This is a amendment to the synopsis/solicitation entitled Structural Ironworker,Boilermaker, and Pipefitter, NNC11ZCH013Q which was posted on April 25, 2011. You arenotified that the following changes are made: NAICS Code changed 811310.The due date for responses is not extended.Documents related to this procurement will be available over the Internet. Thesedocuments will reside on a World Wide Web (WWW) server, which may be accessed using a WWWbrowser application. The Internet site, or URL, for the NASA/GRC Business Opportunitieshome page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=22 Offerors are responsible for monitoring this site for the release of the solicitation andany amendments. Potential offerors are responsible for downloading their own copy ofthe solicitation and amendments (if any).See Amendent 001.

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