Kanagawa Hoken Jigyousha Co.,Ltd.

Kanagawa Hoken Jigyousha Co., Ltd., a Japan-based environmental and facility support services provider, operates as a prime contractor exclusively serving the Navy Installations Command and Naval Facilities Engineering Command for integrated solid waste management, septic tank maintenance, and facility environmental compliance at U.S. military installations throughout Japan. The company is a for-profit Japanese corporate entity registered in SAM since March 2007, competing under full-and-open procurement with no small business set-aside designations due to the overseas nature of the work.

The vendor's capability portfolio centers on waste collection, segregation, recycling, and disposal services, along with preventive maintenance of sewage and septic tank systems at naval facilities in the Indo-Pacific region. Representative prime work includes a $520,852.71 delivery order from Navy Installations Command (NAVFAC) for integrated solid waste management at the Ikego Housing Area (awarded June 2024, completion June 2025), a $659,368.53 firm fixed-price delivery order for integrated solid waste management services at Yokohama City Area in Commander Fleet Activities Yokosuka (awarded May 2023, completion June 2024), and a $39,882.61 delivery order for preventive maintenance and service orders for septic tank systems at CFAY Yokohama City Area (awarded November 2025, completion November 2026). The vendor holds three active single-award indefinite delivery contracts: one valued at $10,454,443.52 through June 2028 for integrated solid waste management at the Ikego area, a second valued at $863,392.08 (awarded March 2026) for integrated solid waste management at Yokohama area through March 2031, and a third valued at $233,304.49 (awarded December 2024) for septic tank preventive maintenance at CFAY through November 2029.

Customer concentration is absolute: Navy Installations Command and Naval Facilities Engineering Command account for 99% of awards (104 of 105 total awards) and 98% of combined potential value ($54.3 million of $55.5 million). The two rankings are nearly identical — both customers dominate both volume and dollars — with Naval Facilities Engineering Command placing slightly more orders (61 awards, $29.1 million) than Navy Installations Command (43 awards, $25.2 million). The vendor's five largest parent indefinite delivery contracts drove task-order activity, with IDC N4008408D0418 generating 16 task orders valued at $10 million combined, IDC N4008413D0413 generating 21 task orders valued at $3 million, and IDC N4008418D0410 generating 10 task orders valued at $4.7 million. Work is performed exclusively in Japan across multiple installations including Naval Air Facility Atsugi, Commander Fleet Activities Yokosuka, and Ikego Housing Area.

Activity has been stable but tightening. The vendor received five awards in 2022, six in 2023, seven in 2024, five in 2025, and two through April 2026, reflecting annual task-order placement against standing IDCs rather than new competitive wins. The recompete cliff is minimal — only two awards (combined potential value $43 thousand) face completion within the next twenty-four months, meaning most of the vendor's contract value remains protected through option periods and contract expirations extending to 2031. The vendor competes exclusively as a prime (100% of awards); no subcontract footprint is present in the source. Concentration by work type is extremely narrow: 92 of 105 awards fall under NAICS 4253 (Solid Waste Collection), with the remaining 13 distributed among automotive repair, water systems, and sewage treatment maintenance, reflecting the specialized nature of overseas military facility support.