U.S. Nuclear Regulatory Commission, Division of Contracts and Property Management, Mail Stop T-7-I-2, Washington, D.C. 20555

B -- GARNER VALLEY DOWNHOLE SEISMOGRAPHIC ARRAY: OPERATION AND ANALYSIS OF THE RECORDED DATA SOL RS-RES-00-038 DUE 112399 POC Mary Mace, Contracting Officer 301/415-7314/Amy Siller, Contract Specialist 301/415-6747 The Nuclear Regulatory Commission (NRC) intends to negotiate a contract on a sole source basis with the University of California at Santa Barbara (UCSB) to (a) record strong ground motion data from a shallow soil column site in a seismically active area; (b) determine the attenuation characteristics of the record data and compare these characteristics with those assumed to predict the strong ground motion at the Garner Valley site; and (c) assess the validity of the two competing hypotheses for the high frequency shape of earthquake ground motion spectra using the recorded data. The proposed period of performance is a 3-year base contract with 2 1-year options. This action is being pursued on a sole source basis to UCSB for two reasons. First, this is a continuation of work completed under two previous NRC grants and two previous NRC contracts leading up to this effort. Second, UCSB has unique access to the Garner Valley site which was specifically chosen because it was in a seismically active area so that the site would be shaken by a number of moderately sized earthquakes. In addition, the site has a soil column that is representative of a typical soil column found under a central or eastern U.S. nuclear power plant. Standard Industrial Classification code 8999 applies. This is a notice of intent to contract only. A solicitation document does not exist. See Note 26.***** Posted 11/08/99 (W-SN399119). (0312)

Loren Data Corp. http://www.ld.com (SYN# 0010 19991110\B-0001.SOL)