CUSTOM FABRICATED RUBBER MARINE FENDERS AND MOUNTING HARDWARE. DS IMPORTS LLC $887,775 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 326291 Rubber Product Manufacturing for Mechanical Use 9320 RUBBER FABRICATED MATERIALS Jun 1, 2026 Jun 3, 2026 Sep 2, 2026
DIVER TO INSPECT SEAWAY GUARDIAN, TRIDENT AND AIR CURTAINS HUNT UNDERWATER SPECIALTIES, LLC $13,199 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 561990 All Other Support Services Z1KA MAINTENANCE OF DAMS May 21, 2026 May 27, 2026 May 28, 2026
REBUILD 2 CRITICAL GEARBOXES THAT OPEN THE MITER GATES TIMKEN GEARS & SERVICES INC $505,912 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 333612 Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing J030 MAINT/REPAIR/REBUILD OF EQUIPMENT- MECHANICAL POWER TRANSMISSION EQUIPMENT May 20, 2026 May 12, 2026 May 20, 2027
SEAWAY VISITOR CENTER EXHIBIT MAINTENANCE HADLEY EXHIBITS, INC. $103,914 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 561990 All Other Support Services R799 SUPPORT- MANAGEMENT: OTHER May 20, 2026 May 18, 2026 May 17, 2028
PURCHASE OF AUTOCAD LICENSE SUBSCRIPTION AND PRODUCT SUPPORT. REDHAWK IT SOLUTIONS, LLC $18,413 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 541519 Other Computer Related Services DA10 IT AND TELECOM - BUSINESS APPLICATION/APPLICATION DEVELOPMENT SOFTWARE AS A SERVICE May 18, 2026 May 18, 2026 May 17, 2027
MILTON CATERPILLAR ENGINE SERVICE ON SEAWAY GUARDIAN TUG BOAT SOUTHWORTH-MILTON, INC. $14,750 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance J020 MAINT/REPAIR/REBUILD OF EQUIPMENT- SHIP AND MARINE EQUIPMENT Apr 28, 2026 May 4, 2026 May 15, 2026
ICE BUOY LANTERN BATTERIES FOR STEEL ALL-SEASON ICE BUOYS DEPLOYED IN ST. LAWRENCE RIVER FOR AS AIDS TO NAVIGATION FOR SAFETY OF MARINE TRAFFIC. MATHEWS ASSOCIATES INC $38,843 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 335910 Battery Manufacturing 6135 BATTERIES, NONRECHARGEABLE Mar 19, 2026 Mar 19, 2026 Jul 9, 2026
PROVIDE BUOY MOORING CHAIN ANCHOR MARINE & INDUSTRIAL SUPPLY INC $28,100 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 332111 Iron and Steel Forging 4010 CHAIN AND WIRE ROPE Mar 18, 2026 Mar 18, 2026 May 4, 2026
COMPREHENSIVE SUPPORT SERVICES FOR A GOVERNMENT-OWNED TRADESHOW EXHIBIT BOOTH. SERVICES INCLUDE STORAGE, TRANSPORTATION, SHOW COORDINATION, INSTALLATION AND DISMANTLING, CONDITION REPORTING, AND REPAIRS OR UPGRADES. THE PRIMARY OBJECTIVE IS TO ENSURE HENRY DIGITAL MARKETING, LLC $110,348 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 561920 Convention and Trade Show Organizers R799 SUPPORT- MANAGEMENT: OTHER Mar 18, 2026 Mar 20, 2026 Mar 19, 2029
HEARING AND FIT TESTING FOR EMPLOYEES. SYBEST LLC $8,000 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 621340 Offices of Physical, Occupational and Speech Therapists, and Audiologists Q403 MEDICAL- EVALUATION/SCREENING Mar 17, 2026 Mar 23, 2026 May 18, 2026
COMMERCIAL APPRAISAL SERVICES AT THE GLS ADMINISTRATION BUILDING VARLEY APPRAISAL GROUP, INC. $2,900 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 531320 Offices of Real Estate Appraisers R411 SUPPORT- PROFESSIONAL: REAL PROPERTY APPRAISALS Mar 11, 2026 Mar 16, 2026 May 15, 2026
TO OBTAIN A NEW CONTRACT FOR UNIFORMS FOR EMPLOYEES ON A RENT AND CLEAN BASIS. SMART PROCUREMENT SOLUTIONS INC $187,741 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 812332 Industrial Launderers S209 HOUSEKEEPING- LAUNDRY/DRYCLEANING Feb 26, 2026 Mar 23, 2026 Mar 22, 2030
EMERGENCY MINI-EXCAVATOR - 1 MONTH RENTAL. EQUIPMENT RENTALS INC $5,150 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 532412 Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing W041 LEASE OR RENTAL OF EQUIPMENT- REFRIGERATION, AIR CONDITIONING, AND AIR CIRCULATING EQUIPMENT Feb 13, 2026 Feb 13, 2026 Mar 13, 2026
MAINTENANCE AND SUPPORT PROGRAM FOR EPAC INVENTORY AND MAINTENANCE SOFTWARE. MPULSE SOFTWARE, INC. $6,541 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 541519 Other Computer Related Services DA01 IT AND TELECOM - BUSINESS APPLICATION/APPLICATION DEVELOPMENT SUPPORT SERVICES (LABOR) Jan 29, 2026 Jan 29, 2026 Dec 31, 2026
SUPPLY, INSTALL, AND TEST OEM INGERSOLL RAND INPUT MODULE AND CONTROL BOARD FOR THE R90N AIR COMPRESSOR INGERSOLL-RAND INDUSTRIAL U.S., INC. $27,082 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance J049 MAINT/REPAIR/REBUILD OF EQUIPMENT- MAINTENANCE AND REPAIR SHOP EQUIPMENT Jan 29, 2026 Jan 30, 2026 Mar 1, 2026
LIFERAFT SERVICES/INSPECTIONS FOR GLS MARINE VESSELS LIFERAFT SERVICES LLC $8,577 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance J025 MAINT/REPAIR/REBUILD OF EQUIPMENT- VEHICULAR EQUIPMENT COMPONENTS Jan 23, 2026 Jan 28, 2026 Mar 13, 2026
INGERSOLL RAND AIR COMPRESSOR SEPARATOR ELEMENTS AND COOLANT OIL CAPP LLC $50,180 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 332510 Hardware Manufacturing 4330 CENTRIFUGALS, SEPARATORS, AND PRESSURE AND VACUUM FILTERS Jan 8, 2026 Jan 9, 2026 Feb 9, 2026
SERVICES FOR ETHERNET VIRTUAL PRIVATE LINE (EVPL) SERVICE, VOICE PRIMARY RATE INTERFACE (PRI), AND DARK FIBER INFRASTRUCTURE AND MAINTENANCE SERVICES TO VARIOUS GREAT LAKES ST. LAWRENCE SEAWAY DEVELOPMENT CORPORATION (GLS) FACILITIES. CHARTER COMMUNICATIONS OPERATING LLC $37,509 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 517111 Wired Telecommunications Carriers DG01 IT AND TELECOM - NETWORK SUPPORT SERVICES (LABOR) Dec 22, 2025 Jan 1, 2026 Dec 31, 2026
SPRAY FOAM SERVICES FOR INSTALLATION OF STOPLOGS, USED TO SEAL STOPLOGS FOR WINTER WORK DMT FOAM, INC $14,000 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 238310 Drywall and Insulation Contractors Z1KA MAINTENANCE OF DAMS Dec 19, 2025 Jan 5, 2026 Jan 31, 2026
DIVER TO INSPECT AND CLEAN SILLS AT BOTH LOCKS SO THAT STOP LOGS CAN BE INSTALLED FOR WINTER WORK. HUNT UNDERWATER SPECIALTIES, LLC $7,100 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 561990 All Other Support Services Z1KA MAINTENANCE OF DAMS Dec 15, 2025 Jan 5, 2026 Jan 31, 2026
2025/2026 500 TONS OF BULK ROCK SALT COMPASS MINERALS AMERICA INC. $36,748 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing 6810 CHEMICALS Nov 21, 2025 Nov 13, 2025 Mar 31, 2026
EMERGENCY REPAIRS OF A POTABLE WATER SUPPLY LINE THAT FEEDS THE ADMINISTRATION BUILDING. LAVACKS CUSTOM BUILDERS, INC. $44,978 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 237110 Water and Sewer Line and Related Structures Construction Z1NE MAINTENANCE OF WATER SUPPLY FACILITIES Nov 20, 2025 Nov 19, 2025 Nov 26, 2025
EMERGENCY GENERATORS SERVICE AT GLS FACILITIES IN MASSENA, NY. STERILECO LLC $152,000 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance J061 MAINT/REPAIR/REBUILD OF EQUIPMENT- ELECTRIC WIRE AND POWER DISTRIBUTION EQUIPMENT Nov 18, 2025 Nov 17, 2025 Nov 16, 2030
REIMBURSE SLSMC FOR 2025-2026 WEB HOSTING INITATIVE SHARED SERVICES. MISCELLANEOUS FOREIGN AWARDEES $133,500 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 541611 Administrative Management and General Management Consulting Services R799 SUPPORT- MANAGEMENT: OTHER Sep 30, 2025 Sep 30, 2025 Mar 31, 2026
HAZARDOUS WASTE REMOVAL CLEAN HARBORS ENVIRONMENTAL SERVICES INC $10,771 GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION GREAT LAKES ST LAWRENCE SEAWAY DEVELOPMENT CORPORATION — 562112 Hazardous Waste Collection F108 ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION Sep 29, 2025 Nov 20, 2024 Nov 4, 2025