined potential value of $2.67 billion, though only 14 percent has been obligated to date—a pattern typical of large IDV holders.

Customer concentration reflects overwhelming dependence on a single customer. The Defense Logistics Agency Troop Support Construction and Equipment division accounts for 480 awards (68% of all awards) and $1.85 billion in combined potential value (74% of all dollars). The gap between second and first customer is vast: GSA Federal Acquisition Service places 91 awards for $39.4 million. The Department of the Army Materiel Command Contracting Command Detroit Arsenal contributes 11 awards valued at $57.7 million—a high-dollar concentration despite low award count, anchored by an Army TACOM bulk fuel distribution system contract. Beyond these three, the vendor serves 91 other federal agencies with sporadic, small-dollar awards through the Multiple Award Schedule and various agency-specific procurements. This customer concentration carries recompete risk: 51 awards worth $13 million are due to complete within the next twenty-four months.

West-Mark's vehicle position centers on two DLA IDVs and GSA schedules. The primary vehicle is a $421.8 million single-award IDV with DLA Troop Support Construction and Equipment (awarded February 10, 2023, through February 2028) covering commercial trucks, trailers, and related transportation equipment for global military logistics. A second DLA IDV—$158.2 million single-award covering commercial sweeper and scrubber equipment (awarded October 25, 2023, through October 2028)—anchors vacuum and cleaning equipment delivery. Under the GSA Multiple Award Schedule, West-Mark holds position on the Federal Supply Schedule and executes delivery orders for civilian agencies, including the Forest Service, Bureau of Land Management, National Park Service, and Army Corps of Engineers. Two legacy DLA IDVs (SPE8EC18D0006 at $121.8 million across 214 task orders and SPE8EC23D0004 at $47.6 million across 146 task orders) remain active with task orders completing through 2026 and 2027, likely predecessor vehicles or carryover authority. Representative prime work includes a $18.7 million delivery order from the Army Program Executive Office for Combat Support and Combat Service Support for Bulk Fuel Distribution System engineering and commissioning (July 2024), a $1.56 million total small business purchase order from the Department of Interior Bureau of Land Management Alaska Region for replacement fuel tenders (September 2024), a $1.33 million delivery order from DLA for a water truck at Camp Roberts (April 2024), and dozens of task orders in the $50,000 to $500,000 range for tractors, trailers, water trucks, and dump trucks issued monthly by DLA Troop Support.

Activity has fluctuated: 64 awards in 2022, climbing to 88 in 2023, declining to 77 in 2024, then dropping to 44 in 2025 and 30 through May 2026—a trajectory consistent with vehicle maturity and workload execution rather than market loss. West-Mark records minimal subcontract activity: only one sub-award appears in the source (a pure water trailer sub to Atlantic Diving Supply, June 2024, under a defense contract). The vendor operates as pure prime on its standing vehicles and GSA schedule.

West-Mark's capability portfolio derives directly from its vehicle scope and award history. Water and fuel truck manufacturing dominates—hundreds of delivery orders specify 2,000- to 5,000-gallon water trailers, fuel trucks, and water tankers. Trailer manufacturing spans tilt-deck, cargo, lowboy, gooseneck, drop-deck, tag, and fixed-neck configurations. Heavy equipment includes dump trucks, cement mixers, refuse trucks, tractors, semi-tractors, and stake-bed trucks. Specialized equipment includes trailer-mounted welders, vacuum pump cleaner units, sewer jetting maintenance trailers, and aircraft fuel servicing vehicles. The vendor also delivers non-standard military equipment and has a history of repair and modification work (e.g., a $19,116 repair contract with the U.S. Forest Service for water tender tank crack repair, September 2023). West-Mark does not appear to subcontract major portions of work; it manufactures in-house at its Ceres facility.

The corporate structure entry lists four named subsidiaries, all appearing to be registrations under the same legal entity (Certified Stainless Service, Inc.), suggesting no distinct operational arms or specialty divisions separate from the West-Mark brand.