MAINTENANCE SERVICE OF INCINERATOR PLANT EQUIPMENT AND SYSTEMS, CALIBRATION WEIGHT SCALES, OPERATION AND MAINTENANCE OF SEWAGE TREATMENT FACILITIES AND SEWER LINES, PAINT WASTEWATER TREATMENT SYSTEM, CLEANING AND DISINFECTION OF POTABLE WATER TANKS AT VARIOUS LOCATIONS IN U.S. COMMANDER FLEET ACTIVITIES YOKOSUKA. Modification P00013 to Contract N4008420D0402 was awarded on a sole source basis to NIKKEN SOGYO CO, LTD pursuant to Federal Acquisition Regulation (FAR) 6.302-2. This justification is being made publicly available within 30 days of the contract award in accordance with FAR 6.305(b).