Mass Tank Inspection Services LLC

Mass Tank Inspection Services LLC, headquartered in Middleborough, Massachusetts, delivers aboveground and underground storage tank inspection, testing, maintenance, repair, and regulatory compliance services to federal agencies as a prime contractor (99% of recent awards). The company is a veteran-owned small business and service-disabled veteran-owned small business certified through May 9, 2027, structured as a limited liability partnership, and competes predominantly under set-aside vehicles — service-disabled veteran-owned small business sole source and set-aside, total small business set-aside, and veteran-owned small business set-aside designations recur across its prime footprint.

Mass Tank Inspection Services' capability portfolio centers on specialized storage tank infrastructure support grounded in API 653 certified inspection protocols. Representative prime work includes a $1.657 million service-disabled veteran-owned small business sole-source definitive contract from Veterans Integrated Service Network 2 (awarded April 1, 2023) for tank and underground pipe monitoring, inspection, maintenance, regulatory compliance, and emergency response services at Northport, New York running through March 31, 2028; a $485,519 service-disabled veteran-owned small business definitive contract from Veterans Integrated Service Network 19 (awarded July 22, 2024) for fuel storage tank inspection and fuel polishing services at Rocky Mountain Regional VA Medical Center in Colorado through July 21, 2029; and a $437,372 service-disabled veteran-owned small business purchase order from Veterans Integrated Service Network 17 (awarded April 1, 2025) for fuel storage tank testing, repairs, and upgrades at Dallas VA Medical Center through March 17, 2030. Concrete services span confined space entry operations, state-required documentation and reporting, quality control programs, manhole cover and containment pan replacement, pneumercator panel installation, epoxy coating, fuel polishing, cathodic protection removal, and emergency boiler plant repairs. The company also manufactures and delivers replacement tanks — notably a $172,000 service-disabled veteran-owned small business award from Colorado Army National Guard (September 2021) for 13 used oil and antifreeze storage tanks ranging 500 to 2,000 liters.

Customer concentration sits heavily with the Department of the Navy and Department of Veterans Affairs. The top five agencies account for 62% of awards by count and 79% of combined potential value. Navy Installations Command leads by dollar value with 20 awards worth $11.7 million combined potential value, while Naval Facilities Engineering Command carries the highest award count at 38 awards valued at $7.5 million. Veterans Integrated Service Network 2 follows with 19 awards worth $5.4 million. The Army Installation Management Command Northeast Region places 20 awards totaling $2.3 million, anchored by a $131,747 total small business indefinite delivery contract for storage tank testing, calibration, and repair at Fort Drum, New York. Activity has declined year over year — 23 awards in 2022 to nine in 2026 — with thirteen awards (combined potential value $2.5 million) reaching ultimate completion within the next twenty-four months and therefore exposed to recompete risk.

Mass Tank Inspection Services holds four primary indefinite delivery contracts: a $2.967 million service-disabled veteran-owned small business single-award IDC with Naval Facilities Engineering Command (effective June 1, 2025 through May 31, 2030) for cathodic protection services and removal of non-beneficial heat control systems, which has generated one delivery order to date; a $131,747 total small business single-award IDC with the Army Installation Management Command Northeast Region (February 15, 2024 through February 14, 2027) for storage tank testing, calibration, and repair at Fort Drum supporting three task orders; a $261,736 total small business single-award IDC with Veterans Integrated Service Network 2 (June 3, 2022 through January 31, 2027) for above-ground and underground storage tank maintenance and repair at Hudson Valley VA Healthcare System supporting four task orders; and a $523,472 total small business single-award IDC also with Veterans Integrated Service Network 2 (February 9, 2022 through January 31, 2027) for tank and monitoring system services. The company also holds a $475,000 Federal Supply Schedule contract awarded May 18, 2026 under the Multiple Award Schedule through May 17, 2031, enabling direct ordering by federal agencies. Its largest parent vehicles by task-order count include Naval Facilities Engineering Command's N4008521D0015 (23 task orders, $2.1 million combined value), N4008515D9607 (14 task orders, $1.2 million), and N4008515D8726 (9 task orders, $1 million) — all supporting routine storage tank inspection, maintenance, and repair work at Naval Station Newport and related Navy installations. Delivery orders under these vehicles range from routine maintenance tasks under $10,000 to multi-year option periods in the $300,000 range.

Mass Tank Inspection Services subcontracts minimally — only two sub-awards appear in the recent record — both placed under Emcor Government Services, Inc. as the prime contractor. These awards cover annual fuel tank testing and inspection services at the Federal Bureau of Investigation Central Records Complex in Winchester, Virginia (base year and option year 1, awarded October 2024 and October 2025 respectively) under Emcor's facility engineering and operations contract 47PN0324F0009. The company's 171 awards over the past thirteen years, distributed across 37 distinct customer agencies, reflect sustained incumbency in Navy and VA tank infrastructure support, with the majority of work concentrated at a handful of recurring Navy facilities in Newport, Rhode Island and Groton, Connecticut, and VA healthcare system locations across the Northeast and Mid-Atlantic regions.

Tank Fabrication and Inspection, Cathodic Protection, Environmental Engineering