Coastline LTD.

Coastline LTD., a for-profit subchapter S corporation based in Alexandria, Virginia, delivers water treatment chemicals, HVAC maintenance services, and facility infrastructure support to federal agencies as a prime contractor (99% of recent awards), competing predominantly under total small business set-asides and full-and-open contracts across civilian and defense customers.

The vendor specializes in concrete facility-maintenance services: cooling tower cleaning and water treatment, HVAC chemical treatment programs, water softener installation and repair, reverse osmosis system replacement, boiler and closed-loop system maintenance, and related chemical supply for federal installations. The company holds two active indefinite-delivery contracts anchoring its footprint: a single-award IDC with the Smithsonian Institution (ceiling $920,743.15 through October 2026) covering institution-wide water treatment repairs and chemical programs across Washington D.C. and Suitland, Maryland; and a Naval Facilities Engineering Command single-award IDC (ceiling $1,245,196.96 through April 2027) for HVAC chemical water testing and treatment at Dahlgren Naval Support Facility in Virginia. Representative work includes a $1,187,648 definitive contract from Air Mobility Command (November 2025 through November 2030) for comprehensive industrial water treatment chemicals and technical services protecting water cooling towers at Joint Base McGuire-Dix-Lakehurst, New Jersey; an $11.6 million definitive contract from the Department of the Army Southwest Region (August 2022 through August 2027) for HVAC chemical water treatment services at Fort Hood, Texas under total small business set-aside; and a $9.6 million definitive contract from the Department of Defense Northeast Region (through October 2028) for Fort Detrick Consolidated Chemical Supplies, with economic price adjustment provisions.

Customer concentration is distributed across four major federal buying centers. The top five customers by combined potential value account for 79% of the recent award footprint: the Department of the Army Installation Management Command Southwest Region leads (31 awards, $19.8 million combined potential value), followed by the Department of the Army Installation Management Command Northeast Region (15 awards, $18.2 million), the GSA Federal Acquisition Service (39 awards, $18 million), the Department of the Air Force Air Education and Training Command (11 awards, $11.6 million), and the United States Marine Corps (20 awards, $4.9 million). By award count, the Smithsonian Institution ranks first (49 awards, $3.7 million combined potential value), reflecting its reliance on Coastline for routine cooling tower and fountain maintenance at multiple museum locations, but the institution's awards are individually smaller than Army and Air Force facility contracts. The vendor serves 37 distinct federal agencies across the recent award dataset.

Coastline places task orders under five primary parent vehicles. The Federal Supply Schedule GS10F7871A (GSA) carries 49 task orders totaling $304 thousand in combined potential value. An Army IDC (SPM7W108DE041) hosts 26 task orders valued at $265 thousand. The GSA Multiple Award Schedule anchors 21 task orders at $3 million combined potential value. An Army IDC (M6700112D0007) supports 14 task orders at $1.8 million. A Department of Defense IDC (W9115111D0001) funds 13 task orders at $1.9 million. The vendor's seat on GSA schedules and Army regional indefinite-delivery vehicles provides standing authority to respond to task-order opportunities without full recompete.

Activity shows volatility but demonstrates sustained customer engagement: 9 awards in 2022, 13 in 2023, declining to 4 in 2024, rebounding to 11 in 2025, with 1 award to date in 2026. The combined potential value across all 285 awards (prime and sub) is $91.2 million, with $36.9 million obligated (40% drawn). Five awards carrying $12.5 million in combined potential value reach ultimate completion within the next twenty-four months, representing recompete exposure concentrated in small-dollar, high-frequency task orders rather than single large contracts.

Coastline operates primarily as a prime contractor with minimal subcontract footprint — a single named sub-award documented under Alutiiq Logistics & Maintenance Services as the prime contractor for Rivanna Station base operations water treatment products and services (September 2015). The vendor's Service Contract Inventory footprint is minimal: one SCI-reportable record in FY2024 carrying $71 thousand in invoiced revenue, insufficient to characterize workforce scale or labor pricing. This reflects Coastline's business model concentrated on products (chemicals, equipment) and small-scale maintenance services rather than large labor-intensive service programs typical of SCI reporting.

The vendor's NAICS distribution emphasizes chemical manufacturing and water-infrastructure specialization: 127 awards under All Other Miscellaneous Chemical Product and Preparation Manufacturing (NAICS 325998), 54 under Water Supply and Irrigation Systems (NAICS 221310), 27 under All Other Miscellaneous Manufacturing, 21 under Steam and Air-Conditioning Supply (NAICS 221320), and 15 under Plumbing, Heating, and Air-Conditioning Contractors (NAICS 238220). PSC concentration mirrors this profile: 75 awards under Chemicals, 41 under Miscellaneous Chemical Specialties, 29 under Hardware Commercial, 12 under Quality Control Water Purification Equipment, and 11 under Maintenance/Repair of Plumbing and HVAC Equipment. The portfolio composition reveals a vendor selling both chemical products and hands-on facility maintenance, with the majority of awards representing delivery orders on standing contracts rather than new competitive procurements.