Special Notice: VETERANS AFFAIRS, DEPARTMENT OF intends to award a sole source contract to ChemDAQ, Inc. for commercial maintenance services on Steri-Trac sensors on behalf of the St. Louis VA Health Care System. The service is used to provide maintenance on Steri-Trac sensors, which are used in medical facilities to monitor and ensure the sterility of equipment. This notice is not a request for competitive quotations. Written responses must be submitted by April 19, 2018, to determine if competition exists. Contact information: Paul Dixon, paul.dixon@va.gov, 913-946-1980.