U.S. Geological Survey, Branch Of Acquisition and Federal Assistance, Box 25046, Denver Federal Center, Denver, CO 80225-0046

Z -- REPLACE EXISTING UNINTERRUPTED POWER SOURCE (UPS) SOL 99CRSS0011 DUE 081399 POC Alexandria (Sandie) Williamson, (303) 236-5900, ext. 332 E-MAIL: USGS, CR, Acquisition & Federal Assistance, slwillia@usgs.gov. This notice amends the date of the Pre-Bid Conference published in the Commerce Business Daily announcement posted on June 16, 1999, for Solicitation No. 99CRSS0011 -- to replace the existing uninterrupted power source (UPS) at the EROS Data Center, Sioux Falls, South Dakota. The Pre-Bid Conference date is changed from July 13, 1999 to July 20, 1999, at 9:00am at the Karl Mundt Federal Building, EROS Data Center, Sioux Falls, South Dakota 57198. End of changes, no other changes to the original CBD are made at this time. Posted 07/01/99 (W-SN349694). (0182)

Loren Data Corp. http://www.ld.com (SYN# 0184 19990706\Z-0016.SOL)