NASA/Langley Research Center, Mail Stop 144, Industry Assistance Office, Hampton, VA 23681-0001

D -- WESTLAW ELECTRONIC SERVICE SOL 1-111-SB-1004 DUE 111799 POC Lauretta E. Cole, Purchasing Agent, Phone (757)-864-2443, Fax (757) 864-9775, Email L.E.COLE@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#1-111-SB-1004. E-MAIL: Lauretta E. Cole, L.E.COLE@larc.nasa.gov. This is a modification to the synopsis entitled WESTLAW ELECTRONIC SERVICE, 1-111-SB-1004 which was posted on 11/4/99. You are notified that the following changes are made: THE AUTHORITY IS CHANGED TO READ: ",...PER 10 U.S.C. 2304(C)(1), ONLY A LIMITED NUMBER OF RESPONSIBLE SOURCES AND NO OTHER SERVICES WILL SATISFY AGENCY REQUIREMENTS." THE SERVICES REQUIRED BY THIS AGENCY ARE AVAILABLE FROM A LIMITED NUMBER OF RESPONSIBLE SOURCES DUE TO THIS AGENCYS' UNIQUE REQUIREMENTS. [DESCRIPTION OF MODIFICATIONS]. The due date for receipt of quotes is not extended. Documents related to this procurement are available over the Internet and are in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/LaRC Business Opportunities home page is http://procurement.nasa.gov/EPS/LaRC/class.html Offerors are responsible for monitoring this site for the release of the solicitation and any amendments. Potential offerors are responsible for downloading their own copy of the solicitation and amendments (if any). Posted 11/08/99 (D-SN398983). (0312)

Loren Data Corp. http://www.ld.com (SYN# 0035 19991110\D-0013.SOL)