This opportunity involves maintenance services for incinerator plant equipment, calibration of weight scales, operation of sewage treatment facilities, sewer lines, paint wastewater treatment, and cleaning/disinfection of potable water tanks. The work will be performed at various locations within U.S. Commander Fleet Activities Yokosuka. A sole-source contract modification was awarded to NIKKEN SOGYO CO, LTD under FAR 6.302-2. No specific budget amount or submission timeline is provided in the description. The justification for the sole-source award is being made publicly available within 30 days of the contract award.