This federal contract award was issued by the Department of the Interior U.S. Geological Survey Office of Acquisitions and Grants to Hach Company, doing business as ELE International, a manufacturer of analytical instruments and reagents used for water quality testing. The $26,096.70 firm-fixed price purchase order is for the SUNA V2 nitrate sensor, which will support a "super site of continuous measurement in the Willamette River at Portland, OR." The original contract opportunity was a special notice seeking a sole source award, citing the use of a special procurement authority. Hach Company is the prime contractor for this award, and has received over $5 million in prior federal contract work, including IDIQ contracts with the U.S. Army, Navy, and U.S. Geological Survey for the provision of water monitoring equipment, sensors, and maintenance services. There was no small business set-aside used for this specific award.