| | KANTO KOSAN CO.,LTD. | PUMP OUT/CLEAN VESSEL BILGES AND OIL/WATER SEPARATORS, U.S. ARMY LANDING CRAFT UTILITIES (LCUS), OKINAWA JAPAN | BPA | $250,000 | DEPT OF THE AIR FORCE | DEPT OF THE ARMY | — | 562998All Other Miscellaneous Waste Management Services | Z1PDMAINTENANCE OF WASTE TREATMENT AND STORAGE FACILITIES | Jan 8, 2021 | Jan 8, 2021 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $819,237 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562998All Other Miscellaneous Waste Management Services | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Aug 13, 2020 | Aug 13, 2020 | — |
| | KANTO KOSAN CO.,LTD. | OWW DISPOSAL SERVICE | IDC | $69,528,256 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F103ENVIRONMENTAL SYSTEMS PROTECTION- WATER QUALITY SUPPORT | Jul 17, 2020 | Jul 17, 2020 | Jul 16, 2021 |
| | KANTO KOSAN CO.,LTD. | BASIC AWARD FOR CHT SERVICE AT SASEBO, JAPAN | IDC | $14,809,466 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | S222HOUSEKEEPING- WASTE TREATMENT/STORAGE | Feb 13, 2020 | Feb 13, 2020 | Mar 31, 2025 |
| | KANTO KOSAN CO.,LTD. | BASIC BUNKERING SERVICE | IDC | $4,343,700 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 488390Other Support Activities for Water Transportation | V124TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MARINE CHARTER | Jan 29, 2020 | Feb 1, 2020 | Nov 30, 2022 |
| | KANTO KOSAN CO.,LTD. | — | IDC | $244,100 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 488390Other Support Activities for Water Transportation | V124TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MARINE CHARTER | Nov 29, 2019 | Dec 1, 2019 | — |
| | KANTO KOSAN CO.,LTD. | SLOP OIL DISPOSAL SERVICES | IDC | $221,000 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F112ENVIRONMENTAL SYSTEMS PROTECTION- OIL SPILL RESPONSE | Sep 30, 2019 | Sep 30, 2019 | Sep 28, 2021 |
| | KANTO KOSAN CO.,LTD. | — | IDC | $2,650,614 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 488390Other Support Activities for Water Transportation | V124TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MARINE CHARTER | Nov 28, 2016 | Nov 28, 2016 | Nov 30, 2019 |
| | KANTO KOSAN CO.,LTD. | — | IDC | $26,261,674 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | S222HOUSEKEEPING- WASTE TREATMENT/STORAGE | Mar 26, 2015 | Apr 1, 2015 | Mar 31, 2020 |
| | KANTO KOSAN CO.,LTD. | IGF::OT::IGF COLLECT, SEPARATE, AND PURIFY OILY WASTE WATER FROM AIRCRAFT CARRIERS | IDC | $3,901,808 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Feb 4, 2015 | Mar 1, 2015 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $179,569 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F112ENVIRONMENTAL SYSTEMS PROTECTION- OIL SPILL RESPONSE | Dec 24, 2014 | Jan 1, 2015 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $265,850 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Oct 20, 2014 | Oct 21, 2014 | Sep 30, 2019 |
| | KANTO KOSAN CO.,LTD. | — | BOA | $0 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 336611Ship Building and Repairing | J999NON-NUCLEAR SHIP REPAIR (WEST) | Oct 2, 2013 | Oct 2, 2013 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $1,993,604 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 488390Other Support Activities for Water Transportation | V124TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MARINE CHARTER | Sep 30, 2013 | Oct 1, 2013 | Sep 30, 2016 |
| | KANTO KOSAN CO.,LTD. | — | IDC | $6,408,708 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562998All Other Miscellaneous Waste Management Services | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Jun 3, 2013 | Jun 1, 2013 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $4,348,922 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562219Other Nonhazardous Waste Treatment and Disposal | S222HOUSEKEEPING- WASTE TREATMENT/STORAGE | May 3, 2011 | May 3, 2011 | May 10, 2013 |
| | KANTO KOSAN CO.,LTD. | BUNKERING, DE-BUNKERING SERVICES | IDC | $0 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 488390Other Support Activities for Water Transportation | V124TRANSPORTATION/TRAVEL/RELOCATION- TRANSPORTATION: MARINE CHARTER | Feb 16, 2011 | Mar 1, 2011 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $712,864 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562119Other Waste Collection | S222HOUSEKEEPING- WASTE TREATMENT/STORAGE | Sep 9, 2010 | Sep 9, 2010 | May 9, 2011 |
| | KANTO KOSAN CO.,LTD. | — | IDC | $22,884,483 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562219Other Nonhazardous Waste Treatment and Disposal | S222HOUSEKEEPING- WASTE TREATMENT/STORAGE | Sep 28, 2009 | Sep 29, 2009 | — |
| | KANTO KOSAN CO.,LTD. | OILY WASTE WATER TREATMENT | IDC | $642,771 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562211Hazardous Waste Treatment and Disposal | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Aug 20, 2009 | Oct 21, 2009 | Oct 20, 2014 |
| | KANTO KOSAN CO.,LTD. | AGREEMENT OF BOAT REPAIR FOR KANTOHKOSAN CO., LTD | IDC | $0 | DEPT OF THE NAVY | — | — | 336611Ship Building and Repairing | J999NON-NUCLEAR SHIP REPAIR (WEST) | Jul 26, 2009 | Jul 27, 2009 | — |
| | KANTO KOSAN CO.,LTD. | ON-SITE TREATMENT BARGE FOR CHT | IDC | $484,400 | DEPT OF THE NAVY | — | — | 562998All Other Miscellaneous Waste Management Services | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Apr 13, 2009 | Apr 13, 2009 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $3,885,759 | DEPT OF THE NAVY | DEPT OF THE NAVY | — | 562998All Other Miscellaneous Waste Management Services | F108ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION | Sep 10, 2008 | Sep 10, 2008 | — |
| | KANTO KOSAN CO.,LTD. | — | IDC | $0 | DEPT OF THE NAVY | — | — | 336611Ship Building and Repairing | J999NON-NUCLEAR SHIP REPAIR (WEST) | May 19, 2008 | Oct 1, 2007 | — |
| | KANTO KOSAN CO.,LTD. | MSRA/ABR AGREEMENT | IDC | $0 | DEPT OF THE NAVY | — | — | 336611Ship Building and Repairing | J999NON-NUCLEAR SHIP REPAIR (WEST) | Oct 1, 2007 | Oct 1, 2007 | Jan 31, 2009 |